A digital intelligent control system for sewage treatment facilities

Abstract

The present invention discloses a digital intelligent control system for sewage treatment facilities, which belongs to the technical field of sewage treatment, and includes a regulating tank for pumping sewage into sewage treatment equipment; sewage treatment equipment for treating sewage; a monitoring module for acquiring relevant parameter information related to sewage; an analysis module for analyzing according to relevant parameter information, and generating liquid level value, aeration time value and agent dosage value respectively; an evaluation module for performing abnormal evaluation and generating adjustment instructions according to liquid level value, aeration time value and agent dosage value; and an execution module for executing various generated adjustment instructions. The present invention predicts the pollutant concentration of each process module of the sewage treatment equipment through an agent dosage evaluation unit, and adaptively adjusts the agent dosage of each process module according to the pollutant concentration combined with the pollutant concentration of the effluent water quality, which can not only improve the effectiveness of biological purification, but also avoid excessive dosage of biological agents.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and specifically relates to a digital intelligent control system for sewage treatment facilities. Background Art

[0002] With the increasing shortage of global water resources and the enhancement of environmental protection awareness, people are paying more and more attention to the recycling and treatment of water resources. By treating sewage, harmful substances in sewage can be removed, thereby significantly improving water quality, reducing pollution to natural water bodies such as rivers, lakes and oceans, and preventing pollutants from entering drinking water sources, ensuring the safety of drinking water for residents.

[0003] When existing equipment treats sewage, it mostly adopts fixed aeration mode operation and manual on-site addition of microbial agents to treat sewage. However, it is affected by many external factors. For example, the sewage discharge is different in different seasons and different water use time periods. If fixed aeration and fixed addition of microbial agents are used for sewage treatment, when faced with sudden high-concentration sewage inflow, there will be insufficient aeration time and insufficient microbial addition, resulting in substandard effluent water quality. When faced with sudden low-concentration sewage inflow, it will cause excessive aeration and excessive agent addition, resulting in a waste of resources. Summary of the invention

[0004] The purpose of the present invention is to provide a digital intelligent control system for sewage treatment facilities to solve the problems faced in the above-mentioned background technology.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A digital intelligent control system for sewage treatment facilities, the control system comprising:

[0007] A regulating tank, wherein a pump is provided in the regulating tank for pumping sewage into the sewage treatment equipment;

[0008] Sewage treatment equipment, which is used to treat sewage and has an anaerobic zone, an anoxic zone, an aerobic zone and a sedimentation zone;

[0009] A monitoring module, the monitoring module is used to obtain relevant parameter information related to sewage, the monitoring module includes a liquid level monitoring unit, an inlet water quality monitoring unit, an inlet flow monitoring unit and an outlet water quality monitoring unit, the liquid level monitoring unit is used to monitor the liquid level of the regulating tank, the inlet water quality monitoring unit is used to obtain the water quality parameters of sewage entering the sewage treatment equipment, the inlet flow monitoring unit is used to obtain the sewage flow entering the sewage treatment equipment, and the outlet water quality monitoring unit is used to obtain the water quality parameters of the treated sewage;

[0010] An analysis module, which is used to store the acquired relevant parameter information, and to analyze the relevant parameter information to generate a liquid level value, an aeration time value, and a reagent dosage value;

[0011] An evaluation module, wherein a liquid level condition evaluation unit, an aeration time evaluation unit, and a reagent dosage evaluation unit are provided in the evaluation module. The liquid level condition evaluation unit determines whether the liquid level in the regulating tank is normal according to the size of the generated liquid level value, and generates a liquid level adjustment instruction when it is abnormal; the aeration time evaluation unit determines whether the aeration time set for the sewage treatment equipment is normal according to the size of the generated aeration duration value, and generates an aeration time adjustment instruction when it is abnormal; the reagent dosage evaluation unit determines whether the reagent dosage set for the sewage treatment equipment is normal according to the size of the generated reagent dosage value, and generates a reagent dosage adjustment instruction when it is abnormal;

[0012] An execution module is used to execute various generated adjustment instructions.

[0013] Furthermore, the working method of the liquid level status assessment unit is:

[0014] Get the liquid level value in the regulating tank in real time , the liquid level value The liquid level threshold is set To compare:

[0015] when When the liquid level is abnormal, it is judged that the liquid level is abnormal and a liquid level adjustment instruction is generated.

[0016] Furthermore, the working method of the aeration time evaluation unit is:

[0017] Obtain the sewage flow entering the sewage treatment equipment , and simultaneously obtain the water quality parameters of the sewage entering the sewage treatment equipment;

[0018] By formula Get the aeration time value ;

[0019] According to the obtained aeration duration value Determine the optimal aeration duration fluctuation range ;

[0020] Determine the set aeration time Is it within the proposed optimal aeration duration fluctuation range? Inside:

[0021] like When the aeration time set for the sewage treatment equipment is abnormal, it is judged that the aeration time adjustment instruction is generated;

[0022] in, is the time conversion factor, as well as is the preset coefficient, n is the number of water quality items tested, The parameter value obtained for the i-th water quality item, is the weight coefficient of the i-th water quality project, and .

[0023] Furthermore, the working method of the drug administration assessment unit is:

[0024] According to the sewage inlet water quality parameters and water volume, the random forest algorithm is used to predict the pollutant concentrations in the aerobic zone, anoxic zone, and anaerobic zone. , , ;

[0025] The pollutant concentration obtained , , Substitute into the formula The drug delivery value of each area is obtained ,in is the preset medicine delivery function. To obtain the pollutant concentration in each area, is the sewage retention time;

[0026] According to the obtained drug delivery value Draft a fluctuation range for the amount of medicine to be put into use ,when , it is judged that the amount of medicine put into this area is abnormal, and a medicine put-in adjustment instruction is generated, where The set dosage of the drug.

[0027] Furthermore, the working method of the execution module is:

[0028] When the liquid level adjustment instruction is generated, the water pump is controlled to operate. The water pump stops working.

[0029] Furthermore, the working method of the execution module also includes:

[0030] When generating an aeration time adjustment instruction, if , an aeration time increase instruction is generated. At this time, the formula Adjust the aeration time to :

[0031] like , an aeration time reduction instruction is generated. At this time, the formula Adjust the aeration time to :

[0032] in, is the ambient temperature, is the set temperature comparison value, is the sludge age of the sewage treatment equipment, is the set sludge age comparison value, as well as is the preset coefficient.

[0033] Furthermore, the working method of the execution module also includes:

[0034] When generating a medicine delivery adjustment instruction, When , a drug delivery reduction instruction is generated. At this time, the formula Adjust the dosage of the drug to ;

[0035] when , an order to increase the amount of medicine is generated. At this time, the formula Adjust the dosage of the drug to ;

[0036] in, The pollutant concentration obtained by the effluent water quality monitoring unit, It is the preset standard effluent pollutant concentration.

[0037] Beneficial effects of the present invention:

[0038] 1. The present invention monitors the liquid level in the regulating tank in real time and automatically controls the start and stop of the water pump according to the liquid level. In this way, the water pump can maintain efficient operation when the sewage volume is large, and the water pump can be stopped when the sewage volume is small. The water pump can be automatically switched according to the sewage volume, effectively reducing the energy consumption of sewage treatment facilities and reducing the operating costs;

[0039] 2. The present invention uses an aeration time assessment unit to adaptively adjust the aeration time of the equipment according to the water quality parameters and flow conditions of the sewage, thereby achieving precise aeration, ensuring that the sewage treatment equipment meets the discharge standards, and reducing the operating costs of the sewage treatment facilities;

[0040] 3. The present invention predicts the pollutant concentration of each process module of the sewage treatment equipment through a reagent dosage evaluation unit, and adaptively adjusts the reagent dosage of each process module according to the pollutant concentration combined with the pollutant concentration of the effluent water quality, which can not only improve the effectiveness of biological purification, but also avoid excessive dosage of biological agents.

[0041] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0043] Figure 1 is a system block diagram of the present invention;

[0044] Figure 2 It is the working flow chart of the control system of the present invention. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] In one embodiment, a digital intelligent control system for a sewage treatment facility is disclosed. Figure 1 , Figure 2 As shown, the regulatory system includes:

[0047] A regulating tank, in which a pump is provided to pump sewage into the sewage treatment equipment;

[0048] Sewage treatment equipment, which is used to treat sewage and has anaerobic zone, anoxic zone, aerobic zone and sedimentation zone inside;

[0049] Monitoring module, the monitoring module is used to obtain relevant parameter information related to sewage. The monitoring module includes a liquid level monitoring unit, an inlet water quality monitoring unit, an inlet flow monitoring unit and an outlet water quality monitoring unit. The liquid level monitoring unit is used to monitor the liquid level of the regulating tank, the inlet water quality monitoring unit is used to obtain the water quality parameters of sewage entering the sewage treatment equipment, the inlet flow monitoring unit is used to obtain the sewage flow entering the sewage treatment equipment, and the outlet water quality monitoring unit is used to obtain the water quality parameters of the treated sewage;

[0050] The analysis module is used to store the acquired relevant parameter information, and analyze the relevant parameter information to generate the liquid level value, aeration time value and agent dosage value respectively;

[0051] The evaluation module includes a liquid level condition evaluation unit, an aeration time evaluation unit, and a reagent dosage evaluation unit. The liquid level condition evaluation unit determines whether the liquid level in the regulating tank is normal according to the generated liquid level value, and generates a liquid level adjustment instruction when it is abnormal; the aeration time evaluation unit determines whether the aeration time set for the sewage treatment equipment is normal according to the generated aeration time value, and generates an aeration time adjustment instruction when it is abnormal; the reagent dosage evaluation unit determines whether the reagent dosage set for the sewage treatment equipment is normal according to the generated reagent dosage value, and generates a reagent dosage adjustment instruction when it is abnormal;

[0052] The execution module is used to execute various generated adjustment instructions.

[0053] Through the above technical scheme, the present application monitors the liquid level value in the regulating tank in real time, and automatically controls the start and stop of the water pump according to the liquid level value. In this way, the water pump can maintain efficient operation when the sewage volume is large, and can be stopped when the sewage volume is small. The water pump can be automatically switched according to the sewage volume, effectively reducing the energy consumption and operating costs of the sewage treatment facilities; at the same time, the aeration time evaluation unit is used to adaptively adjust the aeration time of the equipment according to the water quality parameters and flow conditions of the sewage, so as to achieve precise aeration, ensure that the sewage treatment equipment meets the emission standards, and reduce the operating costs of the sewage treatment facilities; and the agent dosage evaluation unit is used to predict the pollutant concentration of each process module of the sewage treatment equipment, and the agent dosage of each process module is adaptively adjusted according to the pollutant concentration combined with the pollutant concentration of the effluent water quality, which can not only improve the effectiveness of biological purification, but also avoid excessive dosage of biological agents.

[0054] The working method of the liquid level status assessment unit is: real-time acquisition of the liquid level value in the regulating tank , the liquid level value The level value threshold is set To compare:

[0055] when When the liquid level is abnormal, it is judged that the liquid level is abnormal, and a liquid level adjustment instruction is generated;

[0056] When the liquid level adjustment instruction is generated, the water pump is controlled to operate. The water pump stops working.

[0057] The above scheme provides a specific method for controlling the operation of the water pump according to the liquid level. Due to the influence of external factors, such as the evening period in summer, the amount of sewage may increase significantly in a short period of time, and the amount of sewage generated at night will decrease. In order to reasonably use the sewage treatment equipment and reduce its energy consumption, the liquid level value in the regulating tank is obtained in real time. , the liquid level value The level value threshold is set Compare, liquid level threshold It can be determined based on historical data and experience. When the sewage flow is large, it means that the liquid level is abnormal. In order to ensure that the sewage can be treated well, the pump is controlled to operate. The pump of the sewage treatment facility starts automatically. When the pump stops working, it can avoid the problem of idling of sewage treatment facilities due to high energy consumption and insufficient water intake caused by the automatic continuous operation of the pump.

[0058] The working method of the aeration time evaluation unit is: obtain the sewage flow entering the sewage treatment equipment , and simultaneously obtain the water quality parameters of the sewage entering the sewage treatment equipment;

[0059] By formula Get the aeration time value ;

[0060] According to the obtained aeration duration value Determine the optimal aeration duration fluctuation range ;

[0061] Determine the set aeration time Is it within the proposed optimal aeration duration fluctuation range? Inside:

[0062] like When the aeration time set for the sewage treatment equipment is abnormal, it is judged that the aeration time adjustment instruction is generated;

[0063] in, is the time conversion factor, as well as is the preset coefficient, n is the number of water quality items tested, The parameter values ​​obtained for the i-th water quality item, is the weight coefficient of the i-th water quality project, and ;

[0064] When generating an aeration time adjustment instruction, if , an aeration time increase instruction is generated. At this time, the formula Adjust the aeration time to :

[0065] like , an aeration time reduction instruction is generated. At this time, the formula Adjust the aeration time to ;

[0066] in, is the ambient temperature, is the set temperature comparison value, is the sludge age of the sewage treatment equipment, is the set sludge age comparison value, as well as is the preset coefficient.

[0067] The above technical solution provides a method for adjusting the aeration time. First, an initial aeration time is set. , and then obtain the sewage flow entering the sewage treatment equipment , and at the same time obtain the sewage quality parameters entering the sewage treatment equipment, through the formula Get the aeration time value From the formula, we can see that when the sewage inflow rate is larger or the pollutant concentration of the sewage is higher, the aeration time is longer. Therefore, when deriving the aeration time value Then the optimal aeration duration fluctuation range was determined based on experience. , and then set the aeration time And formulate the optimal aeration time fluctuation range For comparison, if When the aeration time set by the sewage treatment equipment is abnormal, an aeration time adjustment instruction is generated to adjust the aeration time. The adjustment time can be divided into an aeration time increase instruction and an aeration time reduction instruction. , it means that the aeration time set at this time is too short. In order to better treat the sewage, the aeration time needs to be increased. Then an aeration time increase instruction is generated, and the formula Adjust the aeration time to , it can be seen that when the aeration time is The smaller the value, the more aeration time needs to be increased, and the aeration time is related to factors such as sludge age and temperature. Generally speaking, the higher the temperature and the longer the sludge age, the higher the activity of microorganisms. Therefore, taking factors such as sludge age and temperature into consideration, the aeration time can be adjusted more accurately. Similarly, when , it means that the aeration time set at this time is too much, and the aeration time needs to be reduced. Then an aeration time reduction instruction is generated, and the formula Adjust the aeration time to Through the above scheme, it is possible to determine whether the set aeration time is reasonable based on the sewage flow rate and sewage concentration, so as to adaptively adjust the aeration time based on factors such as sludge age and temperature, thereby ensuring that the sewage treatment equipment meets the emission standards while avoiding the increase in the operating energy consumption of the sewage treatment equipment caused by excessive aeration, and effectively reducing the operating cost of the sewage treatment equipment.

[0068] It should be noted that water quality parameters can be obtained through the installed water quality detector, and the time conversion coefficient , preset coefficient as well as , weight coefficients of each water quality item , preset coefficient as well as , temperature comparison value , sludge age comparison value Etc. can be formulated based on the equipment's operating data combined with empirical data, so I will not go into details here.

[0069] The working method of the agent placement evaluation unit is: according to the sewage inlet water quality parameters and water inlet volume, the random forest algorithm is used to predict the pollutant concentrations in the aerobic zone, anoxic zone, and anaerobic zone respectively. , , ;

[0070] The pollutant concentration obtained , , Substitute into the formula The drug delivery value of each area is obtained ,in is the preset medicine delivery function. To obtain the pollutant concentration in each area, is the sewage retention time;

[0071] According to the obtained drug delivery value Draft a fluctuation range for the amount of medicine to be put into use ,when , it is judged that the amount of medicine put into this area is abnormal, and a medicine put-in adjustment instruction is generated, where For the set dosage of medicine, when the medicine dosage adjustment instruction is generated, When , a drug delivery reduction instruction is generated. At this time, the formula Adjust the dosage of the drug to ;

[0072] when , an order to increase the amount of medicine is generated. At this time, the formula Adjust the dosage of the drug to ;

[0073] in, The pollutant concentration obtained by the effluent water quality monitoring unit, It is the preset standard effluent pollutant concentration.

[0074] The above technical solution provides a specific method for adjusting the dosage of the drug. First, an initial dosage of the drug is set according to the historical operation data. Then, according to the sewage inlet water quality parameters and inlet volume, the random forest algorithm is used to predict the pollutant concentrations in the aerobic zone, anoxic zone, and anaerobic zone. , , , and then the obtained pollutant concentration , , Substitute into the formula The required dosage value for each area is obtained , and according to the drug delivery value Draft a fluctuation range for the amount of medicine to be put into use , and finally the set dosage of the drug And the proposed fluctuation range of drug dosage For comparison, when When the amount of reagents set in the area is judged to be unqualified, a reagent adjustment instruction is generated. Generally speaking, the sewage retention time The longer the time, the better the purification effect, the smaller the amount of reagent required, and the greater the pollutant concentration, the more reagent required. Therefore, the formula It can more accurately judge whether the dosage of medicine set in each zone is reasonable, so as to adjust the dosage in time; when it becomes a medicine dosage adjustment instruction, it includes a medicine dosage reduction instruction and a medicine dosage increase instruction. , it means that the set dosage of medicine is too much, then the instruction of reducing medicine dosage is generated, and the formula Adjust the dosage of the drug to , it can be seen from the formula that when The larger the value, the more the dosage needs to be reduced. The amount of the agent is also related to the pollutant concentration in the final effluent water. When the pollutant concentration in the effluent water is less than the set standard effluent pollutant concentration, it means that the treatment effect is good, and the amount of the agent can be appropriately reduced. It can be seen from the formula that when The smaller the value, the more the amount of medicine needs to be reduced. Finally, through the formula Adjust the dosage of the drug to ; Similarly when , it means that the set dosage of medicine is too small, then the instruction of increasing dosage is generated, and the formula Adjust the dosage of the drug to , the formula shows that when the difference The bigger, or The larger the value, the more the amount of medicine needs to be added. Finally, through the formula Adjust the dosage of the drug to ; In actual use, the amount of each microbial agent can be automatically and finely controlled through the flow meter and solenoid valve. That is, when facing different polluted water qualities, the amount of each microbial agent can be finely controlled to improve the purification effect and avoid the waste of microbial agents. By predicting the pollutant concentration of each process module of the sewage treatment equipment, the amount of agent added to each process module can be adaptively adjusted according to the pollutant concentration combined with the pollutant concentration of the effluent water quality, which can not only improve the effectiveness of biological purification, but also avoid excessive addition of biological agents.

[0075] It should be noted that the preset drug delivery function The preset standard effluent pollutant concentration can be obtained after training based on historical data. It can be determined based on empirical data.

[0076] At the same time, the analysis module can also use the LSTM neural network algorithm to predict the daily cumulative water inflow of the sewage treatment equipment in the next 1-3 days based on rainfall and historical water inflow. When the predicted daily cumulative water inflow exceeds the maximum processing capacity of the sewage treatment equipment by 70%-80%, an early warning can be issued to remind the operation and maintenance personnel to clean up debris in the grilles, sedimentation tanks and other parts in time to prevent clogging of the sewage treatment facilities.

[0077] The above contents are merely examples and explanations of the concept of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A digital intelligent control system for sewage treatment facilities, characterized in that: The control system comprises: A regulating tank, wherein a pump is provided in the regulating tank for pumping sewage into the sewage treatment equipment; Sewage treatment equipment, which is used to treat sewage and has an anaerobic zone, an anoxic zone, an aerobic zone and a sedimentation zone; A monitoring module, the monitoring module is used to obtain relevant parameter information related to sewage, the monitoring module includes a liquid level monitoring unit, an inlet water quality monitoring unit, an inlet flow monitoring unit and an outlet water quality monitoring unit, the liquid level monitoring unit is used to monitor the liquid level of the regulating tank, the inlet water quality monitoring unit is used to obtain the water quality parameters of sewage entering the sewage treatment equipment, the inlet flow monitoring unit is used to obtain the sewage flow entering the sewage treatment equipment, and the outlet water quality monitoring unit is used to obtain the water quality parameters of the treated sewage; An analysis module, which is used to store the acquired relevant parameter information, and to analyze the relevant parameter information to generate a liquid level value, an aeration time value, and a reagent dosage value; An evaluation module, wherein a liquid level condition evaluation unit, an aeration time evaluation unit, and a reagent dosage evaluation unit are provided in the evaluation module. The liquid level condition evaluation unit determines whether the liquid level in the regulating tank is normal according to the size of the generated liquid level value, and generates a liquid level adjustment instruction when it is abnormal; the aeration time evaluation unit determines whether the aeration time set for the sewage treatment equipment is normal according to the size of the generated aeration duration value, and generates an aeration time adjustment instruction when it is abnormal; the reagent dosage evaluation unit determines whether the reagent dosage set for the sewage treatment equipment is normal according to the size of the generated reagent dosage value, and generates a reagent dosage adjustment instruction when it is abnormal; An execution module, the execution module is used to execute various generated adjustment instructions; The working method of the aeration time evaluation unit is: obtain the sewage flow entering the sewage treatment equipment , and simultaneously obtain the water quality parameters of the sewage entering the sewage treatment equipment; By formula Get the aeration time value ; According to the obtained aeration duration value Determine the optimal aeration duration fluctuation range ; Determine the set aeration time Is it within the proposed optimal aeration duration fluctuation range? Inside: like When the aeration time set for the sewage treatment equipment is abnormal, it is judged that the aeration time adjustment instruction is generated; in, is the time conversion factor, as well as is the preset coefficient, n is the number of water quality items tested, The parameter values ​​obtained for the i-th water quality item, is the weight coefficient of the i-th water quality project, and ; The working method of the execution module also includes: when generating an aeration time adjustment instruction, if , an aeration time increase instruction is generated. At this time, the formula Adjust the aeration time to : like , an aeration time reduction instruction is generated. At this time, the formula Adjust the aeration time to : in, is the ambient temperature, is the set temperature comparison value, is the sludge age of the sewage treatment equipment, is the set sludge age comparison value, as well as is the preset coefficient.

2. A digital intelligent control system for sewage treatment facilities according to claim 1, characterized in that: The working method of the liquid level status assessment unit is as follows: Get the liquid level value in the regulating tank in real time , the liquid level value The liquid level threshold is set To compare: when When the liquid level is abnormal, it is judged that the liquid level is abnormal and a liquid level adjustment instruction is generated.

3. A digital intelligent control system for sewage treatment facilities according to claim 1, characterized in that: The working method of the drug delivery assessment unit is as follows: According to the sewage inlet water quality parameters and water volume, the random forest algorithm is used to predict the pollutant concentrations in the aerobic zone, anoxic zone, and anaerobic zone. , , ; The pollutant concentration obtained , , Substitute into the formula , and obtain the drug delivery value for each area ,in is the preset medicine delivery function. To obtain the pollutant concentration in each area, is the sewage retention time; According to the obtained drug delivery value Draft a fluctuation range for the amount of medicine to be put into use when When the amount of medicine put into the area is judged to be abnormal, a medicine put-in adjustment instruction is generated, where The set dosage of the drug.

4. A digital intelligent control system for sewage treatment facilities according to claim 3, characterized in that: The working method of the execution module also includes: When generating a medicine delivery adjustment instruction, When , a drug delivery reduction instruction is generated. At this time, the formula Adjust the dosage of the drug to ; when , an order to increase the amount of medicine is generated. At this time, the formula Adjust the dosage of the drug to ; in, The pollutant concentration obtained by the effluent water quality monitoring unit, It is the preset standard effluent pollutant concentration.

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