Sludge amount control method, device, reaction system, storage medium and server in aerobic granular sludge process

Abstract

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. The control method includes: obtaining the previous sludge parameters during the aeration stage of the previous treatment cycle; during 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 moment of the current treatment cycle; determining the required instantaneous sludge parameters based on the instantaneous pollutant concentration; determining the required sludge increment based on the instantaneous sludge parameters and the previous sludge parameters; if the sludge increment is a negative increment, controlling the increase in the amount of sewage entering the reaction tank; if the sludge increment is a positive increment, controlling the decrease in the amount of sewage entering the reaction tank; after completing the water inlet, obtaining the water inlet information of the current treatment cycle, and determining the sludge production based on the water inlet information; after sedimentation is completed, discharging the sludge according to the sludge production.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge amount measurement and control, in particular to a method, device, storage medium and server for controlling 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 existing technology, 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 the 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 the biochemical operation. Summary of the Invention

[0003] In response to 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 moment is obtained;

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

[0008] determining a required sludge increment based on the instantaneous sludge parameter and the previous sludge parameter;

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

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

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

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

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

[0014] Get the current sludge production rate;

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

[0016] Optionally, after discharging the sludge according to the sludge production rate, 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 determining of required instantaneous sludge parameters according to the instantaneous pollutant concentration includes:

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

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

[0022] The instantaneous sludge parameters required at the current collection moment are calculated based on 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] An acquisition module obtains the previous sludge parameters during the aeration phase of the previous treatment cycle; during the water inlet phase of the current treatment cycle, obtains the instantaneous pollutant concentration of the sewage in the water inlet pipe at the current collection moment; after the water inlet is completed, obtains the water inlet condition information of the current treatment cycle and determines the sludge production based on the water inlet condition information;

[0026] a determination module 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;

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

[0028] The sludge discharge module is configured to discharge 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 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 This is a flow chart of a method for controlling the amount of sludge in an aerobic granular sludge process;

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

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

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

[0042] Figure 5 This is a block diagram of a sludge quantity control device in an aerobic granular sludge process;

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

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts 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 granulation, the sludge exhibits characteristics such as biological density, high relative density, and fast sedimentation rate. Compared with traditional biochemical treatment technology, the AGS process can maintain a sludge concentration of more than 2 times, thereby effectively reducing the biochemical reaction time and saving space. In addition, the AGS process does not require the configuration of dynamic equipment such as sludge return, mixed liquor return, anaerobic anoxic mixing, and scrapers 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, improving the degree of sludge granulation by screening and discharging excess sludge is the key to commissioning and operation. Therefore, the discharge of excess 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 where the aerobic granular sludge process is implemented. The water inlet pipe, clean water pipe, and sludge discharge pipe are connected to the reaction tank respectively. The data collection devices include flow sensors, organic matter concentration sensors, solids concentration sensors, pH meters, liquid level meters, etc. The control device controls the parameters in the reaction tank by acquiring the parameters collected by the flow sensors, organic matter concentration sensors, solids concentration sensors, pH meters, liquid level meters, etc., to achieve regulation and monitoring of the entire system.

[0046] In the existing technology, sludge is discharged regularly after each treatment cycle is completed. However, the amount of sludge that needs to be discharged at the time is not suitable for the influent water quality of the current treatment cycle. That is, the existing technology does not consider the relationship between the fluctuation of the incoming water quality and the residual sludge discharge, which will result in too little or too much sludge discharge, affecting the stability of the 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 during 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 moment;

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

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

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

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

[0054] S300, after the water inflow is completed, obtaining water inflow information of the current treatment cycle, and determining the sludge production according to the water inflow 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 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 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 moment is obtained; the required instantaneous sludge parameters are determined based on the instantaneous pollutant concentration; the required sludge increment is determined based on the instantaneous sludge parameters and the previous sludge parameters. 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 enters the next treatment cycle.

[0060] Combine 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 inlet volume 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 sludge production amount according to the water inflow information includes:

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

[0063] S420: Determine the amount of sludge produced based on the current sludge production rate and water inflow information of the current treatment cycle.

[0064] In this embodiment, the current sludge production rate corresponds to the previous sludge parameter. For example, if the sludge concentration is 8000 mg / l, the corresponding current sludge production rate is 0.4, which means that 0.4 kg of organic sludge is produced for every kg of COD removed. The influent information for the current cycle represents the total amount of pollutants entering. The sludge production amount is obtained by multiplying the sludge production 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 rate, the control method further includes:

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

[0067] S520 amends the current sludge production rate according to the current sludge parameter and the previous sludge parameter to obtain the sludge production rate for the next treatment cycle.

[0068] During the actual operation process, there is a certain error between the amount of discharged sludge and the calculated sludge production. Therefore, the sludge parameters after the sludge is discharged are not the sludge parameters of the previous cycle. Therefore, after the sludge is discharged, the sludge parameters will change. 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 moment based on the instantaneous pollutant concentration;

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

[0072] S223: Calculate the instantaneous sludge parameters required at the current collection moment 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 every preset time; when water is taken in 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; and 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 used 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 inflow; the theoretical water inflow is the preset water inflow for the current treatment cycle. The instantaneous sludge parameter required at the current collection moment is calculated according to the total amount of pollutants; in this embodiment, the instantaneous sludge parameter corresponding to the current collection moment is compared with the previous sludge parameter to determine the sludge increment; 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 aeration is completed, the amount of sewage entering the reaction tank needs to be increased at this time so that the sewage entering the reaction tank can match the current sludge situation as much as possible; if the sludge increment is a positive increment, it means that mud needs to be added instantaneously, but there is no situation of adding sludge to the reaction tank, so the amount of sewage entering the reaction tank needs to be reduced 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 based on the instantaneous sludge parameter (sludge load refers to the amount of pollutants that can be tolerated per unit time); then, based on 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 based on 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] Acquisition module 10 acquires the previous sludge parameters during the aeration phase of the previous treatment cycle; acquires the instantaneous pollutant concentration of the sewage in the water inlet pipe at the current acquisition moment during the water inlet phase of the current treatment cycle; acquires water inlet information of the current treatment cycle after the water inlet is completed, and determines the sludge production based on 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 volume 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, including the control device as described above.

[0084] Specifically, please refer to Figure 6 The following is a schematic diagram of the structure of a server provided by one embodiment of the present invention. The server includes a central processing unit (CPU), system memory including random access memory (RAM) and read-only memory (ROM), and a system bus connecting the system memory and the CPU. The server also includes a basic input / output system (I / O) system that facilitates information transmission between various components within the computer, and a mass 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 input devices such as a mouse and keyboard for user input. The display and input devices are connected to the central processing unit via 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 input from a variety of other devices such as a keyboard, mouse, or electronic stylus. Similarly, the input / output controller also provides output to a display screen, 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. In other words, the mass storage device may include a computer-readable medium (not shown) such as a hard disk or 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, tape cassettes, magnetic tape, 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-mentioned ones. The above-mentioned system memory and mass storage devices can 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 a network such as the Internet for operation. That is, the server can be connected to the network via a network interface unit connected to the system bus, or the server can be connected to other types of networks or remote computer systems (not shown) using the network interface unit.

[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 moment is obtained;

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

[0094] determining a required sludge increment based on the instantaneous sludge parameter and the previous sludge parameter;

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

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

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

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

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

[0100] Get the current sludge production rate;

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

[0102] Optionally, after discharging the sludge according to the sludge production rate, 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 determining of required instantaneous sludge parameters according to the instantaneous pollutant concentration includes:

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

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

[0108] The instantaneous sludge parameters required at the current collection moment are calculated based on 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] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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 stage of the previous treatment cycle; 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 moment is obtained; determining required instantaneous sludge parameters according to the instantaneous pollutant concentration; determining a required sludge increment based on the instantaneous sludge parameter and the previous sludge parameter; If the sludge increment is negative, the amount of sewage entering the reaction tank is controlled to increase; If the sludge increment is positive, the amount of sewage entering the reaction tank is controlled to be reduced; After the water inflow is completed, the water inflow information of the current treatment cycle is obtained, and the sludge production is determined according to the water inflow information; After sedimentation is completed, the sludge is discharged according to the sludge production; Wherein, the instantaneous sludge parameters required for determining the instantaneous pollutant concentration include: Calculating an average pollutant concentration corresponding to the current collection moment based on the instantaneous pollutant concentration; wherein the average pollutant concentration is obtained by averaging the instantaneous pollutant concentrations of all collection moments before the current collection moment in the processing cycle and the pollutant concentration at the current collection moment; Calculate the total amount of pollutants corresponding to the current collection time based on the average pollutant concentration and the theoretical water inflow; Calculating the instantaneous sludge parameters required at the current collection moment according to the total amount of pollutants; 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.

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

3. The control method according to claim 2, wherein: After discharging the sludge according to the sludge production rate, the control method further includes: 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. A device for controlling the amount of sludge in an aerobic granular sludge process, characterized in that: include: An acquisition module obtains the previous sludge parameters during the aeration phase of the previous treatment cycle; during the water inlet phase of the current treatment cycle, obtains the instantaneous pollutant concentration of the sewage in the water inlet pipe at the current collection moment; after the water inlet is completed, obtains the water inlet condition information of the current treatment cycle and determines the sludge production based on the water inlet condition information; a determination module 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; a control module configured to control an increase in the amount of sewage entering the reaction tank if the sludge increment is a negative increment; and to control a decrease in the amount of sewage entering the reaction tank if the sludge increment is a positive increment; A sludge discharge module configured to discharge sludge according to the sludge production after sedimentation is completed; Wherein, the instantaneous sludge parameters required for determining the instantaneous pollutant concentration include: Calculating an average pollutant concentration corresponding to the current collection moment based on the instantaneous pollutant concentration; wherein the average pollutant concentration is obtained by averaging the instantaneous pollutant concentrations of all collection moments before the current collection moment in the processing cycle and the pollutant concentration at the current collection moment; Calculate the total amount of pollutants corresponding to the current collection time based on the average pollutant concentration and the theoretical water inflow; Calculating the instantaneous sludge parameters required at the current collection moment according to the total amount of pollutants; 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.

5. The control device according to claim 4, wherein: The acquisition module is further configured to obtain 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.

6. A reaction system for an oxygen granular sludge process, characterized in that: Comprising the control device according to claim 4 or 5.

7. 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 claimed in any one of claims 1 to 3.

8. A server, characterized in that: include: one or more processors; Memory; as well as 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 according to any one of claims 1 to 3.

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