Method and device for controlling sludge amount in aerobic granular sludge process, reaction system, storage medium and server

Abstract

The invention provides a method and a device for controlling sludge quantity in an aerobic granular sludge process, a reaction system, a storage medium and a server. The control method comprises the following steps: acquiring a previous sludge parameter of a previous treatment period in an aeration stage; in the water inlet stage of the current treatment period, the instantaneous pollutant concentration of sewage in the water inlet pipe at the current collection moment of the current treatment period is obtained; determining required instantaneous sludge parameters according to the instantaneous pollutant concentration; determining the required sludge increment according to the instantaneous sludge parameter and the previous sludge parameter; if the sludge increment is negative increment, controlling to increase the amount of sewage entering the reaction tank; if the sludge increment is positive increment, controlling to reduce the amount of sewage entering the reaction tank; after water feeding is completed, water feeding condition information of the current treatment period is obtained, and the sludge yield is determined according to the water feeding condition information; and after the precipitation is completed, discharging the sludge according to the sludge yield.

Description

Technical Field

[0001] The invention relates to the technical field of sludge amount measurement and control, in particular to a method, a device, a storage medium and a server for controlling the sludge amount in an aerobic granular sludge process. Background Art

[0002] Biological sewage treatment technology mainly involves the process of using microorganisms to use pollutants in water bodies as metabolic raw materials and then utilize them and remove them from the water bodies. During the operation of the system, ensuring a certain amount of microorganisms is the key to the stable operation of the system. The amount of residual sludge is an important control parameter in the aerobic granular sludge process, so the amount of residual sludge needs to be controlled. In the prior art, the amount of residual sludge is usually evaluated by parameters such as sludge concentration and sludge age, and then the amount of sludge discharged is determined. However, this evaluation method does not take into account the relationship between the fluctuation of incoming water quality and the amount of residual sludge discharged, which will result in too little or too much sludge discharge, affecting the stability of biochemical operation. Summary of the invention

[0003] In view of the technical problems existing in the prior art, the present application proposes a method, device, reaction system, storage medium and server for controlling the amount of sludge in an aerobic granular sludge process.

[0004] In a first aspect, the present application proposes a method for controlling the amount of sludge in an aerobic granular sludge process, comprising:

[0005] Obtain the previous sludge parameters during the aeration stage of the previous treatment cycle;

[0006] During the water inlet phase of the current treatment cycle, the instantaneous pollutant concentration of the sewage in the water inlet pipe at the current collection time is obtained;

[0007] Determining required instantaneous sludge parameters according to the instantaneous pollutant concentration;

[0008] Determining the required sludge increment according to the instantaneous sludge parameter and the previous sludge parameter;

[0009] If the sludge increment is a negative increment, the amount of sewage entering the reaction tank is controlled to increase;

[0010] If the sludge increment is a positive increment, the amount of sewage entering the reaction tank is controlled to be reduced;

[0011] After the water inlet is completed, the water inlet information of the current treatment cycle is obtained, and the sludge production is determined according to the water inlet information;

[0012] After the sedimentation is completed, the sludge is discharged according to the sludge production amount.

[0013] Optionally, the method of obtaining water inflow information of the current treatment cycle and determining the amount of mud produced according to the water inflow information includes:

[0014] Get the current mud production rate;

[0015] The amount of sludge produced is determined based on the current sludge production rate and the water inflow information of the current treatment cycle.

[0016] Optionally, after discharging the sludge according to the sludge production amount, the control method further includes:

[0017] Obtain current sludge parameters during the aeration phase of the current treatment cycle in the reaction tank;

[0018] According to the current sludge parameter and the previous sludge parameter, the current sludge production rate is corrected to be used for the sludge production rate of the next treatment cycle.

[0019] Optionally, the step of determining the required instantaneous sludge parameters according to the instantaneous pollutant concentration includes:

[0020] Calculating the average pollutant concentration corresponding to the current collection moment according to the instantaneous pollutant concentration;

[0021] Calculate the total amount of pollutants corresponding to the current collection time according to the average pollutant concentration and the theoretical water inflow;

[0022] The instantaneous sludge parameters required at the current collection moment are calculated according to the total amount of pollutants.

[0023] Optionally, the previous sludge parameter is one of sludge age, sludge load or sludge concentration; and the instantaneous sludge parameter is of the same type as the previous sludge parameter.

[0024] The present application also provides a device for controlling the amount of sludge in an aerobic granular sludge process, comprising:

[0025] The acquisition module acquires the previous sludge parameters in the aeration stage of the previous treatment cycle; in the water inlet stage of the current treatment cycle, the instantaneous pollutant concentration of the sewage in the water inlet pipe at the current collection time is acquired; after the water inlet is completed, the water inlet information of the current treatment cycle is acquired, and the sludge production is determined according to the water inlet information;

[0026] a determination module configured to determine a required instantaneous sludge parameter according to the instantaneous pollutant concentration, and to determine a required sludge increment according to the instantaneous sludge parameter and the previous sludge parameter;

[0027] The control module is configured to control the amount of sewage entering the reaction tank to increase if the sludge increment is a negative increment; and to control the amount of sewage entering the reaction tank to decrease if the sludge increment is a positive increment;

[0028] The sludge discharge module is configured to discharge the sludge according to the sludge production after sedimentation is completed.

[0029] Optionally, the acquisition module is further configured to acquire a current mud production rate;

[0030] The determination module is further configured to determine the amount of mud produced according to the current mud production rate and water inflow information of the current treatment cycle.

[0031] In a third aspect, the present application also proposes a reaction system for an oxygen granular sludge process, comprising the control device as described above.

[0032] In a fourth aspect, the present application further proposes a storage medium on which a computer program is stored, and the computer program is loaded by a processor to execute the steps of the method for controlling the amount of sludge in the aerobic granular sludge process as described above.

[0033] In a fifth aspect, the present application further proposes a server, comprising:

[0034] one or more processors;

[0035] Memory; and

[0036] One or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the method for controlling the amount of sludge in the aerobic granular sludge process as described above.

[0037] In the technical solution of the embodiment of the present application, during the water inlet process of the current treatment cycle, the required instantaneous sludge parameters are determined by the instantaneous pollutant concentration of the sewage in the collected water inlet pipe, and then the required sludge increment is determined by the instantaneous sludge parameters and the previous sludge parameters during the aeration stage of the previous treatment cycle; if the sludge increment is a negative increment, it means that sludge needs to be discharged instantaneously, and since the sludge discharge process needs to be carried out after the aeration is completed, it is necessary to increase the amount of sewage entering the reaction tank at this time so that the sewage entering the reaction tank can match the current sludge situation as much as possible; and if the sludge increment is a positive increment, it means that sludge needs to be added instantaneously. However, there is no situation where sludge is added to the reaction tank, so it is necessary to reduce the amount of sewage entering the reaction tank at this time so that the sewage can match the current sludge situation; therefore, during the water inlet process, the water inlet volume can be dynamically adjusted so that after the water inlet is completed, the sewage concentration can match the previous sludge parameters as much as possible, so that the sludge in the reaction tank during biochemical and aeration can basically meet the sewage treatment entering the reaction tank, and the new sludge generated is basically stable, so that the sludge production can be determined according to the water inlet situation information, so that the sludge can be discharged according to the sludge production after the sedimentation is completed, so that the sludge parameters in the reaction tank remain basically stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the flow of a method for controlling the amount of sludge in an aerobic granular sludge process;

[0039] Figure 2 It is another schematic flow chart of a method for controlling the amount of sludge in an aerobic granular sludge process;

[0040] Figure 3 It is another schematic flow chart of the method for controlling the amount of sludge in the aerobic granular sludge process;

[0041] Figure 4 Another schematic diagram of a process for controlling the amount of sludge in an aerobic granular sludge process;

[0042] Figure 5 It is a block diagram of a device for controlling the amount of sludge in an aerobic granular sludge process;

[0043] Figure 6 It is a structural block diagram of a server provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] 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.

[0045] Aerobic Granular Sludge (AGS) is a granular activated sludge formed by the self-agglomeration of microorganisms. After sludge granulation, it shows the characteristics of biological density, high relative density, and fast sedimentation rate. Compared with traditional biochemical treatment technology, the AGS process can maintain more than 2 times the sludge concentration, thereby effectively reducing the biochemical reaction time and saving land. In addition, the AGS process does not require the configuration of sludge return, mixed liquor return, anaerobic anoxic mixing, scraper and other dynamic equipment required by traditional biochemical processes, which can effectively reduce the corresponding equipment investment and construction and operating costs. It is an efficient, energy-saving and low-carbon process. In the AGS process, the degree of sludge granulation is improved by screening and discharging the residual sludge, which is the key to commissioning and operation. Therefore, the discharge of residual sludge is particularly important in the AGS process. The AGS treatment system usually includes a control device, a collection device, an inlet pipe, a sewage pipe, a clean water pipe, a sludge discharge pipe and a reaction tank. The reaction tank is the place to realize the aerobic granular sludge process. The water inlet pipe, clean water pipe and sludge discharge pipe are connected to the reaction tank respectively. The collection devices include flow sensor, organic concentration sensor, solid concentration sensor, pH meter, liquid level meter, etc. The control device controls the parameters in the reaction tank through the parameters collected by the flow sensor, organic concentration sensor, solid concentration sensor, pH meter, liquid level meter and other collection devices to achieve the regulation and monitoring of the entire system.

[0046] In the prior art, sludge is discharged regularly after each treatment cycle is completed. However, the amount of sludge that needs to be discharged does not match the influent water quality of the current treatment cycle. That is, the prior art does not consider the relationship between the fluctuation of incoming water quality and the amount of residual sludge discharged, which will result in too little or too much sludge discharge, affecting the stability of biochemical operation.

[0047] like Figure 1 As shown, the embodiment of the present application proposes a method for controlling the amount of sludge in an aerobic granular sludge process, comprising:

[0048] S100, obtaining the previous sludge parameters in the aeration stage of the previous treatment cycle;

[0049] S210, in the water inlet stage of the current treatment cycle, obtaining the instantaneous pollutant concentration of the sewage in the water inlet pipe at the current collection time;

[0050] S220, determining required instantaneous sludge parameters according to the instantaneous pollutant concentration;

[0051] S230, determining a required sludge increment according to the instantaneous sludge parameter and the previous sludge parameter;

[0052] S240, if the sludge increment is a negative increment, controlling to increase the amount of sewage entering the reaction tank;

[0053] S250, if the sludge increment is a positive increment, controlling to reduce the amount of sewage entering the reaction tank;

[0054] S300, after the water inlet is completed, the water inlet information of the current treatment cycle is obtained, and the mud production amount is determined according to the water inlet information;

[0055] S400, after the sedimentation is completed, the sludge is discharged according to the sludge production amount.

[0056] In the technical solution of the embodiment of the present application, during the water inlet process of the current treatment cycle, the required instantaneous sludge parameters are determined by the instantaneous pollutant concentration of the sewage in the collected water inlet pipe, and then the required sludge increment is determined by the instantaneous sludge parameters and the previous sludge parameters during the aeration stage of the previous treatment cycle; if the sludge increment is a negative increment, it means that sludge needs to be discharged instantaneously, and since the sludge discharge process needs to be carried out after the aeration is completed, it is necessary to increase the amount of sewage entering the reaction tank at this time so that the sewage entering the reaction tank can match the current sludge situation as much as possible; and if the sludge increment is a positive increment, it means that sludge needs to be added instantaneously. However, there is no situation where sludge is added to the reaction tank, so it is necessary to reduce the amount of sewage entering the reaction tank at this time so that the sewage can match the current sludge situation; therefore, during the water inlet process, the water inlet volume can be dynamically adjusted so that after the water inlet is completed, the sewage concentration can match the previous sludge parameters as much as possible, so that the sludge in the reaction tank during biochemical and aeration can basically meet the sewage treatment entering the reaction tank, and the new sludge generated is basically stable, so that the sludge production can be determined according to the water inlet situation information, so that the sludge can be discharged according to the sludge production after the sedimentation is completed, so that the sludge parameters in the reaction tank remain basically stable.

[0057] In the above embodiment, the water inflow condition information includes the total amount of water inflow and the pollutant concentration information.

[0058] In the embodiment, the previous sludge parameter is a parameter collected after the aeration of the previous treatment cycle is completed. During the aeration stage, the sludge concentration in the reactor is uniform. The monitoring instrument sensor is placed 1 meter below the liquid level at the top of the reactor. The effective water depth of the reactor is generally 6-9 meters. In this way, the sludge concentration measured during the aeration stage can represent the overall situation of the sludge in the reactor.

[0059] In the technical solution of the present application, the water inlet pipe is connected to the bottom area of ​​the reaction tank, and the clean water pipe is connected to the upper area of ​​the reaction tank. Through the technical solution of the embodiment of the present application, the sewage treatment is divided into the water inlet stage, the aeration stage, the sedimentation stage and the sludge discharge stage. In the water inlet stage, in the water inlet stage of the current treatment cycle, the instantaneous pollutant concentration of the sewage in the water inlet pipe at the current collection time is obtained; the required instantaneous sludge parameter is determined according to the instantaneous pollutant concentration; the required sludge increment is determined according to the instantaneous sludge parameter and the previous sludge parameter. If the sludge increment is a negative increment, the amount of sewage entering the reaction tank is controlled to increase; if the sludge increment is a positive increment, the amount of sewage entering the reaction tank is controlled to decrease; until the water inlet is completed. At the same time as the water inlet, the treated clean water of the previous treatment cycle flows out through the clean water pipe. After the water inlet is completed, the aeration stage is entered, and the sludge begins to diffuse under the action of the gas and begins to treat the sewage; after the aeration is completed, the sedimentation stage is entered. In the sedimentation stage, the sludge settles downward, and the clean water is located in the upper layer; after the sedimentation is completed, the sludge discharge begins. The sludge discharge pipe is connected to the middle area (or the upper middle area) of the reaction tank; after the sludge discharge is completed, the sewage treatment enters the next treatment cycle.

[0060] Combination Figure 1 As shown, during the water inlet process, the pollutant concentration is collected for multiple times. Each time the pollutant concentration is collected, the sludge parameter matching the pollutant concentration needs to be calculated, and then the sludge parameter is compared with the previous sludge parameter to determine the required sludge increment, and then the amount of sewage entering the water is controlled, and then the water amount of the water inlet is intermittently adjusted until the water inlet is completed; after the water inlet is completed, the sewage concentration can be matched with the previous sludge parameter as much as possible, so that the sludge concentration in the reaction tank during biochemical and aeration can basically meet the sewage treatment entering the reaction tank, and the new sludge generated is basically stable, so that the sludge production can be determined according to the water inlet information, and the sludge is discharged according to the sludge production, so that the sludge parameters in the reaction tank remain basically stable.

[0061] As an optional implementation of the above embodiment, the method of obtaining water inflow information of the current treatment cycle and determining the amount of mud produced according to the water inflow information includes:

[0062] S410, obtaining the current mud production rate;

[0063] S420, determining the amount of mud produced according to the current mud production rate and the water inflow information of the current treatment cycle.

[0064] In the embodiment, the current sludge rate corresponds to the previous sludge parameter. For example, if the sludge concentration is 8000 mg / l, the corresponding current sludge rate is 0.4 kg of organic sludge can be produced for every 1 kg of COD removed. The sludge rate is 0.4. The influent information of the current cycle represents the total amount of pollutants that come in. The sludge production is obtained by multiplying the sludge rate by the total amount of pollutants.

[0065] As an optional implementation of the above embodiment, after discharging the sludge according to the sludge production amount, the control method further includes:

[0066] S510 obtains current sludge parameters in the aeration stage of the current treatment cycle in the reaction tank;

[0067] S520: According to the current sludge parameter and the previous sludge parameter, the current sludge production rate is corrected to be used for the sludge production rate of the next treatment cycle.

[0068] During the actual operation, there is a certain error between the amount of discharged sludge and the calculated sludge production. Therefore, the sludge parameters after discharge are not the same as those of the previous cycle. Therefore, the sludge parameters of the reaction tank will change after discharge. Therefore, the sludge parameters of the reaction tank are collected again to re-determine the sludge production rate with the previous sludge parameters for the calculation of the sludge production in the next treatment cycle, so that the amount of sludge in the reaction tank is dynamically balanced during the entire treatment cycle to ensure the overall stability of the sludge concentration.

[0069] like Figure 4 As shown, in the technical solution of the above embodiment, the instantaneous sludge parameters required for determining the instantaneous pollutant concentration include:

[0070] S221, calculating the average pollutant concentration corresponding to the current collection time according to the instantaneous pollutant concentration;

[0071] S222, calculating the total amount of pollutants corresponding to the current collection time according to the average pollutant concentration and the theoretical water inflow;

[0072] S223, calculating instantaneous sludge parameters required at the current collection time according to the total amount of pollutants.

[0073] In the technical solution of the embodiment of the present application, the concentration sensor on the sewage pipe collects the pollutant concentration of the sewage in real time; the system obtains the instantaneous pollutant concentration at preset intervals; when water enters and runs to the current collection time, the current instantaneous pollutant concentration is obtained; then the average pollutant concentration at the current collection time is calculated based on the instantaneous pollutant concentration: then the total amount of pollutants at the current collection time is calculated based on the average pollutant concentration and the theoretical water inlet volume; the instantaneous sludge parameters at the current collection time are calculated based on the total amount of pollutants.

[0074] In the technical solution of the embodiment, each collection moment corresponds to an instantaneous pollutant concentration; when running to the current collection moment, the instantaneous pollutant concentrations of all collection moments before the current collection moment of the treatment cycle and the pollutant concentration at the current collection moment are averaged to obtain the average pollutant concentration; then the total amount of pollutants corresponding to the collection moment is obtained based on the average pollutant concentration and the theoretical water inlet volume; the theoretical water inlet volume is the preset water inlet volume for the current treatment cycle. The instantaneous sludge parameters required at the current collection moment are calculated according to the total amount of pollutants; in this embodiment, the instantaneous sludge parameters corresponding to the current collection moment are compared with the previous sludge parameters to determine the sludge increment; if the sludge increment is a negative increment, it means that sludge needs to be discharged at the instant, and since the sludge discharge process can only be carried out after aeration is completed, it is necessary to increase the amount of sewage entering the reaction tank at this time so that the sewage entering the reaction tank can match the current sludge situation as much as possible; and if the sludge increment is a positive increment, it means that sludge needs to be added at the instant, but there is no situation of adding sludge to the reaction tank, so it is necessary to reduce the amount of sewage entering the reaction tank at this time so that the sewage can match the current sludge situation; therefore, during the water inlet process, the water inlet volume can be dynamically adjusted so that after the water inlet is completed, the total amount of pollutants can match the previous sludge parameter as much as possible,

[0075] As an optional implementation of the above embodiment, the previous sludge parameter is one of sludge age, sludge load or sludge concentration; the instantaneous sludge parameter is of the same type as the previous sludge parameter. For example, the sludge parameter is sludge load; the currently required sludge load can be determined according to the instantaneous sludge parameter (sludge load refers to the amount of pollutants that can be tolerated per unit time); then, according to the previous sludge load and the determined sludge load, the difference in sludge load can be obtained, and the required sludge increment can be determined according to the difference. The required sludge amount can be determined by the sludge load method. In other embodiments, the required sludge increment can also be determined by combining the instantaneous pollutant concentration with the sludge age method or the sludge concentration method.

[0076] like Figure 5 As shown, the present application proposes a device for controlling the amount of sludge in an aerobic granular sludge process, comprising:

[0077] The acquisition module 10 acquires the previous sludge parameters in the aeration stage of the previous treatment cycle; in the water inlet stage of the current treatment cycle, acquires the instantaneous pollutant concentration of the sewage in the water inlet pipe at the current collection time; after the water inlet is completed, acquires the water inlet information of the current treatment cycle, and determines the sludge production according to the water inlet information;

[0078] A determination module 20, configured to determine a required instantaneous sludge parameter according to the instantaneous pollutant concentration, and determine a required sludge increment according to the instantaneous sludge parameter and the previous sludge parameter;

[0079] The control module 30 is configured to control the amount of sewage entering the reaction tank to increase if the sludge increment is a negative increment; and to control the amount of sewage entering the reaction tank to decrease if the sludge increment is a positive increment;

[0080] The sludge discharge module 40 is configured to discharge sludge according to the sludge production amount after sedimentation is completed.

[0081] Optionally, the acquisition module is further configured to acquire a current mud production rate;

[0082] The determination module is further configured to determine the amount of mud produced according to the current mud production rate and water inflow information of the current treatment cycle.

[0083] The present application proposes a reaction system for an oxygen granular sludge process, comprising the control device as described above.

[0084] Specifically, please refer to Figure 6 The schematic diagram of the structure of a server provided by an embodiment of the present invention is shown. The server includes a central processing unit (CPU), a system memory including a random access memory (RAM) and a read-only memory (ROM), and a system bus connecting the system memory and the central processing unit. The server also includes a basic input / output system (I / O) system that helps transmit information between various devices in the computer, and a large-capacity storage device for storing an operating system, application programs, and other program modules.

[0085] The basic input / output system includes a display for displaying information and an input device such as a mouse and a keyboard for user inputting information. The display and the input device are connected to the central processing unit through an input / output controller connected to the system bus. The basic input / output system may also include an input / output controller for receiving and processing inputs from a plurality of other devices such as a keyboard, a mouse, or an electronic stylus. Similarly, the input / output controller also provides output to a display screen, a printer, or other types of output devices.

[0086] The mass storage device is connected to the central processing unit via a mass storage controller (not shown) connected to the system bus. The mass storage device and its associated computer readable medium provide non-volatile storage for the server. That is, the mass storage device may include a computer readable medium (not shown) such as a hard disk or a CD-ROM drive.

[0087] Without loss of generality, the computer readable medium may include computer storage media and communication media. Computer storage media include volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer readable instructions, data structures, program modules or other data. Computer storage media include RAM, ROM, EPROM, EEPROM, flash memory or other solid-state storage technologies, CD-ROM, DVD or other optical storage, cassettes, magnetic tapes, disk storage or other magnetic storage devices. Of course, those skilled in the art will appreciate that the computer storage media is not limited to the above. The above-mentioned system memory and mass storage devices may be collectively referred to as memory.

[0088] According to various embodiments of the present invention, the server can also be connected to a remote computer on the network through a network such as the Internet. That is, the server can be connected to the network through a network interface unit connected to the system bus, or the network interface unit can be used to connect to other types of networks or remote computer systems (not shown).

[0089] The memory further includes one or more programs, which are stored in the memory and are used to execute the method for controlling the amount of sludge in the aerobic granular sludge process provided in the above embodiment:

[0090] In a first aspect, the present application proposes a method for controlling the amount of sludge in an aerobic granular sludge process, comprising:

[0091] Obtain the previous sludge parameters during the aeration stage of the previous treatment cycle;

[0092] During the water inlet phase of the current treatment cycle, the instantaneous pollutant concentration of the sewage in the water inlet pipe at the current collection time is obtained;

[0093] Determining required instantaneous sludge parameters according to the instantaneous pollutant concentration;

[0094] Determining the required sludge increment according to the instantaneous sludge parameter and the previous sludge parameter;

[0095] If the sludge increment is a negative increment, the amount of sewage entering the reaction tank is controlled to increase;

[0096] If the sludge increment is a positive increment, the amount of sewage entering the reaction tank is controlled to be reduced;

[0097] After the water inlet is completed, the water inlet information of the current treatment cycle is obtained, and the sludge production is determined according to the water inlet information;

[0098] After the sedimentation is completed, the sludge is discharged according to the sludge production amount.

[0099] Optionally, the method of obtaining water inflow information of the current treatment cycle and determining the amount of mud produced according to the water inflow information includes:

[0100] Get the current mud production rate;

[0101] The amount of sludge produced is determined based on the current sludge production rate and the water inflow information of the current treatment cycle.

[0102] Optionally, after discharging the sludge according to the sludge production amount, the control method further includes:

[0103] Obtain current sludge parameters during the aeration phase of the current treatment cycle in the reaction tank;

[0104] According to the current sludge parameter and the previous sludge parameter, the current sludge production rate is corrected to be used for the sludge production rate of the next treatment cycle.

[0105] Optionally, the step of determining the required instantaneous sludge parameters according to the instantaneous pollutant concentration includes:

[0106] Calculating the average pollutant concentration corresponding to the current collection moment according to the instantaneous pollutant concentration;

[0107] Calculate the total amount of pollutants corresponding to the current collection time according to the average pollutant concentration and the theoretical water inflow;

[0108] The instantaneous sludge parameters required at the current collection moment are calculated according to the total amount of pollutants.

[0109] Optionally, the previous sludge parameter is one of sludge age, sludge load or sludge concentration; and the instantaneous sludge parameter is of the same type as the previous sludge parameter.

[0110] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for controlling the amount of sludge in an aerobic granular sludge process, characterized in that: include: Obtain the previous sludge parameters during the aeration phase of the previous treatment cycle; In the water inlet stage of the current treatment cycle, the instantaneous pollutant concentration of the sewage in the water inlet pipe at the current collection time is obtained; Determining required instantaneous sludge parameters according to the instantaneous pollutant concentration; Determining the required sludge increment according to the instantaneous sludge parameter and the previous sludge parameter; If the sludge increment is a negative increment, the amount of sewage entering the reaction tank is controlled to increase; If the sludge increment is a positive increment, the amount of sewage entering the reaction tank is controlled to be reduced; After the water inlet is completed, the water inlet information of the current treatment cycle is obtained, and the sludge production is determined according to the water inlet information; After the sedimentation is completed, the sludge is discharged according to the sludge production amount.

2. The control method according to claim 1, characterized in that: The method of obtaining water inflow information of the current treatment cycle and determining the amount of mud produced according to the water inflow information includes: Get the current mud production rate; The amount of sludge produced is determined based on the current sludge production rate and the water inflow information of the current treatment cycle.

3. The control method according to claim 2, characterized in that: After discharging the sludge according to the sludge production amount, the control method further comprises: Obtain current sludge parameters during the aeration phase of the current treatment cycle in the reaction tank; According to the current sludge parameter and the previous sludge parameter, the current sludge production rate is corrected to be used for the sludge production rate of the next treatment cycle.

4. The control method according to claim 1, characterized in that: The instantaneous sludge parameters required for determining the instantaneous pollutant concentration include: Calculating the average pollutant concentration corresponding to the current collection moment according to the instantaneous pollutant concentration; Calculate the total amount of pollutants corresponding to the current collection time according to the average pollutant concentration and the theoretical water inflow; The instantaneous sludge parameters required at the current collection moment are calculated according to the total amount of pollutants.

5. The control method according to claim 1, characterized in that: The previous sludge parameter is one of sludge age, sludge load or sludge concentration; the instantaneous sludge parameter is of the same type as the previous sludge parameter.

6. A device for controlling the amount of sludge in an aerobic granular sludge process, characterized in that: include: The acquisition module acquires the previous sludge parameters in the aeration stage of the previous treatment cycle; in the water inlet stage of the current treatment cycle, the instantaneous pollutant concentration of the sewage in the water inlet pipe at the current collection time is acquired; after the water inlet is completed, the water inlet information of the current treatment cycle is acquired, and the sludge production is determined according to the water inlet information; a determination module configured to determine a required instantaneous sludge parameter according to the instantaneous pollutant concentration, and to determine a required sludge increment according to the instantaneous sludge parameter and the previous sludge parameter; The control module is configured to control the amount of sewage entering the reaction tank to increase if the sludge increment is a negative increment; and to control the amount of sewage entering the reaction tank to decrease if the sludge increment is a positive increment; The sludge discharge module is configured to discharge the sludge according to the sludge production after sedimentation is completed.

7. The control device according to claim 6, characterized in that The acquisition module is further configured to acquire the current mud production rate; The determination module is further configured to determine the amount of mud produced according to the current mud production rate and water inflow information of the current treatment cycle.

8. A reaction system for an oxygen granular sludge process, characterized in that: Comprising the control device as claimed in claim 6 or 7.

9. A storage medium, characterized in that: A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps of the method for controlling the amount of sludge in an aerobic granular sludge process as described in any one of claims 1 to 5.

10. A server, characterized in that: include: one or more processors; Memory; as well as One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the method for controlling the amount of sludge in the aerobic granular sludge process according to any one of claims 1 to 5.

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