A synchronous ex-situ measurement sludge conditioning control system

Through the synchronous sludge conditioning control system, the automatic control of the entire sludge conditioning process is achieved by using a liquid level meter, viscosity online measuring instrument and organic matter measuring instrument, which solves the problem that the termination of the conditioning link cannot be automatically determined in the existing technology, improves the efficiency of sludge conditioning and equipment life, and ensures the health of operators.

CN118724421BActive Publication Date: 2025-09-02BEIJING DRAINAGE GRP CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202410991635.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-07-23
Publication Date
2025-09-02
Estimated Expiration
2044-07-23

AI Technical Summary

Technical Problem

The prior art cannot realize automatic control of the entire process of sludge conditioning, especially the inability to automatically determine the termination of each conditioning link, resulting in frequent manual intervention and operators need to directly contact the sludge and high ammonia environment, affecting occupational health and efficiency.

Method used

A synchronous sludge conditioning control system is designed, including a liquid level meter, viscosity online measuring instrument and organic matter measuring instrument. By measuring the sludge level, viscosity and organic matter content of the sludge, it is possible to automatically control the termination judgment of each conditioning stage, and conduct ectopic monitoring through the proximal measuring material pool to avoid direct contact with the sludge.

Benefits of technology

It realizes automatic control of the entire process of sludge conditioning, improves conditioning efficiency and effect, ensures the occupational health of operators, extends the service life of the equipment, and avoids damage to the instrument by a high pollution and high corrosion environment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN118724421B_ABST
    Figure CN118724421B_ABST
Patent Text Reader

Abstract

The present invention discloses a synchronous ex situ measurement sludge conditioning control system. The control system includes: a first measurement module, a second measurement module and a third measurement module, all of which are electrically connected to a control module, for measuring different sludge target data and sending them to the control module; a proximal measurement tank, which is arranged at the proximal end of the sludge conditioning tank, and the second measurement module and the third measurement module perform measurements through the proximal measurement tank; a control module, which is used to control the operation of each sludge conditioning stage based on the measured sludge target data in the first sludge conditioning operation mode or the second sludge conditioning operation mode. The present invention controls the operation of each sludge conditioning stage by measuring three parameters of the sludge, realizes automatic determination of the termination of each conditioning link, realizes automatic control of the entire sludge conditioning process, avoids direct contact of operators with sludge and high ammonia environment during the sludge conditioning process, can effectively protect occupational health, and at the same time improves the sludge conditioning efficiency and sludge conditioning effect.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention belongs to the technical field of sludge treatment, and more particularly, relates to a synchronous ex-situ measurement sludge conditioning control system. Background Art

[0002] Deep sludge dewatering is the most direct solution to sludge reduction, and plate and frame filter press dewatering is a commonly used mechanical dewatering method. During deep sludge dewatering, sludge conditioning is the first step, transforming the sludge from a highly hydrophilic state to a hydrophobic state to facilitate sludge-water separation during the plate and frame press dewatering process. Currently, sludge conditioning and dewatering process control is primarily performed manually. In practice, variations in sludge quality, plate and frame machinery, and mixing equipment lead to variations in sludge conditioning agent dosage, mixing duration, and endpoint definition. To achieve automated and efficient sludge conditioning, a highly effective sludge conditioning control system is required, enabling precise monitoring of the sludge conditioning process. This approach ensures efficient sludge conditioning, conserves sludge conditioning agents, ensures effective sludge conditioning and dewatering, reduces labor usage, and ultimately improves the technical and economic efficiency of sludge conditioning and dewatering. Chemical conditioning of sludge is usually carried out by a composite conditioning method of inorganic agents + organic flocculants, or a three-step conditioning control method of organic flocculants + inorganic agents + organic flocculants. Therefore, the automatic control system for chemical conditioning of sludge should have the flexibility and universal adaptability of multi-mode operation and control.

[0003] The invention patent with publication number CN115536229A discloses an automatic control system and method for chemical conditioning of advanced anaerobic digestion sludge. The control is based on the parameters obtained by the online sludge solid content meter, the online viscosity meter and the online particle size meter. The parameters obtained by the online sludge solid content meter and the online viscosity meter are used to determine the amount of inorganic salt. The control logic of the online viscometer is as follows: when the parameters obtained by the online viscosity meter have the same viscosity twice and are close to the viscosity of the sand-water mixture with the same solid content, the comparison module sends a signal to be confirmed that the mud conditioning is completed, and finally the termination of the conditioning stage is determined by the particle size and specific surface area. However, it cannot automatically determine the termination of each conditioning link. For example, it cannot automatically determine when to stop feeding mud, and it cannot automatically determine the termination of the intermediate conditioning stage. It still needs to be determined, and automatic control of the entire sludge conditioning process cannot be achieved.

[0004] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to propose a synchronous ex-situ measurement sludge conditioning control system to realize automatic determination of the termination of each conditioning link, realize automatic control of the entire sludge conditioning process, avoid direct contact of operators with sludge and high ammonia environment during the sludge conditioning process, effectively protect occupational health, and at the same time improve sludge conditioning efficiency and sludge conditioning effect.

[0006] To achieve the above objectives, the present invention proposes a synchronous ex-situ measurement sludge conditioning control system, comprising:

[0007] A first measuring module is provided above the sludge conditioning tank, and is used to measure first target data of the sludge in the sludge conditioning tank;

[0008] a second measuring module, disposed at a remote end of the sludge conditioning tank, and configured to measure second target data of the sludge in the sludge conditioning tank;

[0009] a third measuring module, disposed at a remote end of the sludge conditioning tank, and configured to measure third target data of the sludge in the sludge conditioning tank;

[0010] A proximal measurement tank is provided at the proximal end of the sludge conditioning tank, and the second measurement module and the third measurement module measure the second target data and the third target data through the proximal measurement tank;

[0011] a control module, configured to control the operation of each sludge conditioning stage based on the first target data, the second target data, and the third target data in a first sludge conditioning operation mode or a second sludge conditioning operation mode;

[0012] The first measurement module, the second measurement module and the third measurement module are all electrically connected to the control module;

[0013] The proximal measuring tank is connected to the sludge conditioning tank through a feed pipe and a discharge pipe.

[0014] Optionally, the first measuring module is a liquid level meter, the second measuring module is an online viscosity meter, and the third measuring module is an organic matter meter;

[0015] The first target data is the sludge level, the second target data is the sludge viscosity, and the third target data is the sludge organic matter content.

[0016] Optionally, a feed pump, a viscometer probe, and an organic matter analyzer sampling tube are provided in the proximal measuring tank, and the feed pump is connected to the feed tube. In the first sludge conditioning operation mode or the second sludge conditioning operation mode, the sludge in the sludge conditioning tank is continuously introduced into the proximal measuring tank for measurement through the feed pump and the feed tube, and the sludge in the proximal measuring tank is continuously discharged into the sludge conditioning tank through the discharge tube.

[0017] The viscometer probe is electrically connected to the second measurement module, and the organic matter analyzer sampling tube is connected to the third measurement module via a pipeline;

[0018] The effective volume of the proximal test material pool is the pumping volume of the feed pump in 5 to 30 seconds.

[0019] Optionally, the first sludge conditioning operation mode includes:

[0020] preparation stage, inorganic conditioning stage and organic conditioning stage;

[0021] The second sludge conditioning operation mode includes:

[0022] Preparation stage, first organic conditioning stage, inorganic conditioning stage and second organic conditioning stage.

[0023] Optionally, the preparation stage includes:

[0024] The control module determines whether to stop sludge feeding based on the sludge level measured in real time by the liquid level meter. When the sludge level reaches the target level, the control module controls the sludge feeding pump in the sludge conditioning tank to stop feeding sludge, and simultaneously controls the agitator in the sludge conditioning tank to start full-time stirring and timing.

[0025] When the stirring time reaches a set first time, the feed pump is controlled to start, and the second measuring module is controlled to start measuring to obtain an initial sludge viscosity;

[0026] When the second time interval is set, the second measuring module is controlled to start measuring again, and at every third time interval, the second measuring module is controlled to measure, and the third measuring module is controlled to start measuring, so as to obtain the initial sludge organic matter content of the sludge in the sludge conditioning tank, and the control module calculates the dosage of the inorganic agent based on the initial sludge organic matter content;

[0027] When the measurement result of the second measurement module meets the first set condition, the preparation phase ends and the process enters the inorganic conditioning phase or the first organic conditioning phase.

[0028] Optionally, the inorganic conditioning stage comprises:

[0029] The control module controls the dosing system to add inorganic agents to the sludge conditioning tank based on the dosage of the inorganic agents. After the addition is completed, the control module controls the first measuring module to measure the sludge level in real time and record the maximum sludge level and the real-time sludge level of the sludge level falling back after reaching the maximum sludge level. At the same time, the control module controls the second measuring module to measure the sludge viscosity in real time and record the maximum sludge viscosity and the real-time sludge viscosity of the sludge viscosity falling back after reaching the maximum sludge viscosity. When the real-time sludge level and the sludge viscosity meet the second set condition, the inorganic conditioning stage ends and enters the organic conditioning stage or the second organic conditioning stage.

[0030] Optionally, the organic conditioning stage, the first organic conditioning stage and the second organic conditioning stage include:

[0031] The control module controls the dosing system to add the organic agent to the sludge conditioning tank based on the set first organic agent dosage or the second organic agent dosage. After the addition is completed, the control module controls the second measuring module to measure the sludge viscosity in real time and record the maximum sludge viscosity and the real-time sludge viscosity of the sludge viscosity during the process of sludge viscosity falling after reaching the maximum sludge viscosity. When the sludge viscosity meets a third set condition, the organic conditioning stage, the first organic conditioning stage, and the second organic conditioning stage are terminated, and the agitator is turned off or the inorganic conditioning stage is entered;

[0032] The set first organic agent dosage is used for the organic conditioning stage or the first organic conditioning stage, and the set second organic agent dosage is used for the second organic conditioning stage.

[0033] Optionally, the first setting condition includes:

[0034] The sludge viscosity was measured three times in a row and all met the ζ i ≤(1+α0)ζ i+1 ;

[0035] The second setting condition includes:

[0036] Three consecutive times t ≤(1+α inorganic )ζ 基准 , and H t ≤(1+β)H0;

[0037] The third setting condition includes:

[0038] Three consecutive times t ≤(1+α organic )ζ 基准 ;

[0039] Among them iis the sludge viscosity measured for the i-th time, α0 is the allowable variation coefficient of the initial mud identification viscosity, α inorganic is the allowable coefficient of viscosity change after adding inorganic reagents, α organic is the allowable coefficient of variation of viscosity after adding organic reagent, ζ 基准 is the benchmark sludge viscosity, ζ 基准 =(ζ i +ζ i+1 ) / 2;ζ t The real-time sludge viscosity during the process of sludge viscosity falling after reaching the highest sludge viscosity, H t The real-time sludge level in the process of sludge viscosity falling back after reaching the highest sludge viscosity, H0 is the target sludge level, and β is the coefficient of the allowable retained foam layer thickness in the process of sludge viscosity falling back after reaching the highest sludge viscosity.

[0040] Optionally, the calculation expression for the dosage of the inorganic agent is:

[0041] V1=V0+κ(w1-w0) / w0;

[0042] Among them, V0 is the set inorganic agent baseline dosage, w0 is the organic matter content corresponding to the set inorganic agent baseline dosage, w1 is the initial sludge organic matter content, and κ is the response coefficient of the inorganic agent dosage to the change of organic matter content.

[0043] Optionally, it also includes:

[0044] A cleaning module is used for, after the organic conditioning stage or the second organic conditioning stage is completed, the control module controls the cleaning module to clean the viscometer probe and the organic matter analyzer sampling tube in the proximal measurement tank.

[0045] The beneficial effects of the present invention are: from the perspective of automatic control of sludge conditioning, the present invention has developed two automatic sludge conditioning control systems under sludge conditioning operation modes, and controls the operation of each sludge conditioning stage by measuring three parameters of the sludge, thereby realizing automatic judgment of the termination of each conditioning link, and realizing automatic control of the entire sludge conditioning process, thereby avoiding direct contact of operators with sludge and high ammonia environment during the sludge conditioning process, effectively protecting occupational health, and improving sludge conditioning efficiency and sludge conditioning effect; by setting a proximal measurement material pool, synchronous off-situ monitoring of some sludge parameters is realized, effectively avoiding damage to instruments and meters caused by the high pollution and high corrosion environment of the sludge conditioning pool, ensuring the accuracy and timeliness of sludge conditioning detection, and effectively extending the service life of the equipment.

[0046] The system of the present invention has other features and advantages that will be apparent from or will be described in detail in the accompanying drawings and subsequent detailed description incorporated herein, which together serve to explain the specific principles of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, in which like reference numerals generally represent like components.

[0048] Figure 1 A schematic diagram of a synchronous ex-situ measurement sludge conditioning control system according to embodiments 1 and 2 of the present invention is shown. DETAILED DESCRIPTION

[0049] The present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention may be implemented in various forms and is not limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete and to fully convey the scope of the present invention to those skilled in the art.

[0050] A synchronous ex-situ measurement sludge conditioning control system according to the present invention comprises:

[0051] A first measuring module is provided above the sludge conditioning tank, and is used to measure first target data of the sludge in the sludge conditioning tank;

[0052] A second measuring module is provided at a remote end of the sludge conditioning tank, and is used to measure a second target data of the sludge in the sludge conditioning tank;

[0053] a third measuring module, disposed at a remote end of the sludge conditioning tank, and configured to measure third target data of the sludge in the sludge conditioning tank;

[0054] A proximal measurement tank is provided at the proximal end of the sludge conditioning tank, and the second measurement module and the third measurement module measure the second target data and the third target data through the proximal measurement tank;

[0055] a control module, configured to control the operation of each sludge conditioning stage based on the first target data, the second target data, and the third target data in the first sludge conditioning operation mode or the second sludge conditioning operation mode;

[0056] The first measuring module, the second measuring module and the third measuring module are all electrically connected to the control module;

[0057] The proximal measuring tank is connected to the sludge conditioning tank through a feed pipe and a discharge pipe.

[0058] Specifically, the present invention is in the first sludge conditioning operation mode or the second sludge conditioning operation mode, wherein the first sludge conditioning operation mode and the second sludge conditioning operation mode can be selected through a human-computer interaction module electrically connected to the control module. The human-computer interaction module is a conventional setting in the industrial control field and will not be repeated in the present invention. The first measuring module, the second measuring module and the third measuring module respectively measure the three target data of the sludge, and send the measurement results to the control module. The control module controls the operation of each sludge conditioning stage according to the three target data, realizes automatic judgment of the termination of each conditioning link, and realizes automatic control of the entire sludge conditioning process, avoiding direct contact of operators with sludge and high ammonia environment during the sludge conditioning process, which can effectively protect occupational health and improve the sludge conditioning efficiency and sludge conditioning effect; the second measuring module and the third measuring module measure the second target data and the third target data of the sludge through the proximal measuring material tank set at the proximal end of the sludge conditioning tank, realize synchronous ex situ measurement of some sludge parameters, effectively avoid the damage to instruments and meters caused by the high pollution and high corrosion environment of the sludge conditioning tank, ensure the accuracy and timeliness of sludge conditioning detection, and effectively extend the service life of the equipment.

[0059] In one example, the first measuring module is a liquid level meter, the second measuring module is an online viscosity measuring instrument, and the third measuring module is an organic matter measuring instrument;

[0060] The first target data is the sludge level, the second target data is the sludge viscosity, and the third target data is the sludge organic matter content.

[0061] Specifically, the present invention measures the mud level of the sludge in the sludge conditioning tank by a liquid level meter, measures the viscosity of the sludge in the sludge conditioning tank by an online viscosity meter, and measures the organic matter content of the sludge in the sludge conditioning tank by an organic matter meter.

[0062] For example, the liquid level meter can use a radar level meter or an ultrasonic level meter with an accuracy of ±10mm and a detection delay of ≤1s. It is installed above the sludge conditioning tank. The accuracy of the viscosity online meter is ±1% and the detection delay is ≤60s. The organic matter measuring instrument preferably uses an ultraviolet organic matter online detector with a photometric measurement range of 0-200%; a sampling time of ≤20s; an accuracy of ±1%, and a filter membrane with a pore size of 0.2-200μm is installed in the feed pipeline.

[0063] In one example, a feed pump, a viscometer probe, and a sampling tube for an organic matter analyzer are provided in the proximal measuring tank. The feed pump is connected to the feed tube. In the first sludge conditioning operation mode or the second sludge conditioning operation mode, the sludge in the sludge conditioning tank is continuously introduced into the proximal measuring tank through the feed pump and the feed tube for measurement, and the sludge in the proximal measuring tank is continuously discharged into the sludge conditioning tank through the discharge tube.

[0064] The viscometer probe is electrically connected to the second measuring module, and the organic matter analyzer sampling tube is electrically connected to the third measuring module;

[0065] The effective volume of the proximal test material pool is the pumping volume of the feed pump in 5 to 30 seconds.

[0066] Specifically, a feed pump, a viscometer probe and an organic matter meter sampling tube are provided in the proximal measuring material tank, and the feed pump is connected to the feed tube. In the first sludge conditioning operation mode or the second sludge conditioning operation mode, the sludge in the sludge conditioning tank is continuously introduced into the proximal measuring material tank for measurement through the feed pump and the feed tube, and the sludge in the proximal measuring material tank is continuously discharged into the sludge conditioning tank through the discharge pipe. The discharge pipe can be installed on the side wall of the proximal measuring material tank, and the installation height meets the sludge inventory in the proximal measuring material tank meeting the measurement requirements, or it can be installed at the bottom of the proximal measuring material tank, and the height of the pipe wall above the bottom of the material tank meets the measurement requirements. The viscometer probe is electrically connected to the second measuring module, i.e., the online viscosity meter; the sampling tube of the organic matter meter is connected to the third measuring module, i.e., the organic matter meter, through a pipeline, and the sludge in the proximal test material tank is transported to the organic matter meter for measurement, wherein the feed port of the pipeline is provided with a filtering device, for example, a filter membrane with a pore size of 0.2 to 200 μm; the effective volume of the proximal test material tank is the pumping volume of the feed pump in 5 to 30 seconds. Setting a reasonable effective volume can enable the sludge in the proximal test material tank to flow and replace quickly, avoiding the accumulation of sludge in the proximal test material tank and causing inaccurate measurement results, so as to ensure that the measured sludge parameters are synchronized with the actual sludge parameters in the sludge conditioning tank.

[0067] In one example, the first sludge conditioning operating mode includes:

[0068] preparation stage, inorganic conditioning stage and organic conditioning stage;

[0069] The second sludge conditioning operation mode includes:

[0070] Preparation stage, first organic conditioning stage, inorganic conditioning stage and second organic conditioning stage.

[0071] Specifically, the first sludge conditioning operation mode includes a preparation stage, an inorganic conditioning stage and an organic conditioning stage, and the second sludge conditioning operation mode includes a preparation stage, a first organic conditioning stage, an inorganic conditioning stage and a second organic conditioning stage. After the staff sets the organic matter dosage, the first duration, the second duration, the third duration, the initial mud identification viscosity allowable variation coefficient, the viscosity allowable variation coefficient after the addition of each agent, the response coefficient of the agent dosage to the change of organic matter, the inorganic agent baseline dosage and the corresponding organic matter content and other conditioning parameters of each organic conditioning stage, they select the first sludge conditioning operation mode or the second sludge conditioning operation mode to start sludge conditioning, and control the sludge inlet pump in the sludge conditioning tank to feed sludge into the sludge conditioning tank. Among them, each conditioning parameter is the optimal parameter summarized after a large number of experiments, which can improve the sludge conditioning efficiency and ensure the sludge conditioning effect.

[0072] In one example, the preparation phase includes:

[0073] The control module determines whether to stop sludge feeding based on the sludge level measured in real time by the liquid level gauge. When the sludge level reaches the target level, the sludge feeding pump in the sludge conditioning tank is controlled to stop feeding sludge, and the agitator in the sludge conditioning tank is controlled to start full-time stirring and timing.

[0074] When the stirring time reaches the set first time, the feed pump is controlled to start, and the second measuring module is controlled to start measuring to obtain the initial sludge viscosity;

[0075] When the second time interval is set, the second measuring module is controlled to start measuring again, and at every third time interval, the second measuring module is controlled to measure, and the third measuring module is controlled to start measuring, so as to obtain the initial sludge organic matter content of the sludge in the sludge conditioning tank, and the control module calculates the dosage of the inorganic agent based on the initial sludge organic matter content;

[0076] When the measurement result of the second measurement module meets the first set condition, the preparation phase ends and enters the inorganic conditioning phase or the first organic conditioning phase.

[0077] Specifically, in the preparation stage of the first sludge conditioning operation mode or the second sludge conditioning operation mode, the control module determines whether to stop sludge feeding based on the sludge level measured in real time by the liquid level meter. When the sludge level reaches the target level, the sludge feeding pump in the sludge conditioning tank is controlled to stop feeding sludge, thereby realizing the termination judgment of the sludge feeding stage. At the same time, the agitator in the sludge conditioning tank is controlled to start stirring throughout the process and timing. When the stirring time reaches the set first time, the feed pump is controlled to start, and the second measuring module is controlled to start measuring to obtain the initial sludge viscosity. Through the stirring for the first time, the sludge originally deposited at the bottom of the sludge conditioning tank and the newly fed sludge can be fully stirred and evenly mixed, so that the results obtained by subsequent measurements are more accurate; when the interval sets the second time, the second measuring module is controlled to start measuring again, and every third time long, controls the second measuring module to measure, and controls the third measuring module to start measuring, obtains the initial sludge organic matter content of the sludge in the sludge conditioning tank, and the control module calculates the amount of inorganic agent added based on the initial sludge organic matter content; the set second time length is obtained through a large number of experiments, and the second measuring module starts measuring again after the set second time length, which can ensure that the subsequent measurement results meet the first set conditions as soon as possible, avoid frequent viscosity measurements, and extend the service life of the equipment; when the measurement result of the second measuring module meets the first set conditions, the benchmark viscosity is calculated at this time, the preparation stage ends, and enters the inorganic conditioning stage or the first organic conditioning stage. The termination judgment of the preparation stage is realized through the sludge viscosity and the first set conditions, thereby improving the sludge conditioning efficiency and ensuring the sludge conditioning effect.

[0078] In one example, the inorganic conditioning stage includes:

[0079] The control module controls the dosing system to add inorganic agents to the sludge conditioning tank based on the dosage of the inorganic agents. After the addition is completed, the first measuring module is controlled to measure the sludge level in real time and record the maximum sludge level and the real-time sludge level of the sludge level falling back after reaching the maximum sludge level. At the same time, the second measuring module is controlled to measure the sludge viscosity in real time and record the maximum sludge viscosity and the real-time sludge viscosity of the sludge viscosity falling back after reaching the maximum sludge viscosity. When the real-time sludge level and sludge viscosity meet the second set condition, the inorganic conditioning stage ends and enters the organic conditioning stage or the second organic conditioning stage.

[0080] Specifically, inorganic salts are generally used for sludge conditioning in the inorganic conditioning stage. After the first sludge conditioning operation mode system determines that the preparation stage is over, or after the second sludge conditioning operation mode system determines that the first organic conditioning stage is over, the control module controls the dosing system to add inorganic agents to the sludge conditioning tank based on the inorganic agent dosage calculated in the preparation stage. After the addition is completed, the first measuring module is controlled to measure the sludge level in real time and record the highest sludge level and the real-time sludge level of the sludge level falling process after reaching the highest sludge level. The sludge level measured at this time includes the thickness of the foam layer. As the stirring is completed, the sludge level is generated. The foam will slowly disappear after reaching the highest point, causing the measured sludge level to fall back. At the same time, the second measuring module is controlled to measure the sludge viscosity in real time and record the highest sludge viscosity and the real-time sludge viscosity of the sludge viscosity falling process after reaching the highest sludge viscosity. When the real-time sludge level and sludge viscosity meet the second set condition, the inorganic conditioning stage ends and enters the organic conditioning stage or the second organic conditioning stage. The present invention realizes the termination judgment of the inorganic conditioning stage through the sludge level, sludge viscosity and the second set condition, which can shorten the sludge conditioning time in the inorganic conditioning stage, improve the sludge conditioning efficiency and ensure the sludge conditioning effect.

[0081] In one example, the organic conditioning phase, the first organic conditioning phase, and the second organic conditioning phase include:

[0082] The control module controls the dosing system to add the organic agent to the sludge conditioning tank based on the set first organic agent dosage or the second organic agent dosage. After the addition is completed, the control module controls the second measuring module to measure the sludge viscosity in real time and record the maximum sludge viscosity and the real-time sludge viscosity of the sludge viscosity during the process of sludge viscosity falling after reaching the maximum sludge viscosity. When the sludge viscosity meets the third set condition, the organic conditioning stage, the first organic conditioning stage and the second organic conditioning stage are ended, and the agitator is turned off or the inorganic conditioning stage is entered;

[0083] The set first organic agent dosage is used for the organic conditioning stage or the first organic conditioning stage, and the set second organic agent dosage is used for the second organic conditioning stage.

[0084] Specifically, the organic conditioning stage, the first organic conditioning stage and the second organic conditioning stage generally use organic flocculants for sludge conditioning. The control module controls the dosing system to add organic agents to the sludge conditioning tank based on the set first organic agent dosage or the second organic agent dosage. After the addition is completed, the second measuring module is controlled to measure the sludge viscosity in real time and record the maximum sludge viscosity and the real-time sludge viscosity of the sludge viscosity falling process after reaching the maximum sludge viscosity. When the sludge viscosity meets the third set condition, the organic conditioning stage, the first organic conditioning stage and the second organic conditioning stage are ended, and the stirring is turned off. device or enters the inorganic conditioning stage; wherein, the set first organic agent dosage is used for the organic conditioning stage or the first organic conditioning stage, the set second organic agent dosage is used for the second organic conditioning stage, the agitator is turned off at the end of the organic conditioning stage and the second organic conditioning stage, and the first organic conditioning stage is ended to enter the inorganic conditioning stage. The present invention realizes the termination judgment of the organic conditioning stage, the first organic conditioning stage and the second organic conditioning stage through the sludge viscosity and the third set condition, which can shorten the sludge conditioning time of each organic conditioning stage, improve the sludge conditioning efficiency, and ensure the sludge conditioning effect.

[0085] In one example, the first setting condition includes:

[0086] The sludge viscosity was measured three times in a row and all met the ζ i ≤(1+α0)ζ i+1 ;

[0087] The second setting condition includes:

[0088] Three consecutive times t ≤(1+α inorganic )ζ 基准 , and H t ≤(1+β)H0;

[0089] The third setting condition includes:

[0090] Three consecutive times t ≤(1+α organic )ζ 基准 ;

[0091] Among them i is the sludge viscosity measured for the i-th time, α0 is the allowable variation coefficient of the initial mud identification viscosity, α inorganic is the allowable coefficient of viscosity change after adding inorganic reagents, α organic is the allowable coefficient of variation of viscosity after adding organic reagent, ζ 基准 is the benchmark sludge viscosity, ζ 基准 =(ζ i +ζ i+1 ) / 2;ζ tThe real-time sludge viscosity during the process of sludge viscosity falling after reaching the highest sludge viscosity, H t The real-time sludge level in the process of sludge viscosity falling back after reaching the highest sludge viscosity, H0 is the target sludge level, and β is the coefficient of the allowable retained foam layer thickness in the process of sludge viscosity falling back after reaching the highest sludge viscosity.

[0092] In one example, the calculation expression for the dosage of inorganic agent is:

[0093] V1=V0+κ(w1-w0) / w0;

[0094] Among them, V0 is the set inorganic agent baseline dosage, w0 is the organic matter content corresponding to the set inorganic agent baseline dosage, w1 is the initial sludge organic matter content, and κ is the response coefficient of the inorganic agent dosage to the change of organic matter content.

[0095] In one example, it also includes:

[0096] The cleaning module is used to control the cleaning module to clean the viscometer probe and the organic matter analyzer sampling tube in the proximal measuring material pool after the organic conditioning stage or the second organic conditioning stage is completed.

[0097] Specifically, the present invention is also provided with a cleaning module. After the organic conditioning stage or the second organic conditioning stage, the control module controls the cleaning module to clean the viscometer probe and the organic matter meter sampling tube in the proximal measuring material pool to ensure the accuracy of the measurement results in the next sludge conditioning process.

[0098] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present invention may be combined with each other.

[0099] Example 1

[0100] like Figure 1 As shown, this embodiment provides a synchronous ex-situ measurement sludge conditioning control system, including:

[0101] Liquid level meter, online viscosity meter, organic matter meter, automatic control terminal, test material pool, agitator, sludge conditioning pool, cleaning device. The size of the sludge conditioning pool is 8m*8m*6m. The liquid level meter is installed above the sludge conditioning pool. The sludge conditioning pool is equipped with a sludge feed pump. The test material pool is equipped with a feed pump, a viscometer probe and an organic matter meter sampling tube. The effective volume of the test material pool is the pumping volume of the feed pump in 5 to 30 seconds. The viscometer probe is electrically connected to the online viscosity meter. The organic matter meter is connected to the organic matter meter sampling tube. The sample tubes are connected via a pipeline, the feed port of which is equipped with a filter membrane with a pore size of 0.2 to 200 μm. The organic matter analyzer is an online UV organic matter analyzer with a photometric measurement range of 0 to 200%, a sampling time of ≤20 seconds, and an accuracy of ±1%. The online viscosity analyzer has an accuracy of ±1% and a detection delay of ≤60 seconds. The liquid level meter is a radar level meter or an ultrasonic level meter with an accuracy of ±10 mm and a detection delay of ≤1 second. The sludge conditioning tank is connected to the test material tank via a feed pipe and a discharge pipe.

[0102] Select the first sludge conditioning operation mode, that is, the inorganic agent + organic agent conditioning mode; manually set the first time length △t1 = 600s, the second time length △t2 = 600s, the third time length is 10s, the initial mud identification viscosity allowable variation coefficient α0 = 10%, the viscosity change allowable variation coefficient after the addition of inorganic agents α1 = 300%, the viscosity change allowable variation coefficient after the addition of organic agents α2 = 300%, and the inorganic agent base dosage is 1.6m 3 , the organic matter content corresponding to the inorganic agent standard dosage w0=4.0AU / cm; the response coefficient of the dosage to the change of organic matter κ=1, the organic agent dosage is 9.5m 3 The above parameters can be set in advance in the first sludge conditioning operation mode. After selecting the first sludge conditioning operation mode, they can be used directly or modified according to actual conditions.

[0103] During the preparation stage, the automatic control terminal controls the sludge feeding pump of the sludge conditioning tank to start feeding sludge, and controls the liquid level gauge to measure the sludge level of the sludge conditioning tank. The bottom sludge thickness of the sludge conditioning tank is 0.7m. When the sludge level of the sludge conditioning tank reaches the target level H0=2.3m, the automatic control terminal controls the agitator to start stirring, and the internal timer starts timing. When t=△t1=600s, the bottom sludge and the newly fed sludge in the sludge conditioning tank are fully stirred. The automatic control terminal controls the feeding pump in the test material tank to continuously transport the sludge from the sludge conditioning tank to the test material tank, and discharges the test material through the discharge pipe. The sludge in the pool is continuously discharged into the sludge conditioning pool. At the same time, the viscosity online measuring instrument is controlled to start measuring the sludge viscosity of the sludge in the test material pool, and the initial sludge viscosity ζ0 = 10 Pa.s is obtained. When t = △t1 + △t2 = 1200s, the viscosity online measuring instrument is controlled to measure the sludge viscosity of the sludge in the test material pool again. At the same time, the organic matter measuring instrument is controlled to measure the sludge organic matter content w1 = 3.8AU / cm3. The amount of inorganic agent added in the inorganic conditioning stage is calculated according to the sludge organic matter content, V1 = V0 + κ (w1-w0) / w0 = 1.55m 3 ; and measure the sludge viscosity every 10 seconds. i ≤(1+α0)ζ i+1 Calculate the base viscosity ζ when 基准 =(ζ i +ζ i+1 ) / 2;

[0104] When t = 1200s, ζ 1200 =3.6Pa.s;

[0105] When t = 1210s, ζ 1210 =3.5Pa.s, satisfying ζ i =3.6≤(1+10%)ζ i+1 =3.9;

[0106] When t = 1220s, ζ 1220 =3.3Pa.s, satisfying ζ i =3.5≤(1+10%)ζ i+1 =3.6;

[0107] When t = 1230s, ζ 1230 =3.3Pa.s, satisfying ζ=3.3≤(1+10%)ζ i+1 =3.6;

[0108] At this time, the first setting condition is achieved: the sludge viscosity is measured three times in a row and all meet the ζ i ≤(1+α0)ζ i+1 , then calculate the base viscosity ζ 基准 =(ζ i +ζ i+1) / 2=(3.3+3.3) / 2=3.3Pa.s; the preparation stage ends and enters the inorganic conditioning stage;

[0109] In the inorganic conditioning stage, the automatic control terminal controls the inorganic agent dosing system according to the calculated inorganic agent dosage, and adds a cumulative amount of inorganic agent V1 = 1.55m 3 After the addition is completed, the control level meter measures the sludge level in real time and records the highest sludge level H max =3.4m and the real-time mud level of the sludge level falling back process after reaching the highest mud level, and at the same time control the viscosity online measuring instrument to measure the sludge viscosity in real time and record the highest sludge viscosity ζ(1 st , inorganic, max) = 90Pa.s and the real-time sludge viscosity of the sludge viscosity falling back after reaching the maximum sludge viscosity. When the real-time mud level and sludge viscosity meet the second setting condition, the second setting condition includes: three consecutive ζ t ≤(1+α inorganic )ζ 基准 , and H t ≤(1+β)H0, the inorganic conditioning stage ends and enters the organic conditioning stage; the measurement results of this embodiment are: H t =2.6m, H t ≤(1+15%)H0=2.76,ζ t1 =13≤(1+300%)ζbase=13.2Pa.s;ζ t2 =12≤(1+300%)ζbase=13.2Pa.s;ζ t3 =12≤(1+300%)ζbase=13.2Pa.s; where ζ i is the sludge viscosity measured for the i-th time, α0 is the allowable variation coefficient of the initial mud identification viscosity, α inorganic is the allowable coefficient of viscosity change after adding inorganic reagents, α organic is the allowable coefficient of variation of viscosity after adding organic reagent, ζ t The real-time sludge viscosity during the process of sludge viscosity falling after reaching the highest sludge viscosity, H t is the real-time sludge level during the sludge viscosity drop process after reaching the maximum sludge viscosity, H0 is the target sludge level, and β is the coefficient of the allowable retained foam layer thickness during the sludge viscosity drop process after reaching the maximum sludge viscosity;

[0110] During the organic conditioning stage, the automatic control terminal controls the start-up of the organic agent dosing system according to the set organic flocculant dosage, and the cumulative amount of organic agent added to the sludge conditioning tank is V2 = 9.5m 3 After the addition is completed, the viscosity of the sludge is measured in real time by the online viscosity meter and the maximum sludge viscosity ζ(2 nd, organic, max) = 170Pa.s and the real-time sludge viscosity of the sludge viscosity falling process after reaching the maximum sludge viscosity. When the sludge viscosity meets the third setting condition, the third setting condition is: three consecutive ζ t ≤(1+α organic )ζ 基准 , the organic conditioning stage is over, the agitator is turned off, and the cleaning device is controlled to clean the test material pool, the viscometer probe and the organic matter analyzer sampling tube; the measurement results of this embodiment are: ζ t1 =13Pa.s≤(1+300%)ζbase=13.2Pa.s;ζ t2 =13Pa.s,≤(1+300%)ζbase=13.2Pa.s;ζ t3 =13Pa.s≤(1+300%)ζbase=13.2Pa.s.

[0111] Example 2

[0112] like Figure 1 As shown, this embodiment provides a synchronous ex-situ measurement sludge conditioning control system, including:

[0113] Liquid level meter, online viscosity meter, organic matter meter, automatic control terminal, test material pool, agitator, sludge conditioning pool, cleaning device. The size of the sludge conditioning pool is 8m*8m*6m. The liquid level meter is installed above the sludge conditioning pool. The sludge conditioning pool is equipped with a sludge feed pump. The test material pool is equipped with a feed pump, a viscometer probe and an organic matter meter sampling tube. The effective volume of the test material pool is the pumping volume of the feed pump in 5 to 30 seconds. The viscometer probe is electrically connected to the online viscosity meter. The organic matter meter is connected to the organic matter meter sampling tube. The sample tubes are connected via a pipeline, the feed port of which is equipped with a filter membrane with a pore size of 0.2 to 200 μm. The organic matter analyzer is an online UV organic matter analyzer with a photometric measurement range of 0 to 200%, a sampling time of ≤20 seconds, and an accuracy of ±1%. The online viscosity analyzer has an accuracy of ±1% and a detection delay of ≤60 seconds. The liquid level meter is a radar level meter or an ultrasonic level meter with an accuracy of ±10 mm and a detection delay of ≤1 second. The sludge conditioning tank is connected to the test material tank via a feed pipe and a discharge pipe.

[0114] Select the second sludge conditioning operation mode, that is, the organic agent + inorganic agent + organic agent conditioning mode; manually set the first time length △t1 = 600s, the second time length △t2 = 600s, the third time length is 10s, the initial mud identification viscosity allowable variation coefficient α0 = 10%, the viscosity change allowable variation coefficient after the first organic agent addition α1 = 10%, the viscosity change allowable variation coefficient after the inorganic agent addition α2 = 300%, the viscosity change allowable variation coefficient after the second organic agent addition α3 = 300%, the inorganic agent base dosage is 1.6m 3, the organic matter content corresponding to the inorganic agent base dosage w0=4.0AU / cm; the response coefficient of the agent dosage to the change of organic matter κ=1, the dosage of the organic agent in the first organic conditioning stage is 2.5m 3 ; The dosage of organic agent in the second organic conditioning stage is 7m 3 The above parameters can be set in advance in the second sludge conditioning operation mode, and can be used directly after selecting the second sludge conditioning operation mode, or they can be modified according to actual conditions;

[0115] During the preparation stage, the automatic control terminal controls the sludge feeding pump of the sludge conditioning tank to start feeding sludge, and controls the liquid level gauge to measure the sludge level of the sludge conditioning tank. The bottom sludge thickness of the sludge conditioning tank is 0.7m. When the sludge level of the sludge conditioning tank reaches the target level H0=2.3m, the automatic control terminal controls the agitator to start stirring, and the internal timer starts timing. When t=△t1=600s, the bottom sludge and the newly fed sludge in the sludge conditioning tank are fully stirred. The automatic control terminal controls the feeding pump in the test material tank to continuously transport the sludge from the sludge conditioning tank to the test material tank, and discharges the test material through the discharge pipe. The sludge in the pool is continuously discharged into the sludge conditioning pool. At the same time, the viscosity online measuring instrument is controlled to start measuring the sludge viscosity of the sludge in the test material pool, and the initial sludge viscosity ζ0 = 10 Pa.s is obtained. When t = △t1 + △t2 = 1200s, the viscosity online measuring instrument is controlled to measure the sludge viscosity of the sludge in the test material pool again. At the same time, the organic matter measuring instrument is controlled to measure the sludge organic matter content w1 = 3.8AU / cm3. The amount of inorganic agent added in the inorganic conditioning stage is calculated according to the sludge organic matter content, V1 = V0 + κ (w1-w0) / w0 = 1.55m 3 ; and measure the sludge viscosity every 10 seconds. i ≤(1+α0)ζ i+1 Calculate the base viscosity ζ when 基准 =(ζ i +ζ i+1 ) / 2;

[0116] When t = 1200s, ζ 1200 =3.6Pa.s;

[0117] When t = 1210s, ζ 1210 =3.5Pa.s, satisfying ζ i =3.6≤(1+10%)ζ i+1 =3.9;

[0118] When t = 1220s, ζ 1220 =3.3Pa.s, satisfying ζ i =3.5≤(1+10%)ζ i+1 =3.6;

[0119] When t = 1230s, ζ1230 =3.3Pa.s, satisfying ζ=3.3≤(1+10%)ζ i+1 =3.6;

[0120] At this time, the first setting condition is achieved: the sludge viscosity is measured three times in a row and all meet the ζ i ≤(1+α0)ζ i+1 , then calculate the base viscosity ζ 基准 =(ζ i +ζ i+1 ) / 2=(3.3+3.3) / 2=3.3Pa.s; the preparation stage ends and enters the first organic conditioning stage;

[0121] In the first organic conditioning stage, the automatic control terminal controls the start-up of the organic agent dosing system according to the set organic flocculant dosage, and the cumulative amount of organic agent added to the sludge conditioning tank is V1 = 2.5m 3 After the addition is completed, the viscosity of the sludge is measured in real time by the online viscosity meter and the maximum sludge viscosity ζ(1 st , organic, max) = 83Pa.s and the real-time sludge viscosity of the sludge viscosity falling process after reaching the maximum sludge viscosity. When the sludge viscosity meets the third setting condition, the third setting condition is: three consecutive ζ t ≤(1+α organic )ζ 基准 , the first organic conditioning stage ends and enters the inorganic conditioning stage; the measurement results of this embodiment are: ζ t1 =3.5Pa.s≤(1+10%)ζBasic=3.6Pa.s;ζ t2 =3.3Pa.s≤(1+10%)ζbase=3.6Pa.s;ζ t3 =3.1Pa.s≤(1+10%)ζbase=3.6Pa.s;

[0122] In the inorganic conditioning stage, the automatic control terminal controls the inorganic agent dosing system according to the calculated inorganic agent dosage, and adds a cumulative amount of inorganic agent V1 = 1.55m 3 After the addition is completed, the control level meter measures the sludge level in real time and records the highest sludge level H max =3.2m and the real-time mud level of the sludge level falling back process after reaching the highest mud level, and at the same time control the viscosity online measuring instrument to measure the sludge viscosity in real time and record the highest sludge viscosity ζ(2 nd , inorganic, max) = 75Pa.s and the real-time sludge viscosity of the sludge viscosity falling back process after reaching the maximum sludge viscosity. When the real-time mud level and sludge viscosity meet the second setting condition, the second setting condition includes: three consecutive ζ t ≤(1+α inorganic )ζ基准 , and H t ≤(1+β)H0, the inorganic conditioning stage ends and enters the second organic conditioning stage; the measurement results of this embodiment are: H t =2.42m, H t ≤(1+15%)H0=2.65,ζ t1 =13≤(1+300%)ζbase=13.2Pa.s;ζ t2 =12≤(1+300%)ζbase=13.2Pa.s;ζ t3 =12≤(1+300%)ζbase=13.2Pa.s; where ζ i is the sludge viscosity measured for the i-th time, α0 is the allowable variation coefficient of the initial mud identification viscosity, α inorganic is the allowable coefficient of viscosity change after adding inorganic reagents, α organic is the allowable coefficient of variation of viscosity after adding organic reagent, ζ t The real-time sludge viscosity during the process of sludge viscosity falling after reaching the highest sludge viscosity, H t is the real-time sludge level during the sludge viscosity drop process after reaching the maximum sludge viscosity, H0 is the target sludge level, and β is the coefficient of the allowable retained foam layer thickness during the sludge viscosity drop process after reaching the maximum sludge viscosity;

[0123] In the second organic conditioning stage, the automatic control terminal controls the start-up of the organic agent dosing system according to the set organic flocculant dosage, and the cumulative amount of organic agent added to the sludge conditioning tank is V2 = 7m 3 After the addition is completed, the viscosity online meter is controlled to measure the sludge viscosity in real time and record the highest sludge viscosity ζ(3 rd , organic, max) = 140Pa.s and the real-time sludge viscosity of the sludge viscosity falling process after reaching the maximum sludge viscosity. When the sludge viscosity meets the third setting condition, the third setting condition is: three consecutive ζ t ≤(1+α organic )ζ 基准 , the organic conditioning stage is over, the agitator is turned off, and the cleaning device is controlled to clean the test material pool, the viscometer probe and the organic matter analyzer sampling tube; the measurement results of this embodiment are: ζ t1 =11Pa.s≤(1+300%)ζbase=13.2Pa.s;ζ t2 =13Pa.s,≤(1+300%)ζbase=13.2Pa.s;ζ t3 =11Pa.s≤(1+300%)ζbase=13.2Pa.s.

[0124] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A synchronous ex situ measurement sludge conditioning control system, characterized in that: include: A first measuring module is provided above the sludge conditioning tank, and is used to measure first target data of the sludge in the sludge conditioning tank; a second measuring module, disposed at a remote end of the sludge conditioning tank, and configured to measure second target data of the sludge in the sludge conditioning tank; a third measuring module, disposed at a remote end of the sludge conditioning tank, and configured to measure third target data of the sludge in the sludge conditioning tank; A proximal measurement tank is provided at the proximal end of the sludge conditioning tank, and the second measurement module and the third measurement module measure the second target data and the third target data through the proximal measurement tank; a control module, configured to control the operation of each sludge conditioning stage based on the first target data, the second target data, and the third target data in a first sludge conditioning operation mode or a second sludge conditioning operation mode; The first measurement module, the second measurement module and the third measurement module are all electrically connected to the control module; The proximal measurement tank is connected to the sludge conditioning tank via a feed pipe and a discharge pipe; The first measuring module is a liquid level meter, the second measuring module is an online viscosity meter, and the third measuring module is an organic matter meter; the first target data is the sludge level, the second target data is the sludge viscosity, and the third target data is the sludge organic matter content; The proximal measurement pool is provided with a feed pump, a viscometer probe and a sampling tube of an organic matter analyzer; The feed pump is connected to the feed pipe, and in the first sludge conditioning operation mode or the second sludge conditioning operation mode, the sludge in the sludge conditioning tank is continuously introduced into the proximal measuring tank for measurement through the feed pump and the feed pipe, and the sludge in the proximal measuring tank is continuously discharged into the sludge conditioning tank through the discharge pipe; The viscometer probe is electrically connected to the second measurement module, and the organic matter analyzer sampling tube is connected to the third measurement module via a pipeline; The first sludge conditioning operation mode includes: preparation stage, inorganic conditioning stage and organic conditioning stage; The second sludge conditioning operation mode includes: preparation stage, first organic conditioning stage, inorganic conditioning stage and second organic conditioning stage; The preparation phase includes: The control module determines whether to stop sludge feeding based on the sludge level measured in real time by the liquid level meter. When the sludge level reaches the target level, the control module controls the sludge feeding pump in the sludge conditioning tank to stop feeding sludge, and simultaneously controls the agitator in the sludge conditioning tank to start full-time stirring and timing. When the stirring time reaches a set first time, the feed pump is controlled to start, and the second measuring module is controlled to start measuring to obtain an initial sludge viscosity; When the second time interval is set, the second measuring module is controlled to start measuring again, and at every third time interval, the second measuring module is controlled to measure, and the third measuring module is controlled to start measuring, so as to obtain the initial sludge organic matter content of the sludge in the sludge conditioning tank, and the control module calculates the dosage of the inorganic agent based on the initial sludge organic matter content; When the measurement result of the second measurement module meets the first set condition and the reference sludge viscosity is calculated, the preparation stage ends and the process enters the inorganic conditioning stage or the first organic conditioning stage; The inorganic conditioning stage includes: The control module controls the dosing system to add inorganic agents to the sludge conditioning tank based on the dosage of the inorganic agents. After the addition is completed, the control module controls the first measuring module to measure the sludge level in real time and record the maximum sludge level and the real-time sludge level of the sludge level falling back after reaching the maximum sludge level. At the same time, the control module controls the second measuring module to measure the sludge viscosity in real time and record the maximum sludge viscosity and the real-time sludge viscosity of the sludge viscosity falling back after reaching the maximum sludge viscosity. When the real-time sludge level and the sludge viscosity meet a second set condition, the inorganic conditioning stage ends and enters the organic conditioning stage or the second organic conditioning stage. The organic conditioning stage, the first organic conditioning stage and the second organic conditioning stage include: The control module controls the dosing system to add the organic agent to the sludge conditioning tank based on the set first organic agent dosage or the second organic agent dosage. After the addition is completed, the control module controls the second measuring module to measure the sludge viscosity in real time and record the maximum sludge viscosity and the real-time sludge viscosity of the sludge viscosity during the process of sludge viscosity falling after reaching the maximum sludge viscosity. When the sludge viscosity meets a third set condition, the organic conditioning stage, the first organic conditioning stage, and the second organic conditioning stage are terminated, and the agitator is turned off or the inorganic conditioning stage is entered; The set first organic agent dosage is used for the organic conditioning stage or the first organic conditioning stage, and the set second organic agent dosage is used for the second organic conditioning stage; The first setting condition includes: The sludge viscosity was measured three times in a row and all met the ζ i ≤(1+α0)ζ i+1 ; The second setting condition includes: Three consecutive times t ≤(1+α inorganic )ζ 基准 , and H t ≤(1+β)H0; The third setting condition includes: Three consecutive times t ≤(1+α organic )ζ 基准 ; Among them i is the sludge viscosity measured for the i-th time, in Pa.s, α0 is the allowable variation coefficient of the initial mud identification viscosity, α inorganic is the allowable coefficient of viscosity change after adding inorganic reagents, α organic is the allowable coefficient of variation of viscosity after adding organic reagent, ζ 基准 is the benchmark sludge viscosity, ζ 基准 =(ζ i +ζ i+1 ) / 2, unit is Pa.s, ζ t The real-time sludge viscosity during the process of sludge viscosity falling after reaching the maximum sludge viscosity, in Pa.s, H t is the real-time sludge level in the process of sludge viscosity falling back after reaching the maximum sludge viscosity, in m; H0 is the target sludge level, in m; β is the allowable retained foam layer thickness coefficient in the process of sludge viscosity falling back after reaching the maximum sludge viscosity.

2. The synchronous ex-situ measurement sludge conditioning control system according to claim 1 is characterized in that: The effective volume of the proximal measurement pool is the pumping volume of the feed pump in 5 to 30 seconds.

3. The synchronous ex-situ measurement sludge conditioning control system according to claim 1 is characterized in that: The calculation expression of the inorganic agent dosage is: V1=V0+κ(w1-w0) / w0; Among them, V0 is the set inorganic agent base dosage, the unit is m 3 , w0 is the organic matter content corresponding to the set inorganic agent baseline dosage, in AU / cm2, w1 is the initial sludge organic matter content, in AU / cm2, and κ is the response coefficient of the inorganic agent dosage to the change of organic matter content.

4. The synchronous ex-situ measurement sludge conditioning control system according to claim 1 is characterized in that: Also includes: The cleaning module is used to clean the viscometer probe and the organic matter analyzer sampling tube in the proximal measurement tank by controlling the cleaning module after the organic conditioning stage or the second organic conditioning stage is completed.

Citation Information

Patent Citations

  • Advanced anaerobic digestion sludge chemical conditioning automatic control system and method thereof

    CN115536229A

  • Online sludge detection system in sludge treatment process

    CN210506035U