A method for adjusting ventilation of dirty air in a garbage laundry room based on over-standard risk

Abstract

This invention discloses a method for regulating the ventilation volume of polluted air in waste and linen storage rooms based on the risk of exceeding standards, relating to the field of building ventilation and indoor air quality control technology. The method includes: collecting data on the concentration of gaseous target pollutants, ventilation volume, exhaust valve position, indoor pressure, and operational feedback from the main air handling unit to form a synchronized operation sequence; dividing the flow restriction period and generating a pollution load to be released; generating candidate ventilation volumes based on the load release relationship formed by the ventilation recovery test after flow restriction to determine the exhaust risk concentration; screening executable ventilation volumes by combining the exhaust outlet concentration limit and indoor pressure; adjusting the exhaust valve step by step; and activating the auxiliary air handling unit when no executable ventilation volume is available. By assessing the risk of concentrated pollutant release during ventilation recovery before valve operation, the probability of exhaust concentration exceeding limits is reduced, and indoor pressure is maintained within the design range.

Description

Technical Field

[0001] This invention relates to the field of building ventilation and indoor air quality control technology, specifically a method for adjusting the ventilation volume of polluted air in garbage and clothing rooms based on the risk of exceeding standards. Background Technology

[0002] In medical institutions, elderly care facilities, and other buildings with temporary logistics storage areas, temporary garbage storage rooms and temporary contaminated linen storage rooms are typically set up. Mechanical ventilation systems are used to exhaust odorous and polluted air generated during the storage and removal of garbage and contaminated fabrics. The term "garbage and linen room" in this application refers to at least one of a temporary garbage storage room and a temporary contaminated linen storage room, or a combination of rooms connected to the same mechanical ventilation system. Gaseous target pollutants refer to gaseous pollutants generated during the storage of garbage or contaminated linen, which can be continuously detected by gas concentration sensors and have corresponding exhaust vent concentration limits, air handling performance calibration records, and load release relationships. The mechanical ventilation system includes a polluted air collection port, an exhaust fan, an exhaust regulating valve, a main air handling unit, an auxiliary air handling unit connected in series downstream of the main air handling unit, and an exhaust vent. The main air handling unit handles routine processing, while the auxiliary air handling unit is activated when there is no available ventilation range. Ventilation volume simultaneously affects indoor negative pressure, polluted air delivery speed, air handling residence time, and the concentration of gaseous target pollutants at the exhaust vent.

[0003] Existing waste and linen storage facilities typically employ fixed ventilation volumes, timed air exchanges, or tiered control methods based on indoor pollutant concentrations. When pollutant concentrations rise, the exhaust volume is increased, and it returns to the normal level when the concentration decreases. Some control methods also adjust the exhaust regulating valve based on indoor pressure or the operating status of the main air handling unit, or activate the auxiliary air handling unit when the concentration at the exhaust outlet exceeds a set threshold.

[0004] However, pollutants continuously released from garbage and contaminated clothing will not be completely discharged synchronously during flow restriction periods. The portion not removed by the main air handling unit may remain in the garbage and clothing room, exhaust ducts, or treatment media. The concentration detected at the exhaust vent under flow restriction conditions only reflects the current exhaust status and does not reflect the total amount of pollutants that have not yet been discharged. When ventilation is restored, the increased ventilation volume may cause this portion of pollutants to concentrate and enter the exhaust vent within a short period, forming a peak exhaust concentration during the restoration phase. Directly adjusting the exhaust regulating valve based solely on the instantaneous concentration before restoration can easily lead to short-term exceedance risks due to control lag.

[0005] Furthermore, existing control methods typically assess exhaust concentration and indoor pressure separately, failing to establish a quality balance based on the amount of pollutants entering, exiting, and actually removed during the flow restriction period. They also lack a relationship between the cumulative pollution load and the release of pollutants at different recovery ventilation rates, making it difficult to evaluate the risk of exceeding limits for each candidate ventilation rate before the exhaust regulating valve activates. Directly restoring to normal ventilation may cause concentrated pollutant discharge, while maintaining a flow restriction state for an extended period could lead to continued accumulation of indoor pollutants or cause indoor pressure to deviate from the design range. Therefore, a ventilation rate adjustment method is needed to constrain the recovery ventilation process of polluted air in the waste and linen room based on the pollution load to be released during the flow restriction period. Summary of the Invention

[0006] Based on the shortcomings of the prior art described above, the purpose of this invention is to provide a method for adjusting the ventilation volume of polluted air in garbage and clothing rooms based on the risk of exceeding standards, so as to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a method for adjusting the ventilation volume of polluted air in a garbage and bedding room based on the risk of exceeding standards, comprising: The concentration and ventilation of gaseous target pollutants at the stale air collection point, main air handling unit inlet and exhaust outlet of the garbage and clothing room are collected, along with the exhaust regulating valve position, indoor pressure and main air handling unit operation feedback, to form a synchronous operation sequence. A normal ventilation baseline is established based on the opening degree of the exhaust regulating valve and the actual ventilation volume under normal ventilation conditions. The flow restriction time period is divided from the synchronous operation sequence according to the changes in the current exhaust regulating valve opening degree and the actual ventilation volume relative to the normal ventilation baseline. Using the distance from the polluted air collection point to the exhaust outlet as the mass balance line, the pollution load to be released is generated based on the amount of pollutants entering, the amount of pollutants being discharged, and the verified amount of pollutants removed during the restricted flow period. The calibration ventilation level, which is higher than the current ventilation level but not higher than the normal ventilation level in the normal ventilation benchmark, is selected from the ventilation regulating valve opening and ventilation volume calibration records as the candidate ventilation volume. Based on the pollution load to be released, the load release relationship formed by the ventilation recovery test after flow restriction, the lowest stable removal ratio obtained by the main air handling unit under the calibration conditions matching the candidate ventilation volume, and the periodic exhaust volume, the exhaust risk judgment concentration is generated. The concentration of exhaust risk assessment is compared with the exhaust outlet concentration limit of gaseous target pollutants to form the risk status of exceeding the standard for candidate ventilation volume; Based on the risk status of exceeding the limit of candidate ventilation volume and the ventilation volume and pressure verification records formed during the equipment commissioning phase, calibrated candidate ventilation volumes that have passed both risk verification and pressure verification are selected to form an executable ventilation volume range. When there is an executable ventilation range, the exhaust regulating valve is adjusted step by step according to the calibrated candidate ventilation range within the range; when there is no executable ventilation range, the exhaust regulating valve opening is maintained at the qualified pressure and the auxiliary air handling unit set in series downstream of the main air handling unit is started.

[0008] The present invention is further configured such that forming the synchronous running sequence includes: Periodic sampling is performed using pollutant sensors and flow sensors at the sampling sections of the turbid air collection port, the main air handling unit inlet, and the exhaust port of the garbage and clothing room to generate collection port sampling records, main air handling unit records, and exhaust port sampling records. Under a unified control clock, the system collects feedback on the position of the exhaust regulating valve, indoor pressure, start / stop of the main air handling unit and auxiliary air handling unit, treatment intensity, and treatment flow rate to generate equipment operation records. Based on the pre-calibrated response delay correction of the acquisition link, the time stamps of the collection port sampling record, main air handling record, exhaust port sampling record and pressure feedback are retained, and the control event times of exhaust regulating valve position feedback, main air handling unit operation feedback and auxiliary air handling unit operation feedback are retained. According to the corrected timestamps and control event times, the collection port sampling records, main air handling records, exhaust port sampling records and equipment operation records are collected and combined into synchronous data units within the same ventilation volume adjustment cycle, and a synchronous operation sequence is generated in chronological order.

[0009] The present invention is further configured such that, in establishing a normal ventilation baseline based on the opening of the exhaust regulating valve and the actual ventilation volume under normal ventilation conditions, and dividing the flow restriction time period from the synchronous operation sequence according to the changes in the current exhaust regulating valve opening and the actual ventilation volume relative to the normal ventilation baseline, the following steps are taken: Select the opening degree of the exhaust regulating valve and the actual ventilation volume from the continuous operation records marked as normal ventilation conditions during the equipment commissioning phase, and generate a normal ventilation baseline record containing normal ventilation opening degree and normal ventilation volume. A flow restriction start record is generated when the opening of the exhaust regulating valve is lower than the normal ventilation opening and the actual ventilation volume is lower than the normal ventilation volume after the exhaust regulating valve has completed its operation. Starting from the initial record of flow restriction, a flow restriction operation subsequence is generated by continuing synchronous data units where the opening of the exhaust regulating valve is lower than the normal ventilation opening. When the opening of the exhaust regulating valve and the actual ventilation volume return to the range defined by the normal ventilation reference record, a flow restriction termination boundary is generated. If they have not yet returned to normal, the current end of the synchronous operation sequence is used as the temporary termination boundary to form a flow restriction period.

[0010] The present invention is further configured such that the formation of the pollutant inflow and pollutant outflow during the flow restriction period includes: According to the type of gaseous target pollutant and the sampling section, the collection port sampling records and exhaust port sampling records in the flow restriction operation subsequence are collected to form a unified concentration and ventilation record under the metering status. The concentration of gaseous target pollutants and the ventilation rate within the same synchronous data unit are combined to generate pollutant mass flow rate records on the inlet and outlet sides. The pollutant mass flow rate records from the inlet and outlet sides are collected separately along the flow restriction period to generate a flow restriction pollutant circulation record that includes the amount of pollutants entering and exiting.

[0011] The present invention is further configured such that the generation of the pollutant load to be released includes: Based on the start-stop feedback, treatment intensity feedback and treatment flow feedback of the main air handling unit, the treatment operation segment is divided. The treatment operation segment whose start-stop status, treatment intensity and treatment flow are all matched with the same air handling performance calibration conditions and whose operation status is continuous is regarded as the effective treatment segment. The lowest stable removal ratio of gaseous target pollutants within the effective treatment zone is selected from the air treatment performance calibration records. The normal ventilation concentration range is formed by the continuous and effective records of the concentration of gaseous target pollutants at the exhaust vent under normal ventilation conditions. The simulation duration is the total time covered from the start of ventilation resumption until the exhaust vent concentration enters the normal ventilation concentration range for two consecutive ventilation volume adjustment cycles. The lowest stable removal ratio is formed by the proportion of pollutants removed during the air treatment performance calibration period that did not return to the exhaust duct within the same verification duration as the simulation duration to the amount of pollutants before treatment. The amount of pollutants flowing through the main air handling unit is determined based on the concentration of gaseous target pollutants at the inlet of the main air handling unit within the effective treatment section and the treatment flow rate. The product of the amount of pollutants flowing through the main air handling unit and the minimum stable removal ratio is used as the amount of pollutants removed, and a pollutant removal record is generated. If a minimum stable removal ratio matching the effective treatment section is not obtained, the amount of pollutants removed in the effective treatment section is recorded as zero. The non-negative residual amount, after deducting the pollutant discharge amount and the verified pollutant removal amount from the pollutant inflow amount, is taken as the pollution load to be released relative to the flow restriction starting point.

[0012] The present invention is further configured such that establishing the load release relationship based on a pre-tested ventilation recovery after flow restriction includes: When the types of gaseous target pollutants remain unchanged, and the start-stop status, treatment intensity, and treatment flow rate of the main air handling unit are consistent with the air handling performance calibration conditions that match the calibration ventilation level, the ventilation test is resumed after flow restriction is implemented according to the test load node and calibration ventilation level. From the moment ventilation is restored, the concentration of gaseous target pollutants and ventilation volume at the turbid air collection port, the inlet of the main air handling unit and the exhaust port are continuously collected, as well as the position of the exhaust regulating valve, indoor pressure and the operation feedback of the main air handling unit, to generate a ventilation restoration test sequence. The continuous exhaust pollutant quantity is formed based on the pollutant inflow and the verified pollutant removal quantity in the ventilation test sequence. The non-negative residual quantity after deducting the continuous exhaust pollutant quantity from the pollutant discharge quantity is arranged according to the ventilation volume adjustment cycle to generate a load release sequence. Based on the types of gaseous target pollutants, test load nodes, and actual ventilation volumes, load release sequences are collected. The highest segment release volume within each ventilation volume adjustment cycle in repeated tests is selected. Then, the highest segment release volume of the same actual ventilation volume and the same ventilation volume adjustment cycle is corrected by performing cumulative maximum value correction along the increasing direction of the test load nodes to establish the load release relationship.

[0013] The present invention is further configured such that the exhaust risk determination concentration for generating candidate ventilation volumes includes: Select a calibration ventilation level that is higher than the current ventilation volume but not higher than the normal ventilation volume from the ventilation regulating valve opening and ventilation volume calibration records to generate a candidate ventilation volume sequence. From the load release relationship that has been monotonically corrected by the test load node, select the test load node that is not less than the current pollution load to be released and is closest to it, and obtain the release upper limit sequence under the candidate ventilation rate. If there is no test load node that meets the conditions, mark it as an uncalibrated candidate quantity. Based on the highest pollutant mass flow rate at the polluted air collection port during the flow restriction period, the lowest stable removal ratio and release upper limit sequence obtained by the main air handling unit under the calibration conditions of matching candidate ventilation volume, a candidate exhaust pollutant mass sequence is generated. Based on the exhaust volume formed by the candidate ventilation volume during the ventilation adjustment cycle, the candidate exhaust pollutant mass sequence is converted into an exhaust concentration sequence, and the highest concentration is selected as the exhaust risk determination concentration.

[0014] The present invention is further configured such that comparing the exhaust risk determination concentration with the exhaust outlet concentration limit of the gaseous target pollutant to generate an exceedance risk record including candidate ventilation volume and exceedance pollutant includes: Based on the exhaust control standards implemented at the exhaust outlets, an exhaust outlet concentration limit record is generated, which includes the gaseous target pollutants, the exhaust outlet concentration limit, and the metering status. The exhaust risk assessment concentration under the candidate ventilation rate is compared with the exhaust outlet concentration limit of the gaseous target pollutant, and pollutants exceeding the standard and those not exceeding the standard are marked respectively. Excessive pollutants are collected according to candidate ventilation volumes, and excess risk records are generated. Candidate ventilation volumes that have completed risk verification and do not contain excessive pollutants are generated into records without excess risk. Uncalibrated candidate volumes are marked as risk unverified.

[0015] The present invention is further configured such that the screening of candidate ventilation volumes that do not pose a risk of exceeding the standard and whose indoor pressure is within the design pressure range, forming an executable ventilation volume range that includes only the calibrated candidate ventilation volumes, includes: Based on the ventilation volume and indoor pressure records covering the allowable operating conditions of the equipment during the equipment commissioning phase, a ventilation volume and pressure verification record containing the pressure variation range is formed. Match candidate ventilation volumes with ventilation and pressure verification records to generate pressure qualified records, pressure limited records, or pressure unverified records. Candidate ventilation volumes with no records of exceeding risk limits and qualified pressure records are classified as executable candidate records; Select the record from the executable candidate records that is higher than the current ventilation volume and has the smallest difference from the current ventilation volume as the starting point of the interval. Then, gather the executable candidate records that are consecutively adjacent from the starting point of the interval along the increasing order of candidate ventilation volume into an executable ventilation volume interval. If there is no executable candidate record, generate a record with no executable interval.

[0016] The present invention is further configured such that controlling the exhaust regulating valve or activating the auxiliary air handling unit connected in series downstream of the main air handling unit according to the executable ventilation range includes: When there is an executable ventilation range, the candidate ventilation volumes within the range that are higher than the current ventilation volume are arranged in ascending order to generate a step-by-step adjustment sequence; The exhaust regulating valve is activated based on the first candidate ventilation volume in the step-by-step adjustment sequence, so that the actual ventilation volume is kept within the calibration range of the candidate ventilation volume for at least one complete ventilation volume adjustment cycle. The concentrations and ventilation volumes of gaseous target pollutants collected from the polluted air collection port, the main air handling unit inlet, and the exhaust port after adjustment, as well as the exhaust regulating valve position, indoor pressure, and main air handling unit operation feedback, are integrated into the synchronous operation sequence to regenerate the pollution load to be released, the record of exceeding the standard risk, and the executable ventilation volume range; if there is a higher candidate ventilation volume, the adjustment is repeated. When there is no executable ventilation range, select the synchronous data unit that is closest in time and whose indoor pressure is within the design pressure range from the synchronous operation sequence, maintain the opening of the exhaust regulating valve in the synchronous data unit, and start the auxiliary air handling unit that is connected in series downstream of the main air handling unit. After the start-stop status, treatment intensity, and treatment flow of the main air handling unit and the auxiliary air handling unit are matched with the same series operation calibration conditions, the gaseous target pollutant concentration and ventilation volume of the polluted air collection port, the inlet of the main air handling unit, and the exhaust port, as well as the exhaust regulating valve position, indoor pressure, operation feedback of the main air handling unit, and operation feedback of the auxiliary air handling unit are connected to the synchronous operation sequence. The total removal capacity of the two air handling units is verified according to the minimum joint removal ratio, and the pollution load to be released, the record of exceeding the standard risk, and the executable ventilation volume range are regenerated.

[0017] This invention provides a method for regulating the ventilation volume of polluted air in a waste and linen storage facility based on the risk of exceeding standards. The method involves collecting data on the concentration and ventilation volume of gaseous target pollutants at the polluted air collection point, the inlet of the main air handling unit, and the exhaust vent, as well as the position of the exhaust regulating valve, indoor pressure, and operational feedback from the main air handling unit, to form a synchronized operation sequence. A normal ventilation baseline is established based on the exhaust regulating valve opening and actual ventilation volume under normal ventilation conditions. A flow restriction period is defined from the synchronized operation sequence based on the changes in the current exhaust regulating valve opening and actual ventilation volume relative to the normal ventilation baseline. Using the polluted air collection point to the exhaust vent as the mass expenditure boundary, a pollution load to be released is generated based on the pollutant inflow, pollutant outflow, and verified pollutant removal during the flow restriction period. A calibration record with a higher ventilation volume than the current ventilation volume but not higher than the normal ventilation volume in the normal ventilation baseline is selected from the exhaust regulating valve opening and ventilation volume calibration records. The air pressure setting is used as a candidate ventilation rate. Based on the pollution load to be released, the load release relationship formed by the ventilation recovery test after flow restriction, the lowest stable removal ratio and periodic exhaust volume obtained by the main air handling unit under the calibration conditions matching the candidate ventilation rate, an exhaust risk assessment concentration is generated. The exhaust risk assessment concentration is compared with the exhaust outlet concentration limit of the gaseous target pollutant to form the exceedance risk status of the candidate ventilation rate. Based on the exceedance risk status of the candidate ventilation rate and the ventilation rate and pressure verification records formed during the equipment commissioning phase, the calibrated candidate ventilation rates that pass both risk verification and pressure verification are screened to form an executable ventilation rate range. When an executable ventilation rate range exists, the exhaust regulating valve is adjusted step by step according to the calibrated candidate ventilation rate within the range. When no executable ventilation rate range exists, the opening of the exhaust regulating valve with qualified pressure is maintained and the auxiliary air handling unit set in series downstream of the main air handling unit is started. The beneficial effects include: 1. Quantification of pollution load under flow restriction: By measuring the amount of pollutants entering, leaving, and being removed after verification during the flow restriction period, the pollution load to be released is formed, reducing the bias caused by judging the accumulation of pollutants solely based on the instantaneous concentration at the exhaust outlet. 2. Risk prediction for resuming ventilation: Using the resuming ventilation test after flow restriction to form a load release relationship that has been monotonically corrected by the test load node, the exhaust risk judgment concentration of the candidate ventilation volume is generated, and the risk of exceeding the standard caused by resuming ventilation is identified before the exhaust regulating valve is activated; 3. Coordinated adjustment of exhaust pressure: Based on the risk of exceeding the standard and the indoor pressure, the feasible ventilation range is selected. The ventilation is adjusted by gradually increasing the ventilation or activating the auxiliary air handling device, so that the ventilation restoration process is simultaneously constrained by the exhaust outlet concentration limit and the design pressure range.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 The flowchart illustrates an exemplary embodiment of the present invention, showing a method for adjusting the ventilation volume of polluted air in a garbage and clothing room based on the risk of exceeding standards. Detailed Implementation

[0020] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0022] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0023] Example 1: A method for adjusting the ventilation volume of polluted air in garbage and bedding rooms based on the risk of exceeding standards, such as... Figure 1 As shown, it includes: The concentration and ventilation of gaseous target pollutants at the stale air collection point, main air handling unit inlet and exhaust outlet of the garbage and clothing room are collected, along with the exhaust regulating valve position, indoor pressure and main air handling unit operation feedback, to form a synchronous operation sequence. A normal ventilation baseline is established based on the opening degree of the exhaust regulating valve and the actual ventilation volume under normal ventilation conditions. The flow restriction time period is divided from the synchronous operation sequence according to the changes in the current exhaust regulating valve opening degree and the actual ventilation volume relative to the normal ventilation baseline. Using the distance from the polluted air collection point to the exhaust outlet as the mass balance line, the pollution load to be released is generated based on the amount of pollutants entering, the amount of pollutants being discharged, and the verified amount of pollutants removed during the restricted flow period. The calibration ventilation level, which is higher than the current ventilation level but not higher than the normal ventilation level in the normal ventilation benchmark, is selected from the ventilation regulating valve opening and ventilation volume calibration records as the candidate ventilation volume. Based on the pollution load to be released, the load release relationship formed by the ventilation recovery test after flow restriction, the lowest stable removal ratio obtained by the main air handling unit under the calibration conditions matching the candidate ventilation volume, and the periodic exhaust volume, the exhaust risk judgment concentration is generated. The concentration of exhaust risk assessment is compared with the exhaust outlet concentration limit of gaseous target pollutants to form the risk status of exceeding the standard for candidate ventilation volume; Based on the risk status of exceeding the limit of candidate ventilation volume and the ventilation volume and pressure verification records formed during the equipment commissioning phase, calibrated candidate ventilation volumes that have passed both risk verification and pressure verification are selected to form an executable ventilation volume range. When there is an executable ventilation range, the exhaust regulating valve is adjusted step by step according to the calibrated candidate ventilation range within the range; when there is no executable ventilation range, the exhaust regulating valve opening is maintained at the qualified pressure and the auxiliary air handling unit set in series downstream of the main air handling unit is started.

[0024] The present invention is further configured such that forming the synchronous running sequence includes: Periodic sampling is performed using pollutant sensors and flow sensors at the sampling sections of the polluted air collection point, the main air handling unit inlet, and the exhaust outlet of the waste linen room. This generates collection point sampling records, main air handling unit records, and exhaust outlet sampling records. Specifically, this embodiment is applied to a waste linen room in a hospital's logistics area. This waste linen room consists of a waste storage room and a contaminated linen storage room connected to the same mechanical ventilation system. The hydrogen sulfide-containing polluted air generated in the two storage rooms flows through each exhaust branch into the polluted air collection point, then sequentially passes through the main air handling unit, the series-connected auxiliary air handling unit, and the exhaust outlet. Hydrogen sulfide sensors and flow sensors are respectively installed at the polluted air collection point sampling section, the main air handling unit inlet sampling section, and the exhaust outlet sampling section. The sensors, with sampling sections perpendicular to the direction of polluted air flow, are located at detection points capable of obtaining representative concentrations and ventilation rates. The hydrogen sulfide sensor has a calibration range of 0–50 mg / m³ and a resolution of 0.01 mg / m³, while the flow sensor has a calibration range of 0–5000 m³ / h. The ranges are derived from the sensor calibration certificates and cover the design operating range of the waste refrigeration unit. Sensors at the inlet, main air handling unit inlet, and exhaust outlet all output raw sampling data at a 1Hz frequency, including sensor identification, sampling section identification, sampling time, measured value, and valid status bit. For each continuous measurement channel, a three-point median filter is used, arranging the current measured value and its two preceding values ​​according to numerical magnitude, and replacing the current measured value with the median value. This is recorded as the [missing value]. The first channel The measurement value is The filter value is This process removes isolated outliers caused by single electromagnetic interference or communication pulses. Filtered values ​​within the detection range and with the sensor's valid status bit normal are retained. Values ​​exceeding the detection range or with abnormal status bits are marked as invalid data. The retained hydrogen sulfide concentration and ventilation rate at the collection port are included in the collection port sampling record. The retained hydrogen sulfide concentration and processing flow rate at the main air handling unit inlet are included in the main air handling record. The retained hydrogen sulfide concentration and ventilation rate at the exhaust port are included in the exhaust port sampling record. This forms boundary sampling data with clear sampling location, sampling time, and data quality status. Under a unified control clock, feedback on the position of the exhaust regulating valve, indoor pressure, start / stop feedback of the main and auxiliary air handling units, treatment intensity, and treatment flow rate are collected to generate equipment operation records. Specifically, pollutant sensors, flow sensors, indoor pressure sensors, exhaust regulating valve actuators, and the main air handling unit controller are connected to the same programmable logic controller (PLC). The PLC's internal clock serves as the unified control clock. The exhaust regulating valve position feedback uses an opening value of 0–100%, the indoor pressure feedback uses a pressure sensor with a range of -100–50 Pa, the main air handling unit start / stop feedback uses 0 to indicate stop and 1 to indicate operation, the treatment intensity feedback uses a percentage of 0–100% of the rated treatment capacity, and the treatment flow rate feedback uses the actual treated air volume of the main air handling unit from 0 to 5000 m³ / h. The quantities mentioned above are derived from the stroke of the exhaust regulating valve, the design pressure of the garbage and linen room, the rated processing capacity of the main air handling unit, and the equipment calibration records. Position feedback, pressure feedback, processing intensity feedback, and processing flow feedback are collected at a frequency of 1Hz. The start and stop status is generated when the status position changes. Each feedback is marked with a time stamp according to a unified control clock, forming an equipment operation record consisting of the collection time, the opening degree of the exhaust regulating valve, the indoor pressure, the start and stop status of the main air handling unit, the processing intensity, and the processing flow. The control event time indicates the time when the programmable controller receives the signal that the exhaust regulating valve has completed its action or when the status position of the main air handling unit changes. The control event is saved using the event trigger time instead of being replaced by the subsequent polling time, so that the equipment operation record can retain the actual order of occurrence of ventilation adjustment and air handling status switching. Based on the pre-calibrated response delay correction of the acquisition links, the time stamps of the collection port sampling records, main air handling unit records, exhaust port sampling records, and pressure feedback are corrected. The control event timestamps for exhaust regulating valve position feedback, main air handling unit operation feedback, and auxiliary air handling unit operation feedback are retained. Specifically, before equipment commissioning, step calibration is performed on the collection port concentration acquisition link, collection port flow acquisition link, main air handling unit inlet concentration acquisition link, main air handling unit processing flow acquisition link, exhaust port concentration acquisition link, exhaust port flow acquisition link, and pressure acquisition link. The concentration link generates an input step by switching between zero gas and a standard gas of known concentration; the flow link generates a flow step by changing the calibration fan speed; and the pressure link generates a pressure step by changing the calibration chamber pressure. The time of step application is recorded as... The moment when the filtered measurement value reaches 50% of the difference between the stable value before and after the step jump is recorded as... , No. The response latency of each acquisition link is based on The response delay includes the total delay caused by sensor response, signal transmission, data acquisition, and median filtering. In this embodiment, the calibrated response delays are 5s for the collection port concentration link, 1s for the collection port flow link, 12s for the exhaust port concentration link, 1s for the exhaust port flow link, and 1s for the pressure acquisition link. For the first... The original time stamp in the acquisition link is The Item record execution Time shift to generate correction time Concentration records and ventilation records with a correction time difference of no more than 1 second within the same sampling section are combined. 1 second is taken from the sampling period of the sensor. If the difference exceeds 1 second, the group of records is marked as incomplete in time. The position feedback of the exhaust regulating valve and the operating status feedback of the main air handling unit continue to use the control event time recorded by the unified control clock. This eliminates the time misalignment caused by different acquisition link response speeds and retains the real time boundary of the change in the status of the execution equipment. According to the corrected timestamps and control event timestamps, the collection port sampling records, main air handling records, exhaust port sampling records, and equipment operation records are aggregated. Records within the same ventilation volume adjustment cycle are combined into synchronous data units, and a synchronous operation sequence is generated according to the time order. Specifically, the ventilation volume adjustment cycle is set to 5 seconds, which is derived from the shortest stable adjustment interval allowed by the exhaust regulating valve controller, in order to unify the start time of the control clock. Construct the first based on the benchmark Synchronous period ,in It lasts for 5 seconds. The time intervals are numbered sequentially starting from 0. When the exhaust regulating valve completes its operation or the main air handling unit switches states within a synchronization period, the synchronization period is divided into a pre-operation period and a post-operation period based on the control event time. Within each synchronization period, the valid collection port sampling record, main air handling record, exhaust port sampling record, and pressure feedback with the correction time closest to and not later than the end of the period are selected. The valid exhaust regulating valve position feedback and main air handling unit operating status feedback at the end of that period are also connected. If the selected record is more than 1 second from the end of the period or lacks any necessary data, an incomplete record is generated. Synchronous data units: Incomplete synchronous data units will not be included in subsequent flow restriction identification and quality budget calculation, and will maintain the current exhaust regulating valve opening. When the record is complete, a synchronous data unit is generated that includes the synchronization period, the concentration at the collection port, the ventilation volume at the collection port, the concentration at the main air handling unit inlet, the processing flow rate of the main air handling unit, the exhaust port concentration, the exhaust port ventilation volume, the exhaust regulating valve opening, the indoor pressure, the start / stop status of the main air handling unit, the processing intensity, and the processing flow rate. For example, if the physical state changes at 10:00:14, the concentration at the collection port will be recorded and output at 10:00:19, and corrected after a 5-second delay. At 10:00:14, the exhaust vent concentration record was output at 10:00:26 and corrected to 10:00:14 after a 12-second delay. The flow rate records at the collection port, exhaust vent, and pressure feedback were all corrected to 10:00:14 after a 1-second delay from 10:00:15. This resulted in the following data being recorded: hydrogen sulfide concentration at the collection port (6.00 mg / m³), airflow at the collection port (2400 m³ / h), hydrogen sulfide concentration at the exhaust vent (0.35 mg / m³), airflow at the exhaust vent (2320 m³ / h), exhaust regulating valve opening (42%), indoor pressure (-24 Pa), and main air handling unit operation. State 1, treatment intensity 70% and treatment flow rate 2280 m³ / h are combined into the same synchronous data unit from 10:00:10 to 10:00:15. Before correction, the concentration record at the collection port and the concentration record at the exhaust port are 7 seconds apart and fall into different adjustment cycles. After correction, the time difference between the two is 0 seconds. In 20 step verifications, the maximum deviation of the correction time from the step application time does not exceed 1 second. The synchronous operation sequence is generated by continuously arranging the synchronous data units according to their time order, providing input data with consistent time boundaries for subsequent flow restriction time period division, pollutant quality balance and ventilation adjustment.

[0025] The present invention is further configured such that, in establishing a normal ventilation baseline based on the opening of the exhaust regulating valve and the actual ventilation volume under normal ventilation conditions, and dividing the flow restriction time period from the synchronous operation sequence according to the changes in the current exhaust regulating valve opening and the actual ventilation volume relative to the normal ventilation baseline, the following steps are taken: From the continuous operation records marked as normal ventilation conditions during the equipment commissioning phase, the opening degree of the exhaust regulating valve and the actual ventilation volume are selected to generate a normal ventilation baseline record containing the normal ventilation opening degree and normal ventilation volume. Specifically, this embodiment uses the aforementioned mechanical ventilation system for garbage and linen rooms with hydrogen sulfide as the gaseous target pollutant. The exhaust regulating valve is installed in the exhaust duct before the exhaust outlet, and the ventilation volume measured by the exhaust outlet flow sensor is used as the actual ventilation volume. The cycle of the synchronous operation sequence is 5 seconds. During the equipment commissioning phase, the exhaust regulating valve controller is set to normal ventilation mode. Normal ventilation mode indicates that the exhaust... The control valve operates according to the designed ventilation conditions, the main air handling unit remains in effective operation, and no equipment fault alarms are generated. Under these conditions, the controller adds a normal ventilation condition marker to the synchronous data unit. The maximum stroke time of the exhaust control valve is 15 seconds. A continuous time of no less than twice this is taken as the benchmark screening time. In this embodiment, seven complete synchronous data units formed within a continuous 35 seconds are selected. Data units with abnormal sensor status, missing data, or exhaust control valve action during the period are discarded. The seven exhaust control valve openings are arranged in ascending order of value, and the fourth item is taken as the normal ventilation opening. The seven actual ventilation volumes were arranged in ascending order of value, and the fourth item was taken as the normal ventilation volume. The selected opening degrees were 69.8%, 70.0%, 70.1%, 70.0%, 69.9%, 70.0%, and 70.1%, with the fourth value after ascending order being 70.0%. The selected actual ventilation volumes were 3588 m³ / h, 3596 m³ / h, 3600 m³ / h, 3608 m³ / h, 3612 m³ / h, 3592 m³ / h, and 3604 m³ / h, with the fourth value after ascending order being 3600 m³ / h. The repeatability error given in the exhaust regulating valve calibration record was ±1 percentage point, and the maximum permissible error given in the flow sensor calibration record was ±2% of the indicated value. Based on this, a normal ventilation opening range of 69%–71% and a normal ventilation volume range of 3528–3672 m³ / h were formed. , Two allowable ranges, record start and end times, and data source identifiers are collected into normal ventilation baseline records. Using intermediate order values ​​to form the baseline can suppress the influence of single high or low values ​​on the normal operating condition baseline, while retaining the normal fluctuations allowed by equipment calibration errors. A flow restriction initiation record is generated when the opening degree of the exhaust regulating valve after its operation is lower than the normal ventilation opening degree and the actual ventilation volume is lower than the normal ventilation volume. Specifically, the exhaust regulating valve operation completion event is retrieved along the synchronous operation sequence, and the exhaust regulating valve opening degree before the operation completion event, the exhaust regulating valve opening degree after the operation completion event, and the actual ventilation volume after the operation are entered into the same operation verification record. The lower boundary of the opening degree range in the normal ventilation benchmark record is recorded as... The lower boundary of the ventilation range is denoted as The opening degree of the exhaust regulating valve after the action is completed satisfy And actual ventilation satisfy Flow-limiting candidate records are generated. To eliminate misjudgments caused by airflow inertia and single flow fluctuations, the 10-second maximum flow stabilization time measured during the step test in the equipment commissioning phase is used as the verification duration. This duration covers two 5-second synchronous data units, and the two consecutive synchronous data units following the flow-limiting candidate record both satisfy the requirement that the opening is lower than [the specified value]. And the actual ventilation volume is lower than The flow restriction status is confirmed in time, and the time when the exhaust regulating valve completes its action is recorded as the flow restriction start time tL. In this embodiment, a control command to reduce the exhaust regulating valve from 70% to 45% is issued at 10:15:00, and feedback on the completion of the action is received at 10:15:08. After the action is completed, the two synchronous data units record the opening degree of the exhaust regulating valve as 45.1% and 45.0%, and the actual ventilation volume as 2870m³ / h and 2800m³ / h, respectively. The opening degree is less than 69% and the actual ventilation volume is less than 3528m³ / h. Therefore, 10:15:08, the opening degree before the action as 70.0%, the opening degree after the action as 45.0%, the actual ventilation volume before the action as 3600m³ / h, and the verified ventilation volume after the action are written into the flow restriction start record. The dual verification of the opening degree change and the ventilation volume change can distinguish the real flow restriction action, valve position feedback deviation, and natural fluctuation of ventilation volume. Starting from the flow restriction start record, a flow restriction operation subsequence is generated by continuing synchronous data units where the exhaust regulating valve opening is lower than the normal ventilation opening. Specifically, taking the time of the flow restriction start record as the starting point, the exhaust regulating valve opening is verified item by item according to the time sequence of the synchronous data units. Complete synchronous data units whose opening is lower than 69% of the lower boundary of the normal ventilation opening range are sequentially connected to the flow restriction operation subsequence. When connecting, the time boundaries of adjacent synchronous data units must be continuous. If the time interval exceeds one ventilation volume adjustment cycle or there is a lack of effective valve position feedback, a sequence interruption mark is generated. After the sequence interruption mark is generated, the current exhaust regulating valve opening is maintained and waits for complete synchronous data units. The flow restriction state is not inferred from missing data. If the exhaust regulating valve is adjusted again during the flow restriction period and the opening is still lower than 69% after the action, the action completion time is used as the starting point. The adjacent operating segments in the flow restriction subsequence are separated and continued. In this embodiment, the opening is maintained at 45% from 10:15:08 to 10:18:00, and the opening is adjusted to 50% from 10:18:00 to 10:18:07. After the action is completed, the actual opening is 50.2% and still lower than 69%. Therefore, the data unit of the previous stage is assigned to the first flow restriction operating segment, and the data unit after 10:18:07 is assigned to the second flow restriction operating segment, forming a flow restriction operating subsequence composed of the flow restriction start time, the time boundary of the synchronous data unit, the opening of the exhaust regulating valve, the actual ventilation volume, and the segment separation time. This subsequence retains the real operating status under different valve positions during the flow restriction process, providing a continuous data range for subsequent collection of pollutant entry and discharge according to the time boundary. When the opening of the exhaust regulating valve and the actual ventilation volume recover to the range defined by the normal ventilation baseline record, a flow restriction termination boundary is generated. If they have not yet recovered, the current end of the synchronous operation sequence is used as the temporary termination boundary, forming a flow restriction period. Specifically, the recovery action of the exhaust regulating valve and the recovery process of the actual ventilation volume are verified along the end of the flow restriction operation sub-sequence. When the opening of the exhaust regulating valve after the recovery action enters 69% to 71% and the actual ventilation volume enters 3528 to 3672 m³ / h, a recovery candidate record is generated, and the aforementioned 10-second maximum flow stabilization time is used for verification. In the recovery state, when two consecutive synchronized data units are within the above range, the start time of the first synchronized data unit is taken as the flow restriction termination boundary tE. If the conditions for opening degree recovery and ventilation volume recovery are not met simultaneously, the current end time of the synchronized running sequence is recorded as the temporary termination boundary tT. The temporary termination boundary is updated with each new synchronized data unit. The flow restriction duration is formed according to the difference between the termination boundary or temporary termination boundary and the flow restriction start time. In this embodiment, the instruction to restore to 70% opening degree is issued at 10:22:00, and received at 10:22:08. Upon completion of the operation, the actual ventilation rate was 3450 m³ / h, which is lower than 3528 m³ / h. Therefore, no flow restriction termination boundary was generated at this time. The exhaust regulating valve openings of the subsequent two synchronized data units were 69.9% and 70.0%, respectively, and the actual ventilation rates were 3540 m³ / h and 3580 m³ / h, respectively. Both fell within the range defined by the normal ventilation baseline record. Therefore, the start time of the first qualified synchronized data unit, 10:22:15, was taken as the flow restriction termination boundary, and the flow restriction period was from 10:15:08 to 10:22:15. The duration is 427 seconds. If the synchronous running sequence is only updated to 10:20:00 and has not yet recovered, then 10:20:00 is used as the temporary termination boundary and a current flow restriction duration of 292 seconds is formed. In this example, the flow restriction period will end 7 seconds earlier if only the exhaust regulating valve is used to restore the time. The joint recovery verification of the opening and the actual ventilation volume can keep the airflow before it has recovered within the flow restriction time range. The final flow restriction period is connected to the subsequent pollutant quality budget calculation. The temporary flow restriction period is updated cyclically with the real-time data.

[0026] The present invention is further configured such that the formation of the pollutant inflow and pollutant outflow during the flow restriction period includes: According to the type of gaseous target pollutant and the sampling sections, the collection port sampling records and exhaust port sampling records in the flow restriction operation subsequence are collected to form a unified concentration and ventilation record. Specifically, this embodiment uses the aforementioned mechanical ventilation system for garbage and linen rooms with hydrogen sulfide as the gaseous target pollutant. The mass budget boundary is defined by the sampling sections of the polluted air collection port and exhaust port. The input object is the flow restriction operation subsequence from the start time of flow restriction (10:15:08) to the end time of flow restriction (10:22:15). The type of gaseous target pollutant is hydrogen sulfide, and the sampling section labels are IN and OUT, respectively. The concentration and ventilation rate in the complete synchronous data unit are collected based on the species and sampling section identification. Records with abnormal sensor status, incomplete time stamp calibration, or concentration and ventilation rate not included in the same synchronous data unit are removed. The measurement status indicates the combination of concentration unit, ventilation rate unit, gas reference temperature, gas reference pressure, and wet or dry basis attributes. In this embodiment, both the concentration sensor and flow sensor use wet basis measurement. The concentration unit is mg / m³, and the ventilation rate unit is m³ / h. The temperature and pressure compensation interface provides a gas temperature of 273–323 K and an absolute pressure of 90–110 kPa. The range is derived from the instrument calibration certificate. The reference temperature is... Set to 273.15K, reference pressure The actual concentration at sampling section s was set to 101.325 kPa. Actual ventilation Actual temperature and actual pressure Execute separately and Generate reference state concentration and reference ventilation The actual concentration in the synchronous data unit at the collection port is 6.00 mg / m³, the actual ventilation rate is 2400 m³ / h, the actual temperature is 298.15 K, and the actual pressure is 100.8 kPa. After conversion, the reference state concentration is 6.583 mg / m³ and the reference state ventilation rate is 2187.4 m³ / h. The actual concentration in the synchronous data unit at the exhaust port is 0.35 mg / m³, the actual ventilation rate is 2320 m³ / h, the actual temperature is 293.15 K, and the actual pressure is 101.0 kPa. After conversion, the reference state concentration is 0.377 mg / m³ and the reference state ventilation rate is 2153.8 m³ / h. The synchronization period, the type of gaseous target pollutant, the sampling section identifier, the reference state concentration, the reference state ventilation rate, and the data validity identifier are combined into a concentration and ventilation rate record, so that the measurement results of different sampling sections have a unified gas reference state. By combining the concentration of gaseous target pollutants with the ventilation rate within the same synchronized data unit, pollutant mass flow rate records are generated for both the inlet and outlet sides. Specifically, the pollutant mass flow rate represents the mass of gaseous target pollutants passing through the sampling section per unit time, and is calculated using the reference state concentration and reference state ventilation rate within the same synchronized data unit. ,in This represents the pollutant mass flow rate at sampling section s within the i-th synchronous data unit, expressed in mg / s. The unit is mg / m³. The unit is m³ / h, and 3600 represents the conversion factor between hours and seconds. The data collected at the collection port is then substituted to obtain... mg / s, obtained by substituting the data collected at the exhaust vent side. mg / s, the product at the collection port side before reference state conversion is: mg / s, the product on the exhaust vent side is mg / s, the mass flow rate before and after conversion remains consistent, thus verifying that temperature and pressure conversion does not change the actual pollutant mass. When the concentration record or ventilation record is missing, the mass flow rate record of the synchronous data unit is not generated, and the synchronous data unit is marked as incomplete mass flow rate. The sampling section identifier, the start and end time of the synchronization period, the type of gaseous target pollutant, the mass flow rate and the complete status are combined into the pollutant mass flow rate record, providing input data with a unified dimension for accumulating pollutant mass along the flow restriction period. Pollutant mass flow rate records from both the inlet and outlet sides are collected along the flow restriction period to generate a flow restriction pollutant flow record containing both pollutant inflow and outflow amounts. Specifically, the duration of the i-th complete synchronized data unit within the flow restriction period is denoted as... The synchronous data unit formed by separating the exhaust regulating valve control events is calculated using its actual start and end times. The remaining synchronous data units For 5 seconds, the mass flow rates at the inlet and outlet sides are treated as hold values ​​within their respective synchronous data units, and the process is executed. and ,in This indicates the amount of pollutants entering during the restricted flow period. This represents the amount of pollutants discharged during the restricted flow period. When continuous synchronous data units have the same mass flow rate, the duration can be merged to simplify recording without changing the cumulative result. In this embodiment, the 427s restricted flow period includes four continuous operating segments with durations of 112s, 120s, 120s, and 75s, respectively. The mass flow rates at the collection port are 4.000mg / s, 4.200mg / s, 3.800mg / s, and 3.600mg / s, respectively, and the mass flow rates at the exhaust port are 0.226mg / s, 0.250mg / s, 0.280mg / s, and 0.320mg / s, respectively. The pollutant inflow is 4.000×112 + 4.200×120 + 3.800×120 + 3.600×75 = 1678.0mg, and the pollutant discharge is 0.226×112 + 0.250×120 + 0.280×120 +0.320×75=112.912mg. The flow restriction start time, flow restriction end time, gaseous target pollutant type, pollutant inflow, pollutant outflow, and synchronous data unit identifiers involved in the accumulation are combined into a flow restriction pollutant flow record. When there are synchronous data units with incomplete mass flow rates, the generation of the final flow record is paused and the current exhaust regulating valve opening is maintained. Accumulation continues after the missing data is supplemented or resampled. In the calibration verification, 4.000mg / s of hydrogen sulfide is continuously input into the mass flow controller for 60s to form a reference inflow of 240.0mg. According to the above process, the cumulative inflow is 239.2mg. The difference is 0.8mg and accounts for 0.33% of the reference inflow, which is within the calibration error coverage of the concentration sensor and flow sensor. The formed flow restriction pollutant flow record can be used as the mass input for subsequent pollutant removal verification and calculation of the pollution load to be released.

[0027] The present invention is further configured such that the generation of the pollutant load to be released includes: Based on the start-stop feedback, treatment intensity feedback, and treatment flow rate feedback of the main air handling unit, the processing operation segments are divided. The processing operation segments where the start-stop status, treatment intensity, and treatment flow rate all match the same air handling performance calibration conditions and the operating status is continuous are considered effective processing segments. Specifically, in this embodiment, the main air handling unit adopts a series structure of alkaline spraying and activated carbon adsorption. The gaseous target pollutant is hydrogen sulfide. The input data includes the start-stop feedback and treatment flow rate feedback of the main air handling unit from the flow restriction start time of 10:15:08 to the flow restriction end time of 10:22:15. The system includes intensity feedback, processing flow feedback, and processing records. Start-stop feedback takes values ​​of 0 or 1. Processing intensity feedback takes values ​​from 0 to 100% and originates from the power setting value of the main air handling unit controller. Processing flow feedback has a range of 0 to 5000 m³ / h and a sampling frequency of 1 Hz. Processing records, after the aforementioned response delay correction, are incorporated into a 5-second synchronous data unit. Continuous synchronous data units with the same start-stop state and unchanged processing intensity setting value are connected as a processing operation segment. Adjacent processing operation segments are separated when the start-stop state changes, the processing intensity changes, or a synchronous data unit is missing. The equipment performance calibration record is divided into segments based on processing intensity and processing flow rate. The current operating segment calibration range at 70% processing intensity is 1800–2500 m³ / h. This range was established by gradually changing the fan flow rate during the commissioning phase and verifying the spray pressure difference, gas-liquid contact state, and main air handling unit outlet concentration. The continuous processing operating segment with operating state 1, processing intensity maintained at 70%, and all processing flow rate feedback within the range of 1800–2500 m³ / h is marked as the effective processing segment. In this embodiment, the period from 10:15:08 to 10:20 is considered an effective processing segment. During the period of 1 minute 02 seconds, the main air handling unit continued to operate, the handling intensity was maintained at 70%, and the handling flow rate was between 1980 and 2310 m³ / h, forming an effective handling section of 352 seconds. After 10:21 minutes 02 seconds, the handling intensity was adjusted to 50% and the handling flow rate dropped to 1650 m³ / h, which did not enter the calibrated flow rate range of 70% handling intensity. Therefore, the following 75 seconds were recorded as an unverified handling section. Screening the handling section according to the equipment performance calibration range can prevent the removal amount in the state of start-stop transition, insufficient handling flow rate or lack of feedback from entering the quality accounting. The lowest stable removal ratio of gaseous target pollutants within the effective treatment zone is selected from the air treatment performance calibration records. The normal ventilation concentration range is formed by continuous and effective records of the gaseous target pollutant concentration at the exhaust vent under normal ventilation conditions. The projection duration is the total time covered from the resumption of ventilation until the exhaust vent concentration enters the normal ventilation concentration range for two consecutive ventilation volume adjustment cycles. The lowest stable removal ratio is formed by the proportion of pollutants removed during the air treatment performance calibration period that did not return to the exhaust channel within the same verification time as the projection duration, relative to the pre-treatment pollutant amount. Specifically, during the commissioning phase of the main air treatment unit, three hydrogen sulfide air treatment performance calibrations are conducted within the same 70% treatment intensity and 1800–2500 m³ / h treatment flow rate range as on-site. For each calibration, a known mass of hydrogen sulfide is input to the main air treatment unit via a mass flow controller, and the pre-treatment pollutant amount is accumulated for each calibration. The amount of pollutants discharged from the main air handling unit outlet during the treatment period And the amount of pollutants that re-enter the exhaust duct within the verification period after input stops. The verification duration is based on a 60-second projection of the load release relationship. This 60-second period is taken from the longest time required for the pollutant exhaust concentration to return to the normal range during the ventilation recovery test after flow restriction. The stable removal ratio calibrated for the rth time is based on... The calculation results are retained if they are between 0 and 1; otherwise, the calibration is marked as an anomaly in quality balance. For the first calibration, the pre-treatment pollutant amount was 600 mg, the discharge during treatment was 105 mg, and the return amount within the verification period was 15 mg. =0.80, the second calibration showed that the amount of pollutants before treatment was 600 mg, the amount discharged during treatment was 96 mg, and the amount returned was 12 mg, resulting in... =0.82, the third calibration showed that the amount of pollutants before treatment was 600 mg, the amount discharged during treatment was 102 mg, and the amount returned was 12 mg. =0.81, the three valid calibration results are arranged in ascending order of value and the first item 0.80 is taken as the lowest stable removal ratio in the range of 70% treatment intensity and 1800~2500m³ / h treatment flow rate. The lowest stable removal ratio represents the lower limit of the proportion of pollutants that can be removed from the exhaust channel within a 60s simulation time to the amount of pollutants before treatment. Using the lowest value in the repeated calibration results can reserve the unproven removal part for the subsequent pollution load to be released. The amount of pollutants flowing through the main air handling unit is calculated based on the gaseous target pollutant concentration and processing flow rate at the inlet of the main air handling unit within the effective treatment section. The pollutant removal amount is calculated by multiplying the pollutant removal amount by the minimum stable removal ratio, and a pollutant removal record is generated. If a minimum stable removal ratio matching the effective treatment section is not obtained, the pollutant removal amount for that effective treatment section is recorded as zero. Specifically, the main air handling unit processing record includes the pre-treatment hydrogen sulfide concentration, processing flow rate, synchronization period, and equipment operating status. The pre-treatment concentration sensor is installed in the main air handling unit inlet pipe with a range of 0–50 mg / m³. The processing flow rate is collected by the flow sensor in the main air handling unit inlet pipe. The process is executed for the i-th synchronization data unit within the effective treatment section. ,in This indicates the mass flow rate of pollutants passing through the main air handling unit, expressed in mg / s. This indicates the pre-treatment pollutant concentration after standardization of metering, with units of mg / m³. This represents the processing flow rate after unified metering, with the unit being m³ / h. Duration of Synchronization Data Unit The pollutants are multiplied and accumulated along the effective treatment section to form the amount of pollutants flowing through the main air handling unit. In this embodiment, continuous synchronous data units with the same pollutant mass flow rate are merged into three processing segments. The durations of the three processing segments are 112s, 120s, and 120s, respectively. The pollutant mass flow rates formed by the pre-processing pollutant concentration and the processing flow rate are 3.20mg / s, 3.10mg / s, and 2.90mg / s, respectively. =3.20×112+3.10×120+2.90×120=1078.40mg. Multiply the amount of pollutants flowing through the main air handling unit by the minimum stable removal ratio to obtain the verified pollutant removal amount. =1078.40×0.80=862.72mg. The pollutant removal record is composed of the type of gaseous target pollutant, the start and end time of the effective treatment section, the treatment intensity, the treatment flow range, the amount of pollutants flowing through the main air treatment unit, the minimum stable removal ratio, and the verified pollutant removal amount. No pollutant removal amount is formed for unverified treatment sections. When the operating status does not achieve the matching minimum stable removal ratio, the pollutant removal amount of the section is recorded as zero, so that the quality income and expenditure only deduct the pollutant mass with treatment records and air treatment performance calibration basis. The non-negative residual amount, after deducting the pollutant discharge and verified pollutant removal from the pollutant inflow, is taken as the pollution load to be released relative to the flow restriction starting point. Specifically, the hydrogen sulfide pollutant inflow is obtained from the aforementioned flow restriction pollutant flow records. mg and pollutant discharge mg, the verified pollutant removal amount obtained from the pollutant removal record. mg, execution The pollution load to be released is formed, among which This indicates the non-negative residual amount of hydrogen sulfide in the waste storage room, exhaust duct, or treatment medium relative to the flow restriction starting point. This means that when the calculation result within the parentheses is less than zero, it is taken as zero and does not constitute a negative pollution load. This embodiment yields... mg, relative to the flow restriction start point, means that only the change in pollutant mass after the start of the flow restriction is calculated. The stable pollutant stock that already exists in the exhaust channel before the flow restriction is not repeatedly included in the pollution load to be released. After the pollution load to be released is formed, it is connected to the candidate ventilation release simulation. When the data is missing or the air treatment status is not verified, the current exhaust regulating valve opening is maintained and the pollution load to be released is recalculated with zero removal. During the equipment debugging and verification, the new hydrogen sulfide input is stopped and the remaining polluted air is introduced into the quantitative absorption device. The cumulative measured releaseable hydrogen sulfide in the exhaust channel at the end of the flow restriction is 699.600 mg, which is 2.768 mg different from the calculated result of 702.368 mg and accounts for 0.39% of the calculated result. It is within the coverage range of the calibration error of the concentration sensor and the flow sensor, which verifies that the treatment record verification, the minimum stable removal ratio and the non-negative mass balance can form a pollution load to be released with physical mass meaning.

[0028] The present invention is further configured such that establishing the load release relationship based on a pre-tested ventilation recovery after flow restriction includes: When the type of gaseous target pollutant remains unchanged, and the start / stop status, treatment intensity, and treatment flow rate of the main air handling unit are consistent with the air handling performance calibration conditions matching the calibration ventilation level, the ventilation test is resumed after flow restriction according to the test load node and calibration ventilation level. Specifically, this embodiment uses the aforementioned mechanical ventilation system for garbage and linen rooms with hydrogen sulfide as the gaseous target pollutant. During the test, the polluted air discharged from the exhaust vent is connected to a temporary secondary absorption device, the gaseous target pollutant remains hydrogen sulfide, the main air handling unit remains in operating state 1 and 70% treatment intensity, and the treatment flow rate is maintained at 1800-2500 m³ / h before resumption. Within the calibration range, the post-recovery treatment flow rate enters the calibration range matched with the corresponding recovery ventilation level. The test load node represents the pollution load to be released formed relative to the flow restriction starting point at the start of recovery ventilation. During the commissioning phase, the flow restriction time is extended step by step, and the pollution load to be released is calculated in real time according to the aforementioned mass budget method. When the exhaust concentration or indoor pressure reaches the allowable boundary, the load increase is stopped. The maximum pollution load to be released previously formed, 1000mg, is taken as the upper boundary of the test. Four test load nodes of 250mg, 500mg, 750mg, and 1000mg are set in the range of 0 to 1000mg, with the node interval being the maximum expected release. One-quarter of the pollution load is released. The maximum absolute deviation of the pollution load to be released for calibration verification is 10mg. Twice of this, 20mg, is used as the node acceptance range. When the pollution load to be released enters the test node ±20mg, the current flow restriction opening is maintained and the actual load before recovery is recorded. The calibration ventilation level represents the ventilation state that can be repeatedly executed in the ventilation volume calibration record of the exhaust regulating valve opening. During the equipment commissioning phase, the exhaust regulating valve opening is changed step by step to form four calibrations: 2400m³ / h at 50% opening, 2800m³ / h at 58% opening, 3200m³ / h at 64% opening, and 3600m³ / h at 70% opening. For each ventilation setting, the allowable ventilation volume deviation is ±2% as given by the flow sensor calibration record. 2400 m³ / h is used as the test flow-limiting state, and 2800 m³ / h, 3200 m³ / h, and 3600 m³ / h are used as the recovery ventilation state. Three repeated tests are performed for each test load node and recovery ventilation setting combination. If the indoor pressure exceeds the design pressure range, the main air handling unit's processing flow exceeds the calibration range, or the sensor is abnormal during the test, the test is terminated and the opening of the exhaust regulating valve before the test is maintained, so that the input range of the load release relationship comes from the load and ventilation conditions that the equipment can actually form and safely execute. Starting from the moment ventilation is restored, the concentration and ventilation volume of gaseous target pollutants at the polluted air collection port, the inlet of the main air handling unit, and the exhaust port are continuously collected, along with the position of the exhaust regulating valve, indoor pressure, and operational feedback from the main air handling unit, to generate a ventilation restoration test sequence. Specifically, when the real-time pollution load to be released enters the acceptance range of the test node, a ventilation restoration command is issued. The moment when the exhaust regulating valve feedback first deviates from the allowable error range of the flow restriction opening in the increasing direction is recorded as the ventilation restoration start time tR, and tR is used to separate the synchronization before and after the action. The data unit, starting from tR, collects data at 1Hz on the following parameters: hydrogen sulfide concentration at the manifold, hydrogen sulfide concentration at the manifold, hydrogen sulfide concentration at the exhaust vent, exhaust vent ventilation, exhaust regulating valve opening, indoor pressure, main air handling unit start / stop status, treatment intensity, and treatment flow rate. It then performs median filtering, response delay correction, and 5-second ventilation adjustment cycle aggregation to form a continuous synchronous data unit. Before restoration, the hydrogen sulfide concentration at the exhaust vent in the normal ventilation record ranged from 0.32 to 0.38 mg / m³. After ventilation was restored, two consecutive synchronous data units... The data collection ends when the exhaust vent concentration enters the specified range and the exhaust regulating valve opening, actual ventilation volume, and main air handling unit status remain within the test range. The resumption ventilation test sequence represents a complete synchronous data unit arranged chronologically from the start of resumption ventilation until the exhaust vent concentration returns to the normal range. In this embodiment, a test load node of 750 mg and a calibration ventilation level of 3200 m³ / h are selected. Before resumption, the actual pollutant load to be released is 746.8 mg, and the exhaust regulating valve is operated from 50% opening to 64% opening. The ventilation was restored at 10:40:12. The actual ventilation rate after restoration was maintained at 3136–3264 m³ / h. The exhaust concentration continuously entered the range of 0.32–0.38 mg / m³ during the 11th and 12th ventilation rate adjustment cycles, forming a 60-second ventilation restoration test sequence containing 12 synchronous data units. If there was data loss, time discontinuity, or change in air handling status in the sequence, the entire test was marked as invalid and re-executed to avoid using interpolated data to form a load release relationship. The continuous exhaust pollutant quantity is calculated based on the pollutant inflow and verified pollutant removal in the ventilation recovery test sequence. The non-negative residual quantity after deducting the continuous exhaust pollutant quantity from the pollutant discharge quantity is arranged according to the ventilation volume adjustment cycle to generate a load release sequence. Specifically, the pollutant inflow is accumulated for the i-th synchronous data unit in the ventilation recovery test sequence. Verified pollutant removal volume and pollutant emissions The mass of pollutants newly entering the exhaust duct within the synchronous data unit that have not been removed by the main air handling unit is recorded as the continuous exhaust pollutant quantity. ,implement The continuous exhaust pollutant quantity represents the mass of pollutants that, after effective treatment, can enter the exhaust vent. The non-negative portion of the pollutant discharge exceeding the continuous exhaust pollutant quantity is recorded as the segmented release quantity. ,implement The segmented release volume represents the mass of pollutants entering the exhaust vent during the i-th ventilation volume adjustment cycle from the pollution load to be released formed during the flow restriction period, arranged according to the ventilation volume adjustment cycle. A load release sequence was formed. In this embodiment, the first synchronous data unit of the first repeated test lasted 5 seconds, with a pollutant intake of 20.0 mg, a verified pollutant removal of 18.5 mg, and a pollutant discharge of 53.5 mg, resulting in a continuous exhaust pollutant volume of 1.5 mg and a segmented release volume of 52.0 mg. The second synchronous data unit had a pollutant intake of 20.0 mg, a verified pollutant removal of 18.5 mg, and a pollutant discharge of 41.5 mg, resulting in a continuous exhaust pollutant volume of 1.5 mg and a segmented release volume of 40.0 mg. According to... The remaining synchronous data units are processed in the same way to form the first load release sequence of 52.0mg, 40.0mg, 30.0mg, 22.0mg, 15.0mg, 9.0mg, 5.0mg, 2.5mg, 1.2mg, 0.5mg, 0.2mg and 0.1mg. When the pollutant discharge is lower than the continuous exhaust pollutant discharge, the segmented release is recorded as zero to prevent negative release from sensor error or air handling status fluctuations. This separates the exhaust pollutant mass generated by the current continuous input from the release mass generated by the historical load of flow restriction. Load release sequences are compiled based on the type of gaseous target pollutant, test load nodes, and actual ventilation volume. The highest segmented release volume within each ventilation volume adjustment cycle in repeated tests is selected. Then, the highest segmented release volume of the same actual ventilation volume and the same ventilation volume adjustment cycle is corrected for cumulative maximum value along the increasing direction of the test load nodes to establish the load release relationship. Specifically, load release sequences formed by repeated tests are compiled according to the type of gaseous target pollutant, test load nodes, calibrated ventilation level, and ventilation volume adjustment cycle number. When the sequence lengths of the same test combination are different, the cycle number is aligned with the common starting point of the ventilation recovery start time. In subsequent cycles where the exhaust concentration has continuously recovered to the normal range, the segmented release volume is recorded as zero. In the i-th cycle, the highest value is selected from the segmented release volumes of the three repeated tests to form the upper limit value of release. ,implement The first-cycle release amounts in three repeated tests at the 750mg test load node and the 3200m³ / h ventilation level were 52.0mg, 55.0mg, and 53.0mg, respectively, yielding an upper limit of 55.0mg for the first-cycle release. Subsequent cycles were processed to obtain upper limit sequences of release amounts of 55.0mg, 41.0mg, 31.0mg, 23.0mg, 16.0mg, 9.2mg, 5.3mg, 2.7mg, 1.3mg, 0.55mg, 0.22mg, and 0.10mg. Combining the hydrogen sulfide label, the 750mg test load node, the 3200m³ / h calibrated ventilation level, the actual ventilation range, the 5s adjustment period, and the upper limit sequence of release amounts into a single load-release relationship. Record the results, process the remaining test load nodes and calibrate ventilation levels using the same process to form a load release relationship, and conduct a fourth verification test to obtain load release sequences of 54.0 mg, 39.5 mg, 30.0 mg, 22.0 mg, 15.5 mg, 8.9 mg, 5.1 mg, 2.5 mg, 1.2 mg, 0.50 mg, 0.20 mg and 0.08 mg. The release amount in each cycle did not exceed the upper limit sequence. When the verification release amount exceeded the upper limit, the test combination was marked as a state to be supplemented and repeated tests were added. The highest value of the cycle was then selected again so that the established load release relationship could express the release process of different pollutant loads to be released under different recovery ventilation rates using the measured upper limit of each cycle. Under the same actual ventilation volume and the same ventilation volume adjustment cycle, the release upper limit values ​​of adjacent nodes are compared sequentially along the increasing direction of the test load nodes. The release upper limit value of the current node is replaced by the larger value between the release upper limit value of the current node and the release upper limit value of the previous smaller load node, so that the corrected release upper limit value does not decrease as the test load node increases.

[0029] The present invention is further configured such that the exhaust risk determination concentration for generating candidate ventilation volumes includes: From the calibration records of exhaust regulating valve opening and ventilation volume, a calibration ventilation level higher than the current ventilation volume but not higher than the normal ventilation volume is selected to generate a candidate ventilation volume sequence. Specifically, this embodiment uses the aforementioned mechanical ventilation system for garbage and linen rooms with hydrogen sulfide as the gaseous target pollutant. The current exhaust regulating valve opening is 50% and the current ventilation volume is 2400 m³ / h, the normal ventilation opening is 70% and the normal ventilation volume is 3600 m³ / h, and the exhaust regulating valve... The calibration record for ventilation opening and ventilation volume includes four calibration ventilation levels: 2400 m³ / h at 50% opening, 2800 m³ / h at 58% opening, 3200 m³ / h at 64% opening, and 3600 m³ / h at 70% opening. These calibration ventilation levels represent the ventilation state that can be repeatedly achieved through a fixed exhaust valve opening during the equipment commissioning phase, with the actual ventilation volume within ±2% of the flow sensor's calibration error range. Each calibration ventilation level is executed sequentially. Scope verification, including Indicates the current ventilation volume. Indicates the first Each calibrated ventilation setting The normal ventilation rate is indicated by the 2400 m³ / h setting, which is the same as the current ventilation rate and is not included in the candidate range. The 2800 m³ / h, 3200 m³ / h, and 3600 m³ / h settings are all higher than the current ventilation rate but not higher than the normal ventilation rate. The candidate ventilation rates are arranged in ascending order to form the candidate ventilation rate sequence {2800 m³ / h, 3200 m³ / h, 3600 m³ / h}. At the same time, the 58%, 64%, and 70% exhaust regulating valve openings associated with the three candidate ventilation rates and the actual ventilation rate ranges of 2744~2856 m³ / h, 3136~3264 m³ / h, and 3528~3672 m³ / h are retained so that subsequent simulations and adjustment actions only use the executable ventilation states calibrated by the equipment. From the load release relationships monotonically corrected by the test load nodes, select the test load node that is not less than the current pollution load to be released and is closest to it, and obtain the upper limit sequence of release under the candidate ventilation rate. If there is no test load node that meets the conditions, mark it as an uncalibrated candidate quantity; specifically, obtain the pollution load to be released from the current mass budget record. mg, arrange the hydrogen sulfide test load nodes of 250mg, 500mg, 750mg and 1000mg in the load release relationship in ascending order of value, and execute them one by one. Scope verification, including This represents the m-th experimental load node, where the difference is selected from the 750mg and 1000mg nodes that meet the conditions. The smallest node at 750 mg has a difference of 47.632 mg. Using a node no less than the current pollution load to be released allows the experimental release conditions to cover the current load without extrapolating from a smaller load node. Release upper bound sequences associated with candidate ventilation rates of 2800 m³ / h, 3200 m³ / h, and 3600 m³ / h were obtained from the 750 mg experimental load node. The release upper bound sequence at 2800 m³ / h is {38.0, 31.0, 24.0, 18.0, 13.0, 8.0, 5.0, 3.0, 1.5, 0.7, 0.3, 0.1} mg, and the release upper bound sequence at 3200 m³ / h is {55.0, 41.0, 31.0, 23.0, 16.0, ... The upper limit sequence for release at 3600 m³ / h is {72.0, 52.0, 38.0, 27.0, 18.0, 11.0, 6.5, 3.2, 1.5, 0.7, 0.3, 0.12} mg, where the values ​​in each sequence represent the upper limit of the segmented release amount within 12 5s ventilation rate adjustment cycles after the resumption of ventilation. When the current pollutant load to be released is higher than 1000 mg or the selected test load node lacks a load release relationship record for a certain candidate ventilation amount, the candidate ventilation amount is marked as an uncalibrated candidate amount and no exhaust risk judgment concentration is generated to prevent the use of data beyond the test coverage to perform the resumption of ventilation. Based on the highest pollutant mass flow rate at the polluted air collection inlet during the flow restriction period, the lowest stable removal ratio obtained by the main air handling unit under the calibration conditions of candidate ventilation matching, and the release upper limit sequence, a candidate exhaust pollutant mass flow sequence is generated. Specifically, pollutant mass flow rate records at the collection inlet side that have undergone outlier removal and have complete mass flow rate status are retrieved along the flow restriction operation sub-sequence. The highest value of 4.200 mg / s is selected from 4.000 mg / s, 4.200 mg / s, 3.800 mg / s, and 3.600 mg / s as the upper limit of the inlet mass flow rate during the extrapolation period. Ventilation adjustment cycle The duration is 5 seconds, and the continuous amount of pollutants entering during each simulation cycle is... mg, obtained from the main air handling unit performance calibration records, showed the lowest stable removal ratios of 0.82, 0.80, and 0.76 at candidate ventilation rates of 2800 m³ / h, 3200 m³ / h, and 3600 m³ / h, respectively. The corresponding main air handling unit flow rate segment calibration ranges were 2744–2856 m³ / h, 3136–3264 m³ / h, and 3528–3672 m³ / h, respectively. The three ratios were taken as the lowest values ​​among 70% treatment intensity and repeated calibration results within the corresponding segment calibration ranges. Formation of candidate ventilation The continuous exhaust pollutant volume for each simulation cycle, of which The minimum stable removal rate is indicated by the candidate ventilation rate. The continuous exhaust pollutant amounts were found to be 3.78 mg at 2800 m³ / h, 4.20 mg at 3200 m³ / h, and 5.04 mg at 3600 m³ / h. These continuous exhaust pollutant amounts were then periodically added to the upper release limit sequence and the process was executed. ,in This represents the upper limit of the release of the candidate ventilation rate q during the i-th ventilation rate adjustment cycle. This represents the mass of candidate exhaust pollutants formed by the continuous inflow of pollutants and the pollution load to be released during the cycle. Thus, the mass sequence of candidate exhaust pollutants at 2800 m³ / h is obtained: {41.78, 34.78, 27.78, 21.78, 16.78, 11.78, 8.78, 6.78, 5.28, 4.48, 4.08, 3.88} mg, and the mass sequence of candidate exhaust pollutants at 3200 m³ / h is obtained: {59.20, 45.20, 35.20, 27.20, 20.20, 13.40, 9.50}. The candidate exhaust pollutant mass sequence at 3600 m³ / h is {77.04, 57.04, 43.04, 32.04, 23.04, 16.04, 11.54, 8.24, 6.54, 5.74, 5.34, 5.16} mg, with a mass flow rate of 6.90, 5.50, 4.75, 4.42, 4.30 mg. The continuous exhaust portion is formed by using the highest mass flow rate at the collection port during the flow restriction period and the lowest stable removal ratio under the candidate ventilation rate, so that the candidate exhaust pollutant mass sequence simultaneously covers both continuously input pollutants and historical pollution loads to be released. Based on the exhaust volume formed by the candidate ventilation volume during the ventilation volume adjustment period, the candidate exhaust pollutant mass sequence is converted into an exhaust concentration sequence, and the highest concentration is selected as the exhaust risk assessment concentration. Specifically, for candidate ventilation volumes... implement The exhaust volume is formed within a ventilation volume adjustment cycle, of which The unit is m³ / h. The unit is seconds (s). The periodic exhaust volumes at candidate ventilation rates of 2800 m³ / h, 3200 m³ / h, and 3600 m³ / h are 3.889 m³, 4.444 m³, and 5.000 m³, respectively. The i-th item in the candidate exhaust pollutant mass sequence is then processed. A sequence of exhaust concentrations is formed, among which The unit is mg. The units are mg / m³. The exhaust gas concentration sequence at 2800 m³ / h is {10.743, 8.943, 7.143, 5.601, 4.315, 3.029, 2.258, 1.743, 1.358, 1.152, 1.049, 0.998} mg / m³, and the exhaust gas concentration sequence at 3200 m³ / h is {13.320, 10} mg / m³. The exhaust gas concentration sequence at 3600 m³ / h is {15.408, 11.408, 8.608, 6.408, 4.608, 3.208, 2.308, 1.170, 7.920, 6.120, 4.545, 3.015, 2.138, 1.553, 1.238, 1.069, 0.995, 0.968} mg / m³, ... The highest values ​​of 0.648, 1.308, 1.148, 1.068, and 1.032 mg / m³ were selected from each exhaust concentration sequence to form exhaust risk judgment concentrations of 10.743 mg / m³ at 2800 m³ / h, 13.320 mg / m³ at 3200 m³ / h, and 15.408 mg / m³ at 3600 m³ / h. In the fourth ventilation recovery verification, the highest measured concentrations of the three candidate ventilation volumes were 10.491 mg / m³, 13.050 mg / m³, and 15.060 mg / m³, respectively, none of which exceeded the corresponding exhaust risk judgment concentrations. The exhaust risk judgment concentrations and their candidate ventilation volume identifiers were incorporated into subsequent exceedance risk comparisons, enabling the peak exhaust concentration of different recovery ventilation volumes to be evaluated based on the measured upper limit of load release before the exhaust regulating valve is activated.

[0030] The present invention is further configured such that comparing the exhaust risk determination concentration with the exhaust outlet concentration limit of the gaseous target pollutant to generate an exceedance risk record including candidate ventilation volume and exceedance pollutant includes: Based on the exhaust control standards implemented at the exhaust outlets, an exhaust outlet concentration limit record is generated, including the gaseous target pollutant, the exhaust outlet concentration limit, and the metering status. Specifically, this embodiment uses the aforementioned mechanical ventilation system for garbage and linen storage rooms with hydrogen sulfide as the gaseous target pollutant. The exhaust outlet identifier, current exhaust control standard identifier, applicable document validity period, gaseous target pollutant name, exhaust outlet concentration limit, and metering status are obtained from the environmental management parameter interface. Environmental management parameters are entered into the controller after being reviewed by the project's environmental management documents and applicable exhaust control standards. When standards change, the original record's expiration time is retained, and a new record is activated. The metering status indicates the concentration unit used for the exhaust outlet concentration limit, gas reference temperature, gas reference pressure, wet or dry basis attributes, and concentration statistical form. In this embodiment, the exhaust vent is labeled OUT, the gaseous target pollutant is hydrogen sulfide, and the project operation control document specifies that the instantaneous exhaust vent concentration limit for hydrogen sulfide is 12.000 mg / m³, the reference temperature is 273.15 K, the reference pressure is 101.325 kPa, and the concentration attribute is wet basis. The exhaust risk assessment concentration adopts the same concentration unit, reference temperature, reference pressure, wet basis attribute, and instantaneous highest value statistical form, so no further conversion is needed. When there are two or more existing exhaust vent concentration limits, the concentration unit and gas reference state are first converted to a consistent state, and then the limit with the smaller value is selected to enter the exhaust vent concentration limit record. When the unit is μg / m³, it is divided by 1000 to convert to mg / m³. The actual state concentration needs to be converted to the reference state. ,in Indicates the actual concentration. and The absolute pressure and temperature under measurement conditions are indicated by Pr and Tr, which represent the reference pressure and reference temperature used for the exhaust outlet concentration limit. When a valid standard cannot be obtained, the exhaust outlet marking is inconsistent, or the measurement status cannot be converted, the gaseous target pollutant is marked as an unverified limit. The exhaust outlet marking OUT, hydrogen sulfide marking, 12.000 mg / m³ exhaust outlet concentration limit, measurement status, and document validity period are combined into an exhaust outlet concentration limit record, so that the limit used for risk comparison has a clear source of implementation and measurement basis. The exhaust risk assessment concentration at the candidate ventilation rate is compared with the exhaust outlet concentration limit of the gaseous target pollutant, and pollutants exceeding the limit and those not exceeding the limit are marked respectively. Specifically, the hydrogen sulfide exhaust risk assessment concentrations of 10.743 mg / m³ at a candidate ventilation rate of 2800 m³ / h, 13.320 mg / m³ at a candidate ventilation rate of 3200 m³ / h, and 15.408 mg / m³ at a candidate ventilation rate of 3600 m³ / h are obtained from the candidate exhaust risk assessment concentration records. The gaseous target pollutant identification, exhaust outlet identification, and metering status in the candidate records are verified item by item with the exhaust outlet concentration limit records. If the identification and metering status are consistent, the procedure is executed. ,in Indicates candidate ventilation volume The concentration of exhaust gas is used to determine the risk of air pollution. This indicates the concentration limit of gaseous target pollutants at the exhaust outlet. This represents the difference between the concentration used to assess the risk of exhaust gas and the concentration limit at the exhaust outlet. When the value is greater than 0, the gaseous target pollutant is marked as an excessive pollutant. When the concentration is ≤0, the gaseous target pollutant is marked as a pollutant that does not exceed the standard. (This is based on a candidate ventilation rate of 2800 m³ / h.) =10.743-12.000=-1.257mg / m³, hydrogen sulfide is marked as a pollutant within the standard range, at a candidate ventilation rate of 3200m³ / h. =13.320-12.000=1.320mg / m³, hydrogen sulfide is marked as an excessive pollutant, at a candidate ventilation rate of 3600m³ / h =15.408-12.000=3.408mg / m³, hydrogen sulfide is marked as pollutant exceeding the standard. The candidate ventilation volume, gaseous target pollutant, exhaust risk judgment concentration, exhaust outlet concentration limit, difference and comparison mark are combined into a risk comparison record. When the candidate ventilation volume is marked as uncalibrated candidate volume, the exhaust outlet concentration limit is in an unverified state or the measurement state cannot be unified, the numerical comparison is not performed and a risk unverified mark is generated, so as to avoid classifying the candidate ventilation volume that lacks test coverage or limit basis into the safe candidate range. Exceeding pollutants are collected according to candidate ventilation volumes, generating exceedance risk records. Candidate ventilation volumes that have completed risk verification and do not contain exceeding pollutants generate no exceedance risk records. Uncalibrated candidate volumes are marked as risk unverified. Specifically, risk comparison records are collected according to candidate ventilation volumes. Exceedance risk records are generated when the same candidate ventilation volume contains at least one exceeding pollutant. No exceedance risk records are generated when all gaseous target pollutants have completed risk verification and do not contain exceeding pollutants. Risk unverified status is generated when there are uncalibrated candidate volumes, unverified limits, or inconsistent measurement statuses and no exceeding pollutants have yet been identified. In this embodiment, the 2800 m³ / h candidate ventilation volume has completed hydrogen sulfide risk verification and does not contain exceeding pollutants, generating a no exceedance risk record containing the candidate ventilation volume of 2800 m³ / h and an exhaust risk judgment concentration of 10.743 mg / m³. The 3200 m³ / h candidate ventilation volume generates a record containing hydrogen sulfide and an exceedance difference of 1.320 mg / m³. The record of exceeding the standard risk for / m³ is generated for the candidate ventilation volume of 3600m³ / h, which includes hydrogen sulfide and an excess difference of 3.408mg / m³. If the current pollution load to be released is higher than the maximum test load node of 1000mg in the load release relationship, then all three candidate ventilation volumes will generate a risk unverified state and no record of no exceeding the standard risk should be generated. The record of no exceeding the standard risk will be connected to the subsequent ventilation volume and pressure verification. The record of exceeding the standard risk and the risk unverified state will be excluded from the range of executable candidates. In the ventilation recovery verification test, the highest measured exhaust concentration at the 2800m³ / h level is 10.491mg / m³ and does not exceed the exhaust outlet concentration limit of 12.000mg / m³. When directly restored to 3600m³ / h, the highest measured exhaust concentration is 15.060mg / m³ and exceeds the exhaust outlet concentration limit. The verification result is consistent with the generated risk state, thus completing the distinction of the exceeding risk of the candidate ventilation volume before the exhaust regulating valve is activated.

[0031] The present invention is further configured such that the screening of candidate ventilation volumes that do not pose a risk of exceeding the standard and whose indoor pressure is within the design pressure range, forming an executable ventilation volume range that includes only the calibrated candidate ventilation volumes, includes: Based on the ventilation volume and indoor pressure records covering the allowable operating conditions of the equipment during the equipment commissioning phase, a ventilation volume and pressure verification record including the pressure variation range is formed; specifically, the ventilation volume and pressure verification record is formed: taking the mechanical ventilation system of the garbage and linen room using alkaline spraying and activated carbon adsorption to treat hydrogen sulfide as the implementation object, the indoor pressure represents the indoor gauge pressure relative to the outdoor environment, and a negative value indicates that the indoor pressure is negative. The design pressure range defined by the garbage and linen room design documents and the duct strength verification documents is […]. 35, 15]Pa, the permissible operating states of the equipment are divided into three states according to the equipment interlock table: normal operation of the main air handling unit, high-intensity operation of the main air handling unit, and joint operation of the main air handling unit and the auxiliary air handling unit. During the equipment commissioning phase, the exhaust regulating valve is sequentially maintained at the calibrated ventilation level of 2800, 3200, and 3600 m³ / h, and each level is maintained for 60 seconds under each of the three permissible operating states, with a flow rate of [missing information]. An indoor pressure sensor with a pressure range of 100–50 Pa and a maximum permissible error of ±1 Pa collects pressure values ​​at a frequency of 1 Hz. Simultaneously, it collects the actual ventilation volume and equipment operating status. If the actual ventilation volume is within ±2% of the calibrated ventilation volume and the sensor does not output a fault code, the pressure sample is retained. A three-point median filter is applied to the retained pressure sample to remove single-point pulse interference. The three-point median filter arranges three adjacent pressure values ​​in numerical order and replaces the center sample value with the median value. Let the filtered pressure value for all permissible operating states under the j-th calibrated ventilation setting be... Where 's' represents the device operating status, To indicate the sampling order, use and Forming a range of pressure variations, =1Pa is taken from the maximum permissible error of the pressure sensor and used to cover measurement uncertainties. In this embodiment, the extreme filtered pressure values ​​obtained at the 2800, 3200, and 3600 m³ / h settings are as follows: 23~ 21Pa, 30~ 26Pa and 41~ 35Pa, the pressure variation ranges resulting from the expansion of measurement error are as follows: 24~ 20Pa 31~ 25Pa and 42~ 34Pa, the calibrated ventilation level, the allowable actual ventilation range, the pressure change range, and the operating status of the covered equipment are combined to form a ventilation and pressure verification record, so that subsequent pressure verification adopts the pressure boundary covering the changes in the status of the covered equipment and measurement errors; The candidate ventilation volume is matched with the ventilation volume and pressure verification records to generate pressure qualified records, pressure limited records, or pressure unverified records. Specifically, the aforementioned candidate ventilation volume sequence {2800, 3200, 3600} m³ / h is received, and each candidate ventilation volume is matched with the calibrated ventilation level in the ventilation volume and pressure verification record. The record is verified to ensure it covers all permissible operating conditions and that the candidate ventilation volume falls within ±2% of the actual ventilation volume range for that level. The design pressure lower and upper limits are respectively... Pa and Pa, when the pressure variation range meets and Pressure compliance records are generated in real time, when there is a or Pressure limitation records are generated when a calibrated ventilation setting is not matched, the pressure sample is invalid, or the verification record does not cover all permissible operating states. For the 2800 m³ / h setting, a pressure unverified record is generated. 24~ 20Pa and 3200m³ / h settings 31~ 25Pa is generally located in 35~ Within 15 Pa, pressure qualification records were generated, and the lower limit of pressure at the 3600 m³ / h setting was recorded. 42Pa is lower than the lower limit of the design pressure. 35Pa, generate a pressure limit record. This verification rule uses the complete pressure change range as the judgment object to avoid the instantaneous pressure value being within the design range while the pressure exceeds the limit under other allowable operating conditions. Candidate ventilation volumes with no records of exceeding safety limits and acceptable pressure are included in the executable candidate records. Specifically, the aforementioned results of the exceeding safety limit verification are accepted. Among them, the hydrogen sulfide exhaust risk assessment concentration of the 2800 m³ / h candidate ventilation volume is 10.743 mg / m³, which is lower than the exhaust outlet concentration limit of 12.000 mg / m³ and has no records of exceeding safety limits. The exhaust risk assessment concentrations of the 3200 m³ / h and 3600 m³ / h candidate ventilation volumes are 13.320 mg / m³ and 15.408 mg / m³, respectively, and have records of exceeding safety limits. Candidate ventilation volumes with no records of exceeding safety limits are grouped into a set. m³ / h, forming a set of candidate ventilation volumes with qualified pressure records. m³ / h, obtained through set intersection operation Obtain the set of executable candidates m³ / h, and among them, 2800 m³ / h candidate ventilation rate, 10.743 mg / m³ exhaust risk assessment concentration, 24~ The 20Pa pressure variation range and the combination of the two verification statuses are the executable candidate records. Candidate ventilation volumes with records of exceeding the standard risk, pressure limitation, unverified risk status, or unverified pressure are not included in the executable candidate set, so that each candidate ventilation volume transmitted to the ventilation control link has both exhaust risk verification basis and indoor pressure verification basis. From the executable candidate records, select the record with the smallest difference between the current ventilation volume and the current ventilation volume as the starting point of the interval. Collect consecutively adjacent executable candidate records from the interval starting point in ascending order of candidate ventilation volumes to form an executable ventilation volume interval. If no executable candidate records exist, a record with no executable interval is generated. Specifically, check the continuity of executable candidate records according to their position in the original candidate ventilation volume sequence. Form a continuous ventilation volume group with one or more consecutively positioned executable candidate records, and use the first and last items of this group as the lower and upper boundaries of the interval, respectively. The interval only includes the calibrated ventilation levels listed in the candidate ventilation volume sequence between the aforementioned boundaries. Uncalibrated continuous ventilation volumes are not included in the execution range. In this embodiment, the executable candidate set only includes 2800 m³ / h, thus forming a single executable ventilation volume interval [2800, 2800] m³ / h, which is then passed to the exhaust regulating valve step-by-step control process. When the executable candidate set is empty, a record of an unexecutable interval containing risk-limited or pressure-limited markers is generated and passed to the auxiliary air handling control process. During field verification, the actual ventilation volume was adjusted to 2816 m³ / h, and the indoor pressure was measured to be... The pressure was 22 Pa, and the highest concentration of hydrogen sulfide at the exhaust vent was 10.491 mg / m³. Both measured values ​​fell within the range of 22 Pa. 24~ The 20Pa calibration range is below the exhaust outlet concentration limit of 12.000 mg / m³. Additionally, under equipment commissioning and protection conditions, the indoor pressure was measured when the actual ventilation rate was adjusted to 3588 m³ / h. The pressure was 39 Pa and the highest concentration of hydrogen sulfide was 15.060 mg / m³, which was consistent with the pressure limitation record and the risk record of exceeding the standard at the 3600 m³ / h level. This completed the closed-loop process of record verification, pressure classification, risk joint screening, interval output and on-site result verification.

[0032] The present invention is further configured such that controlling the exhaust regulating valve or activating the auxiliary air handling unit connected in series downstream of the main air handling unit according to the executable ventilation range includes: When an executable ventilation volume range exists, candidate ventilation volumes within the range that are higher than the current ventilation volume are arranged in ascending order to generate a step-by-step adjustment sequence. Specifically, taking the mechanical ventilation system of a garbage and clothing room with hydrogen sulfide as the gaseous target pollutant, an alkaline spray and activated carbon adsorption combination as the main air handling unit, and an impregnated activated carbon adsorption unit as the auxiliary air handling unit, the ventilation volume adjustment cycle is taken as 5 seconds, which is the same as the synchronous operation sequence mentioned above. The current exhaust regulating valve opening is 50%, and the actual ventilation volume is... The capacity is 2400 m³ / h. The executable ventilation range [2800, 2800] m³ / h formed by the previous processing step is received. From the calibrated ventilation levels included in this range, those higher than [the specified value] are retained. The candidate ventilation volumes are arranged in ascending order. In this embodiment, only 2800 m³ / h is retained, thus forming a step-by-step adjustment sequence S = (2800). The step-by-step adjustment sequence represents the calibrated ventilation levels that have completed the verification of excessive risk and indoor pressure and are allowed to be executed in the order of arrangement. When the executable ventilation volume range includes two adjacent calibrated levels, 2800 m³ / h and 3200 m³ / h, S = (2800, 3200) is formed. During the control process, only the first item of S is allowed to be entered from the current level. The next item is processed after the operation data verification of the current level is completed, so that the exhaust regulating valve will not exceed the intermediate ventilation level that has not yet been verified using actual operation data. The exhaust regulating valve is activated based on the first candidate ventilation volume in the step-by-step adjustment sequence, ensuring that the actual ventilation volume remains within the calibration range of that candidate ventilation volume for at least one complete ventilation volume adjustment cycle. Specifically, the calibrated ventilation valve opening of 58% for the 2800 m³ / h calibration ventilation level is obtained from the ventilation volume calibration record. This calibration record is generated by gradually changing the valve opening and collecting stable ventilation volumes during the equipment commissioning phase. The calibration ventilation volume for 50% opening is 2400 m³ / h, and the calibration ventilation volume for 58% opening is 2800 m³ / h. The allowable ventilation volume range is formed using the ±2% deviation specified in the calibration record. The calculated values ​​are 2800 × 0.98 = 2744 m³ / h and 2800 × 1.02 = 2856 m³ / h. The controller changes the opening command from 50% through the exhaust regulating valve execution interface. The actual valve position is collected at a frequency of 1Hz through the position feedback interface, and the actual ventilation volume is collected at a frequency of 1Hz through the flow sensor. The valve position feedback and ventilation volume are included in the same 5s synchronous data unit according to the aforementioned response delay correction method. When the exhaust regulating valve output action completes the feedback and the actual ventilation volume in a complete 5s synchronous data unit is between 2744 and 2856 m³ / h, the current level of regulation is completed because 2816 m³ / h is within the calibration range of 2744 to 2856 m³ / h. At the same time, the indoor pressure is obtained as -22 Pa and confirmed to be within the design pressure range of -35 to -15 Pa. If the actual ventilation volume does not enter the calibration range, 2800 m³ / h is retained as the current regulation target and the next item in the step-by-step regulation sequence is not processed. Thus, the completion status of the exhaust regulating valve action is limited by the feedback of the actual ventilation volume. The gaseous target pollutant concentrations and ventilation volumes collected after adjustment at the polluted air collection port, main air handling unit inlet, and exhaust port, along with the exhaust regulating valve position, indoor pressure, and main air handling unit operation feedback, are integrated into the synchronous operation sequence to regenerate the pollution load to be released, the exceedance risk record, and the executable ventilation volume range. If a higher candidate ventilation volume exists, the adjustment is repeated. Specifically, the hydrogen sulfide concentration and ventilation volume at the collection port, the hydrogen sulfide concentration and treatment flow rate at the main air handling unit inlet, the hydrogen sulfide concentration and ventilation volume at the exhaust port, the 58% exhaust regulating valve opening, indoor pressure, and the main air handling unit operation status are integrated into the synchronous operation sequence to obtain the pollutant entry volume within the first 5-second ventilation volume adjustment cycle. 21.000 mg, pollutant discharge The amount of pollutants removed was 41.034 mg, as verified by the main air handling unit's treatment records. It is 17.220 mg, of which The calculation was performed using an exhaust vent hydrogen sulfide concentration of 10.491 mg / m³, an actual ventilation rate of 2816 m³ / h, and a 5-second cycle. The calculation process is as follows: mg, the amount of pollutant load to be released before adjustment. mg access quality income and expenditure records, according to Update the pollution load to be released, and obtain mg, after updating the current ventilation rate to 2816 m³ / h, 3200 m³ / h and 3600 m³ / h are considered as higher candidate ventilation rates, because For concentrations greater than 500 mg and not greater than 750 mg, a test load node of 750 mg is selected from the load release relationship. The exhaust risk judgment concentrations of 3200 m³ / h and 3600 m³ / h are re-derived to be 13.320 mg / m³ and 15.408 mg / m³, respectively. Both are higher than the hydrogen sulfide exhaust outlet concentration limit of 12.000 mg / m³ specified in the project operation control record. Therefore, no higher executable ventilation range is formed and the auxiliary air handling condition is switched to. If the newly formed executable ventilation range contains a higher candidate ventilation, then return to step one to rearrange the higher candidate ventilation and continue to perform step-by-step adjustment. When no executable ventilation range exists, the most recent synchronous data unit in the synchronous operation sequence, whose indoor pressure is within the design pressure range, is selected. The opening of the exhaust regulating valve in this synchronous data unit is maintained, and the auxiliary air handling unit, which is connected in series downstream of the main air handling unit, is started. Specifically, when no higher executable ventilation range is formed, the equipment operation records with indoor pressure within the design pressure range of -35 to -15 Pa are retrieved from the current moment backward along the synchronous operation sequence. The record with the timestamp closest to the current moment is used as the valve position holding record. The most recent record retrieved for example includes an exhaust regulating valve opening of 58%, an actual ventilation rate of 2816 m³ / h, and an indoor pressure of -22 Pa. Therefore, the exhaust regulating valve is maintained at 58% opening, and the activated carbon-impregnated air treatment unit for hydrogen sulfide removal is started via the controller's start / stop interface. The treatment flow rate calibration range of this auxiliary air treatment unit is 2600–3300 m³ / h, derived from the equipment performance calibration record. The current actual ventilation rate of 2816 m³ / h falls within this range. The equipment performance calibration record also records the minimum stable removal ratio of hydrogen sulfide. The value is 0.90, which is the lowest value among the repeated calibration results within the same processing flow range. After startup, the start-stop feedback and processing flow feedback of the auxiliary air handling unit are collected at a frequency of 1Hz. When the start-stop feedback is continuously in the start state and the processing flow within a complete 5-second synchronous data unit is between 2600 and 3300 m³ / h, the start time of the synchronous data unit is taken as the starting point of the effective processing section. In this embodiment, the processing flow of 2760 to 2790 m³ / h is obtained 15 seconds after the start command is issued, and an effective processing section is formed. The exhaust regulating valve is kept at the opening that has passed the pressure verification to complete the connection of the auxiliary air handling unit. The auxiliary air handling unit is set in series downstream of the main air handling unit. The processing flow feedback of both the main air handling unit and the auxiliary air handling unit must fall within the corresponding segment calibration range with the actual ventilation of the exhaust outlet at the same time. If any device does not meet the requirements, the lowest combined removal ratio in series is not used. After the start / stop status, treatment intensity, and treatment flow rate of the main air handling unit and the auxiliary air handling unit are matched with the same series operation calibration conditions, the concentration and ventilation rate of gaseous target pollutants at the polluted air collection port, the inlet of the main air handling unit, and the exhaust port, as well as the position of the exhaust regulating valve, indoor pressure, and the operation feedback of the main air handling unit and the auxiliary air handling unit, are connected to the synchronous operation sequence. The total removal capacity of the two air handling units is verified according to the minimum combined removal ratio. The pollution load to be released, the record of the risk of exceeding the standard, and the executable ventilation range are regenerated. Specifically, 12 consecutive 5-second synchronous data units are collected to form a 60-second verification period. This verification period is the same as the extrapolation duration used for the load release relationship. During this period, the pollutant inflow is 252.000 mg and the pollutant outflow is 84.480 mg. Based on the gaseous target pollutant concentration and treatment flow rate at the inlet of the main air handling unit, the pollutant inflow of the main air handling unit is accumulated to be 376.640 mg. According to the minimum stable removal ratio of the main air handling unit... Calculate the removal capacity of the main air handling unit using a ratio of 0.80, resulting in 376.640 × 0.80 = 301.312 mg. Subtract the removal capacity of the main air handling unit from the inlet pollutant quantity, resulting in the pollutant quantity flowing through the auxiliary air handling unit: 376.640 - 301.312 = 75.328 mg. Based on the minimum stable removal ratio of the auxiliary air handling unit... =0.90 to calculate the removal capacity of the auxiliary air handling unit, resulting in 75.328 × 0.90 = 67.795 mg; the total pollutant removal capacity during the verification period is 301.312 + 67.795 = 369.107 mg, according to Update the pollution load to be released, and obtain = 463.527mg, select from the load-release relationship not less than And with The closest test load node of 500mg, at which the highest segmented release at 3200m³ / h is 34.000mg, is the minimum stable removal ratio of the main air handling unit. The minimum stable removal ratio of the auxiliary air handling unit is 0.80. The value is 0.90. When the start-up and shutdown status, processing intensity, and processing flow rate of both devices are matched with the same series operation calibration conditions, according to... Calculate the minimum combined removal ratio to obtain =0.98. Based on the highest mass flow rate at the collection port of 4.2 mg / s, the continuous inflow over a 5-second cycle is calculated to be 21.000 mg. The continuous exhaust pollutant volume is 21.000 × (1 - 0.98) = 0.420 mg. The candidate exhaust pollutant mass is 34.000 + 0.420 = 34.420 mg. The exhaust volume formed within 5 seconds by a candidate ventilation rate of 3200 m³ / h is 3200 × 5 ÷ 3600 = 4.444 m³. The exhaust risk assessment concentration is 34.420 ÷ 4.444 = 7.746 mg / m³, which is lower than 12.000 mg / m³. The exhaust outlet concentration limit and the pressure variation range of -31 to -25 Pa at the 3200 m³ / h setting are within the design pressure range. Therefore, the executable ventilation range [3200, 3200] m³ / h is re-established and the next step-by-step adjustment is initiated. After on-site execution, the actual ventilation volume is 3210 m³ / h, the indoor pressure is -28 Pa, and the highest concentration of hydrogen sulfide at the exhaust outlet is 7.520 mg / m³. The measured concentration does not exceed the exhaust risk judgment concentration of 7.746 mg / m³, thus completing the closed-loop control of step-by-step adjustment, operation feedback, risk verification, auxiliary air treatment start-up, and executable range regeneration.

[0033] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for adjusting the ventilation volume of polluted air in garbage and bedding rooms based on the risk of exceeding standards, characterized in that, include: The concentration and ventilation of gaseous target pollutants at the stale air collection point, main air handling unit inlet and exhaust outlet of the garbage and clothing room are collected, along with the exhaust regulating valve position, indoor pressure and main air handling unit operation feedback, to form a synchronous operation sequence. A normal ventilation baseline is established based on the opening degree of the exhaust regulating valve and the actual ventilation volume under normal ventilation conditions. The flow restriction time period is divided from the synchronous operation sequence according to the changes in the current exhaust regulating valve opening degree and the actual ventilation volume relative to the normal ventilation baseline. Using the distance from the polluted air collection point to the exhaust outlet as the mass balance line, the pollution load to be released is generated based on the amount of pollutants entering, the amount of pollutants being discharged, and the verified amount of pollutants removed during the restricted flow period. The calibration ventilation level, which is higher than the current ventilation level but not higher than the normal ventilation level in the normal ventilation benchmark, is selected from the ventilation regulating valve opening and ventilation volume calibration records as the candidate ventilation volume. Based on the pollution load to be released, the load release relationship formed by the ventilation recovery test after flow restriction, the lowest stable removal ratio obtained by the main air handling unit under the calibration conditions matching the candidate ventilation volume, and the periodic exhaust volume, the exhaust risk judgment concentration is generated. The concentration of exhaust risk assessment is compared with the exhaust outlet concentration limit of gaseous target pollutants to form the risk status of exceeding the standard for candidate ventilation volume; Based on the risk status of exceeding the limit of candidate ventilation volume and the ventilation volume and pressure verification records formed during the equipment commissioning phase, calibrated candidate ventilation volumes that have passed both risk verification and pressure verification are selected to form an executable ventilation volume range. When there is an executable ventilation range, the exhaust regulating valve is adjusted step by step according to the calibrated candidate ventilation range within the range; when there is no executable ventilation range, the exhaust regulating valve opening is maintained at the qualified pressure and the auxiliary air handling unit set in series downstream of the main air handling unit is started.

2. The method for adjusting the ventilation volume of polluted air in a garbage and bedding room based on the risk of exceeding standards, as described in claim 1, is characterized in that... The formation of a synchronized running sequence includes: Periodic sampling is performed using pollutant sensors and flow sensors at the sampling sections of the turbid air collection port, the main air handling unit inlet, and the exhaust port of the garbage and clothing room to generate collection port sampling records, main air handling unit records, and exhaust port sampling records. Under a unified control clock, the system collects feedback on the position of the exhaust regulating valve, indoor pressure, start / stop of the main air handling unit and auxiliary air handling unit, treatment intensity, and treatment flow rate to generate equipment operation records. Based on the pre-calibrated response delay correction of the acquisition link, the time stamps of the collection port sampling record, main air handling record, exhaust port sampling record and pressure feedback are retained, and the control event times of exhaust regulating valve position feedback, main air handling unit operation feedback and auxiliary air handling unit operation feedback are retained. According to the corrected timestamps and control event times, the collection port sampling records, main air handling records, exhaust port sampling records and equipment operation records are collected and combined into synchronous data units within the same ventilation volume adjustment cycle, and a synchronous operation sequence is generated in chronological order.

3. The method for adjusting the ventilation volume of polluted air in a garbage and bedding room based on the risk of exceeding standards, as described in claim 1, is characterized in that... A normal ventilation baseline is established based on the opening degree of the exhaust regulating valve and the actual ventilation volume under normal ventilation conditions. The flow restriction time period is then divided from the synchronous operation sequence according to the changes in the current exhaust regulating valve opening and actual ventilation volume relative to the normal ventilation baseline. Select the opening degree of the exhaust regulating valve and the actual ventilation volume from the continuous operation records marked as normal ventilation conditions during the equipment commissioning phase, and generate a normal ventilation baseline record containing normal ventilation opening degree and normal ventilation volume. A flow restriction start record is generated when the opening of the exhaust regulating valve is lower than the normal ventilation opening and the actual ventilation volume is lower than the normal ventilation volume after the exhaust regulating valve has completed its operation. Starting from the initial record of flow restriction, a flow restriction operation subsequence is generated by continuing synchronous data units where the opening of the exhaust regulating valve is lower than the normal ventilation opening. When the opening of the exhaust regulating valve and the actual ventilation volume return to the range defined by the normal ventilation reference record, a flow restriction termination boundary is generated. If they have not yet returned to normal, the current end of the synchronous operation sequence is used as the temporary termination boundary to form a flow restriction period.

4. The method for adjusting the ventilation volume of polluted air in a garbage and bedding room based on the risk of exceeding standards, as described in claim 1, is characterized in that... The formation of pollutant inflow and outflow during the restricted flow period includes: According to the type of gaseous target pollutant and the sampling section, the collection port sampling records and exhaust port sampling records in the flow restriction operation subsequence are collected to form a unified concentration and ventilation record under the metering status. The concentration of gaseous target pollutants and the ventilation rate within the same synchronous data unit are combined to generate pollutant mass flow rate records on the inlet and outlet sides. The pollutant mass flow rate records from the inlet and outlet sides are collected separately along the flow restriction period to generate a flow restriction pollutant circulation record that includes the amount of pollutants entering and exiting.

5. The method for adjusting the ventilation volume of polluted air in a garbage and bedding room based on the risk of exceeding standards, as described in claim 4, is characterized in that... The generation of pollution loads to be released includes: Based on the start-stop feedback, treatment intensity feedback and treatment flow feedback of the main air handling unit, the treatment operation segment is divided. The treatment operation segment whose start-stop status, treatment intensity and treatment flow are all matched with the same air handling performance calibration conditions and whose operation status is continuous is regarded as the effective treatment segment. The lowest stable removal ratio of gaseous target pollutants within the effective treatment zone is selected from the air treatment performance calibration records. The normal ventilation concentration range is formed by the continuous and effective records of the concentration of gaseous target pollutants at the exhaust vent under normal ventilation conditions. The simulation duration is the total time covered from the start of ventilation resumption until the exhaust vent concentration enters the normal ventilation concentration range for two consecutive ventilation volume adjustment cycles. The lowest stable removal ratio is formed by the proportion of pollutants removed during the air treatment performance calibration period that did not return to the exhaust duct within the same verification duration as the simulation duration to the amount of pollutants before treatment. The amount of pollutants flowing through the main air handling unit is determined based on the concentration of gaseous target pollutants at the inlet of the main air handling unit within the effective treatment section and the treatment flow rate. The product of the amount of pollutants flowing through the main air handling unit and the minimum stable removal ratio is used as the amount of pollutants removed, and a pollutant removal record is generated. If a minimum stable removal ratio matching the effective treatment section is not obtained, the amount of pollutants removed in the effective treatment section is recorded as zero. The non-negative residual amount, after deducting the pollutant discharge amount and the verified pollutant removal amount from the pollutant inflow amount, is taken as the pollution load to be released relative to the flow restriction starting point.

6. The method for adjusting the ventilation volume of polluted air in a garbage and bedding room based on the risk of exceeding standards, as described in claim 1, is characterized in that... Establishing the load release relationship based on a pre-tested ventilation recovery following flow restriction includes: When the types of gaseous target pollutants remain unchanged, and the start-stop status, treatment intensity, and treatment flow rate of the main air handling unit are consistent with the air handling performance calibration conditions that match the calibration ventilation level, the ventilation test is resumed after flow restriction is implemented according to the test load node and calibration ventilation level. From the moment ventilation is restored, the concentration of gaseous target pollutants and ventilation volume at the turbid air collection port, the inlet of the main air handling unit and the exhaust port are continuously collected, as well as the position of the exhaust regulating valve, indoor pressure and the operation feedback of the main air handling unit, to generate a ventilation restoration test sequence. The continuous exhaust pollutant quantity is formed based on the pollutant inflow and the verified pollutant removal quantity in the ventilation test sequence. The non-negative residual quantity after deducting the continuous exhaust pollutant quantity from the pollutant discharge quantity is arranged according to the ventilation volume adjustment cycle to generate a load release sequence. Based on the types of gaseous target pollutants, test load nodes, and actual ventilation volumes, load release sequences are collected. The highest segment release volume within each ventilation volume adjustment cycle in repeated tests is selected. Then, the highest segment release volume of the same actual ventilation volume and the same ventilation volume adjustment cycle is corrected by performing cumulative maximum value correction along the increasing direction of the test load nodes to establish the load release relationship.

7. A method for adjusting the ventilation volume of polluted air in a garbage and bedding room based on the risk of exceeding standards, as described in claim 6, is characterized in that... The exhaust risk assessment concentrations for generating candidate ventilation volumes include: Select a calibration ventilation level that is higher than the current ventilation volume but not higher than the normal ventilation volume from the ventilation regulating valve opening and ventilation volume calibration records to generate a candidate ventilation volume sequence. From the load release relationship that has been monotonically corrected by the test load node, select the test load node that is not less than the current pollution load to be released and is closest to it, and obtain the release upper limit sequence under the candidate ventilation rate. If there is no test load node that meets the conditions, mark it as an uncalibrated candidate quantity. Based on the highest pollutant mass flow rate at the polluted air collection port during the flow restriction period, the lowest stable removal ratio and release upper limit sequence obtained by the main air handling unit under the calibration conditions of matching candidate ventilation volume, a candidate exhaust pollutant mass sequence is generated. Based on the exhaust volume formed by the candidate ventilation volume during the ventilation adjustment cycle, the candidate exhaust pollutant mass sequence is converted into an exhaust concentration sequence, and the highest concentration is selected as the exhaust risk determination concentration.

8. The method for adjusting the ventilation volume of polluted air in a garbage and bedding room based on the risk of exceeding standards, as described in claim 7, is characterized in that... The concentration of the exhaust risk assessment is compared with the exhaust outlet concentration limit of the gaseous target pollutant to generate an exceedance risk record that includes candidate ventilation volume and pollutant exceeding the standard. Based on the exhaust control standards implemented at the exhaust outlets, an exhaust outlet concentration limit record is generated, which includes the gaseous target pollutants, the exhaust outlet concentration limit, and the metering status. The exhaust risk assessment concentration under the candidate ventilation rate is compared with the exhaust outlet concentration limit of the gaseous target pollutant, and pollutants exceeding the standard and those not exceeding the standard are marked respectively. Excessive pollutants are collected according to candidate ventilation volumes, and excess risk records are generated. Candidate ventilation volumes that have completed risk verification and do not contain excessive pollutants are generated into records without excess risk. Uncalibrated candidate volumes are marked as risk unverified.

9. A method for adjusting the ventilation volume of polluted air in a garbage and bedding room based on the risk of exceeding standards, as described in claim 1, is characterized in that... Candidate ventilation volumes that do not pose a risk of exceeding limits and whose indoor pressure is within the design pressure range are selected to form an executable ventilation volume range that includes only the calibrated candidate ventilation volumes, including: Based on the ventilation volume and indoor pressure records covering the allowable operating conditions of the equipment during the equipment commissioning phase, a ventilation volume and pressure verification record containing the pressure variation range is formed. Match candidate ventilation volumes with ventilation and pressure verification records to generate pressure qualified records, pressure limited records, or pressure unverified records. Candidate ventilation volumes with no records of exceeding risk limits and qualified pressure records are classified as executable candidate records; Select the record from the executable candidate records that is higher than the current ventilation volume and has the smallest difference from the current ventilation volume as the starting point of the interval. Then, gather the executable candidate records that are consecutively adjacent from the starting point of the interval along the increasing order of candidate ventilation volume into an executable ventilation volume interval. If there is no executable candidate record, generate a record with no executable interval.

10. A method for adjusting the ventilation volume of polluted air in a garbage and bedding room based on the risk of exceeding standards, as described in claim 9, is characterized in that... The exhaust regulating valve is controlled according to the executable ventilation range, or the auxiliary air handling unit installed in series downstream of the main air handling unit is activated, including: When there is an executable ventilation range, the candidate ventilation volumes within the range that are higher than the current ventilation volume are arranged in ascending order to generate a step-by-step adjustment sequence; The exhaust regulating valve is activated based on the first candidate ventilation volume in the step-by-step adjustment sequence, so that the actual ventilation volume is kept within the calibration range of the candidate ventilation volume for at least one complete ventilation volume adjustment cycle. The concentrations and ventilation volumes of gaseous target pollutants collected from the polluted air collection port, the main air handling unit inlet, and the exhaust port after adjustment, as well as the exhaust regulating valve position, indoor pressure, and main air handling unit operation feedback, are integrated into the synchronous operation sequence to regenerate the pollution load to be released, the record of exceeding the standard risk, and the executable ventilation volume range; if there is a higher candidate ventilation volume, the adjustment is repeated. When there is no executable ventilation range, select the synchronous data unit that is closest in time and whose indoor pressure is within the design pressure range from the synchronous operation sequence, maintain the opening of the exhaust regulating valve in the synchronous data unit, and start the auxiliary air handling unit that is connected in series downstream of the main air handling unit. After the start-stop status, treatment intensity, and treatment flow of the main air handling unit and the auxiliary air handling unit are matched with the same series operation calibration conditions, the gaseous target pollutant concentration and ventilation volume of the polluted air collection port, the inlet of the main air handling unit, and the exhaust port, as well as the exhaust regulating valve position, indoor pressure, operation feedback of the main air handling unit, and operation feedback of the auxiliary air handling unit are connected to the synchronous operation sequence. The total removal capacity of the two air handling units is verified according to the minimum joint removal ratio, and the pollution load to be released, the record of exceeding the standard risk, and the executable ventilation volume range are regenerated.

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