Carbon source adding method in sewage treatment

Abstract

The invention provides a carbon source adding method in sewage treatment. The method is applied to the technical field of sewage treatment and comprises the steps that the total amount of newly-added first nitrate and the concentration of newly-added first nitrate are calculated according to the water inlet time, the water inlet flow and the nitrate concentration of a water inlet main pipeline; calculating the total amount of a required first carbon source according to the newly added first nitrate concentration; according to the newly added first nitrate concentration and the first initial nitrate concentration in each biochemical pool, calculating to obtain a first target effluent nitrate concentration; if the first target effluent nitrate concentration is greater than or equal to an effluent nitrate concentration threshold value, calculating to obtain a first carbon source total addition amount according to the initial carbon source addition amount, the required first carbon source total amount and the corresponding water inlet flow of each biochemical pool; if the target effluent nitrate concentration is smaller than the effluent nitrate concentration threshold value, the carbon source adding amount is still the initial carbon source adding amount. In this way, abnormal water inflow of nitrate can be effectively handled, the accuracy of carbon source adding is improved, and the environmental protection risk is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of sewage treatment, and in particular to a method for adding a carbon source in sewage treatment. Background Art

[0002] In the process of sewage treatment, carbon source addition is one of the key links to improve treatment efficiency. The addition of carbon source can not only optimize the sewage treatment effect, but also help the system meet the emission standards. The organic matter in sewage is the main target of microbial treatment. These organic matters provide microorganisms with the energy and nutrition required for growth and reproduction. In some cases, the organic carbon concentration in sewage is not enough to support the effective degradation process of microorganisms. At this time, additional carbon source addition is required to supplement. If the carbon source in sewage is insufficient, the degradation ability of microorganisms will be limited, resulting in a decrease in treatment efficiency. By adding external carbon sources, the activity and degradation ability of microorganisms can be significantly improved, thereby effectively removing organic pollutants in sewage; in the nitrogen and phosphorus removal process, microorganisms need additional carbon sources to promote nitrification and denitrification processes, as well as phosphorus removal. Insufficient carbon sources may lead to low efficiency of denitrification and dephosphorization, and ultimately affect the effluent water quality. Through appropriate carbon source addition, these processes can be optimized and the sewage treatment effect can be improved; the addition of carbon sources can help maintain the stability and health of microbial communities and improve the adaptability of treatment systems to changes in sewage properties. Therefore, the addition of carbon sources in sewage treatment is of great significance.

[0003] The total nitrogen content in domestic sewage is generally 20-80 mg / L, of which organic nitrogen is 8-35 mg / L, ammonia nitrogen is 12-50 mg / L, and the nitrate nitrogen and nitrite nitrogen content is very low, with a total of <5 mg / L. When the biochemical system is continuously impacted by high nitrate inflow, the effluent quality will fluctuate violently. In order to ensure the effluent index, a large amount of carbon source needs to be added to the anoxic section of the biochemical pool. At present, in sewage treatment, carbon source is usually added manually in a quantitative manner, which is prone to problems such as untimely or inaccurate addition. Summary of the invention

[0004] The present invention provides a method for adding a carbon source in sewage treatment.

[0005] According to a first aspect of the present disclosure, a method for adding a carbon source in sewage treatment is provided. The method comprises:

[0006] During this abnormal water inflow, the total amount of first nitrate newly added during this abnormal water inflow is calculated according to the real-time acquired water inflow time, water inflow flow rate and nitrate concentration of the water inflow main pipe; wherein the abnormal water inflow indicates that the nitrate concentration of sewage in the water inflow main pipe is greater than the abnormal threshold value during the continuous sewage inflow into each biochemical pool; the water inflow main pipe simultaneously inflows water into each of the biochemical pools; according to the first total amount of nitrate, the newly added first nitrate concentration is calculated; according to the newly added first nitrate concentration, the required total amount of first carbon source is calculated; according to the newly added first nitrate concentration and the first initial nitrate concentration in each biochemical pool, the first target effluent nitrate concentration is calculated;

[0007] If the first target effluent nitrate concentration is greater than or equal to the effluent nitrate concentration threshold, the total amount of the first carbon source added is calculated according to the initial carbon source dosage, the required total amount of the first carbon source and the corresponding inlet flow rate of each biochemical pool; if the target effluent nitrate concentration is less than the effluent nitrate concentration threshold, the amount of carbon source added is still the initial carbon source dosage;

[0008] During the next abnormal water inflow, the total amount of the second nitrate added during the abnormal water inflow is calculated according to the real-time acquired water inflow time, water inflow flow rate and nitrate concentration of the water inflow main pipeline; the newly added second nitrate concentration is calculated according to the second total amount of nitrate; the required total amount of the second carbon source is calculated according to the newly added second nitrate concentration; the second target effluent nitrate concentration is calculated according to the newly added second nitrate concentration and the second initial nitrate concentration in each biochemical pool;

[0009] If the second target effluent nitrate concentration is greater than or equal to the effluent nitrate concentration threshold, the total amount of the second carbon source added is calculated based on the initial carbon source dosage, the required total amount of the first carbon source, the required total amount of the second carbon source and the corresponding inlet flow rate of each biochemical pool; if the target effluent nitrate concentration is less than the effluent nitrate concentration threshold, the amount of carbon source added is still the first total amount of carbon source added.

[0010] Furthermore, the calculation formula for the total amount of first nitrate added during the abnormal water inflow is:

[0011]

[0012] b is the total amount of first nitrate added during this abnormal water inflow; t is the water inflow time during this abnormal water inflow; h is the peak nitrate concentration during this abnormal water inflow; Q is the total water inflow flow during this abnormal water inflow; k 1 is the first coefficient.

[0013] Furthermore, the calculation formula of the newly added first nitrate concentration is:

[0014]

[0015] Δa is the concentration of the newly added first nitrate; b is the total amount of the newly added first nitrate during this abnormal water inflow; V is the total capacity of each biochemical pool; k 2 is the second coefficient.

[0016] Furthermore, the calculation formula for the total amount of the first carbon source is:

[0017]

[0018] M is the total amount of the first carbon source; q is the amount of COD required to remove 1 mg / L nitrate; Q is the total influent flow rate during this abnormal influent period; Δa is the newly added first nitrate concentration; ρ is the carbon source density; COD is the carbon source COD equivalent; k 3 is the third coefficient.

[0019] According to a second aspect of the present disclosure, a carbon source dosing device for sewage treatment is provided. The device comprises:

[0020] A first calculation module is used to calculate the first total amount of nitrate added during the abnormal water inflow period according to the real-time acquired water inflow time, water inflow flow rate and nitrate concentration of the water inflow main pipe during the abnormal water inflow period; wherein the abnormal water inflow means that the nitrate concentration of sewage in the water inflow main pipe is greater than the abnormal threshold value during the continuous sewage inflow process into each biochemical pool; the water inflow main pipe simultaneously inflows water into each of the biochemical pools; based on the first total amount of nitrate, calculate the newly added first nitrate concentration; based on the newly added first nitrate concentration, calculate the required total amount of the first carbon source; based on the newly added first nitrate concentration and the first initial nitrate concentration in each biochemical pool, calculate the first target effluent nitrate concentration;

[0021] A first determination module is used to calculate the total amount of first carbon source dosage according to the initial carbon source dosage, the required total amount of the first carbon source and the corresponding water inlet flow of each biochemical pool if the first target effluent nitrate concentration is greater than or equal to the effluent nitrate concentration threshold; if the target effluent nitrate concentration is less than the effluent nitrate concentration threshold, the amount of carbon source dosage is still the initial carbon source dosage;

[0022] The second calculation module is used to calculate the total amount of second nitrate added during the next abnormal water inflow period according to the water inflow time, water inflow flow rate and nitrate concentration of the water inflow main pipeline acquired in real time; calculate the newly added second nitrate concentration according to the second total amount of nitrate; calculate the required total amount of second carbon source according to the newly added second nitrate concentration; calculate the second target effluent nitrate concentration according to the newly added second nitrate concentration and the second initial nitrate concentration in each biochemical pool;

[0023] The second determination module is used to calculate the total amount of second carbon source addition based on the initial carbon source addition amount, the required total amount of the first carbon source, the required total amount of the second carbon source and the corresponding water inlet flow of each biochemical pool if the second target effluent nitrate concentration is greater than or equal to the effluent nitrate concentration threshold; if the target effluent nitrate concentration is less than the effluent nitrate concentration threshold, the amount of carbon source addition is still the first carbon source total amount.

[0024] According to a third aspect of the present disclosure, an electronic device is provided. The electronic device includes: a memory and a processor, wherein a computer program is stored in the memory, and the method is implemented when the processor executes the program.

[0025] According to a fourth aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, and the program implements the method when executed by a processor.

[0026] According to an embodiment of the present invention, by acquiring the influent flow rate and nitrate concentration in real time, abnormal influent conditions can be quickly identified, so that timely measures can be taken to ensure the effectiveness of the water treatment process; calculations based on real-time data can accurately evaluate the total amount and concentration of newly added nitrates, ensuring that the subsequent carbon source dosage meets actual needs, avoiding waste of resources, improving the accuracy of carbon source dosage, and reducing environmental risks; according to the actual conditions during different abnormal influent periods, the carbon source dosage is dynamically adjusted to optimize the sewage treatment process and improve the effluent water quality; by setting the effluent nitrate concentration threshold, the effluent quality can be effectively controlled to ensure that the final effluent meets environmental protection standards; if the target effluent concentration is lower than the threshold, the initial carbon source dosage is maintained to avoid unnecessary excessive dosage and reduce operating costs.

[0027] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0029] Figure 1 A flow chart showing a method for adding a carbon source in sewage treatment according to an embodiment of the present disclosure is shown;

[0030] Figure 2 A block diagram of a carbon source dosing device for sewage treatment according to an embodiment of the present disclosure is shown;

[0031] Figure 3 A block diagram of an exemplary electronic device capable of implementing embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0033] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0034] Figure 1 A flow chart of a method for adding a carbon source in sewage treatment according to an embodiment of the present disclosure is shown, the method comprising:

[0035] S101, during this abnormal water inflow, according to the real-time acquired water inflow time, water inflow flow rate and nitrate concentration of the water inflow main pipe, calculate the total amount of first nitrate added during this abnormal water inflow; wherein, the abnormal water inflow means that the nitrate concentration of sewage in the water inflow main pipe is greater than the abnormal threshold value during the continuous sewage inflow into each biochemical pool; the water inflow main pipe simultaneously inflows water into each of the biochemical pools; according to the first total amount of nitrate, calculate the newly added first nitrate concentration; according to the newly added first nitrate concentration, calculate the required total amount of first carbon source; according to the newly added first nitrate concentration and the first initial nitrate concentration in each biochemical pool, calculate the first target effluent nitrate concentration;

[0036] In some embodiments, the calculation formula for the total amount of first nitrate added during the abnormal water inflow is:

[0037]

[0038] b is the total amount of additional first nitrate during this abnormal water inflow (in grams); t is the water inflow time during this abnormal water inflow (in hours); h is the peak nitrate concentration during this abnormal water inflow (in milligrams per liter); Q is the total water inflow flow during this abnormal water inflow (in cubic meters per hour).

[0039] In some embodiments, the calculation formula for the newly added first nitrate concentration is:

[0040]

[0041] Δa is the newly added first nitrate concentration (in milligrams per liter); b is the total amount of first nitrate added during this abnormal water inflow (in grams); V is the total capacity of each biochemical pool (in cubic meters).

[0042] In some embodiments, the total amount of the first carbon source is calculated as:

[0043]

[0044] M is the total amount of the first carbon source (in tons per day); q is the amount of COD required to remove 1 mg / L nitrate; Q is the total influent flow rate during this abnormal influent period (in cubic meters per hour); Δa is the newly added first nitrate concentration (in milligrams per liter); ρ is the carbon source density (in grams per cubic meter); COD is the carbon source COD equivalent (in milligrams per liter).

[0045] S102, if the first target effluent nitrate concentration is greater than or equal to the effluent nitrate concentration threshold, the total amount of the first carbon source added is calculated according to the initial carbon source dosage, the required total amount of the first carbon source and the corresponding inlet flow rate of each biochemical pool; if the target effluent nitrate concentration is less than the effluent nitrate concentration threshold, the amount of carbon source added is still the initial carbon source dosage;

[0046] S103, during the next abnormal water inflow period, according to the water inflow time, water inflow flow rate and nitrate concentration of the water inflow main pipeline acquired in real time, calculate the total amount of second nitrate added during the abnormal water inflow period; calculate the newly added second nitrate concentration according to the second total amount of nitrate; calculate the required total amount of second carbon source according to the newly added second nitrate concentration; calculate the second target effluent nitrate concentration according to the newly added second nitrate concentration and the second initial nitrate concentration in each biochemical pool;

[0047] S104, if the second target effluent nitrate concentration is greater than or equal to the effluent nitrate concentration threshold, the total amount of the second carbon source added is calculated according to the initial carbon source dosage, the required total amount of the first carbon source, the required total amount of the second carbon source and the corresponding inlet flow rate of each biochemical pool; if the target effluent nitrate concentration is less than the effluent nitrate concentration threshold, the amount of carbon source added is still the first carbon source total amount.

[0048] According to an embodiment of the present invention, by acquiring the influent flow rate and nitrate concentration in real time, abnormal influent conditions can be quickly identified, so that timely measures can be taken to ensure the effectiveness of the water treatment process; calculations based on real-time data can accurately evaluate the total amount and concentration of newly added nitrates, ensuring that the subsequent carbon source dosage meets actual needs, avoiding waste of resources, and improving the accuracy of carbon source dosage; according to the actual conditions during different abnormal influent periods, the carbon source dosage is dynamically adjusted to optimize the sewage treatment process and improve the effluent water quality; by setting the effluent nitrate concentration threshold, the effluent quality can be effectively controlled to ensure that the final effluent meets environmental protection standards; if the target effluent concentration is lower than the threshold, the initial carbon source dosage is maintained to avoid unnecessary excessive dosage and reduce operating costs.

[0049] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present disclosure is not limited by the order of the actions described, because according to the present disclosure, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present disclosure.

[0050] The above is an introduction to the method embodiment. The following is a further explanation of the scheme disclosed in the present invention through an apparatus embodiment.

[0051] Figure 2 A block diagram of a carbon source dosing device for sewage treatment according to an embodiment of the present disclosure is shown, the device comprising:

[0052] The first calculation module 201 is used to calculate the first total amount of nitrate added during the abnormal water inflow period according to the real-time acquired water inflow time, water inflow flow rate and nitrate concentration of the water inflow main pipe during the abnormal water inflow period; wherein the abnormal water inflow means that the nitrate concentration of sewage in the water inflow main pipe is greater than the abnormal threshold value during the continuous sewage inflow process into each biochemical pool; the water inflow main pipe simultaneously inflows water into each of the biochemical pools; according to the first total amount of nitrate, calculate the newly added first nitrate concentration; according to the newly added first nitrate concentration, calculate the required total amount of the first carbon source; according to the newly added first nitrate concentration and the first initial nitrate concentration in each biochemical pool, calculate the first target effluent nitrate concentration;

[0053] The first determination module 202 is used to calculate the total amount of the first carbon source dosage according to the initial carbon source dosage, the required total amount of the first carbon source and the corresponding water inlet flow of each biochemical pool if the first target effluent nitrate concentration is greater than or equal to the effluent nitrate concentration threshold; if the target effluent nitrate concentration is less than the effluent nitrate concentration threshold, the amount of the carbon source dosage is still the initial carbon source dosage;

[0054] The second calculation module 203 is used to calculate the second total amount of nitrate added during the next abnormal water inflow period according to the water inflow time, water inflow flow rate and nitrate concentration of the water inflow main pipeline acquired in real time; calculate the newly added second nitrate concentration according to the second total amount of nitrate; calculate the required total amount of second carbon source according to the newly added second nitrate concentration; calculate the second target effluent nitrate concentration according to the newly added second nitrate concentration and the second initial nitrate concentration in each biochemical pool;

[0055] The second determination module 204 is used to calculate the total amount of the second carbon source added according to the initial carbon source dosage, the required total amount of the first carbon source, the required total amount of the second carbon source and the corresponding inlet flow rate of each biochemical pool if the second target effluent nitrate concentration is greater than or equal to the effluent nitrate concentration threshold; if the target effluent nitrate concentration is less than the effluent nitrate concentration threshold, the amount of carbon source added is still the first carbon source total amount.

[0056] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the described module can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0057] In the technical solution disclosed herein, the acquisition, storage and application of user personal information involved are in compliance with the provisions of relevant laws and regulations and do not violate public order and good morals.

[0058] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device and a readable storage medium.

[0059] Figure 3 A schematic block diagram of an electronic device that can be used to implement an embodiment of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present disclosure described and / or required herein.

[0060] The electronic device includes a computing unit 301, which can perform various appropriate actions and processes according to a computer program stored in a ROM 302 or a computer program loaded from a storage unit 308 into a RAM 303. In the RAM 303, various programs and data required for the operation of the electronic device can also be stored. The computing unit 301, the ROM 302, and the RAM 303 are connected to each other via a bus 304. An I / O interface 305 is also connected to the bus 304.

[0061] A number of components in the electronic device are connected to the I / O interface 305, including: an input unit 306, such as a keyboard, a mouse, etc.; an output unit 307, such as various types of displays, speakers, etc.; a storage unit 308, such as a disk, an optical disk, etc.; and a communication unit 309, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 309 allows the electronic device to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0062] The computing unit 301 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 301 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The computing unit 301 performs the various methods and processes described above, such as the carbon source dosing method in sewage treatment. For example, in some embodiments, the carbon source dosing method in sewage treatment may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit 308. In some embodiments, part or all of the computer program may be loaded and / or installed on an electronic device via ROM 302 and / or a communication unit 309. When the computer program is loaded into RAM 303 and executed by the computing unit 301, one or more steps of the carbon source dosing method in sewage treatment described above may be performed. Alternatively, in other embodiments, the computing unit 301 may be configured to execute the carbon source addition method in sewage treatment by any other appropriate means (eg, by means of firmware).

[0063] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations may include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0064] The program code for implementing the method of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0065] In the context of the present disclosure, a readable storage medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A readable storage medium may be a machine-readable signal medium or a machine-readable storage medium. A readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any suitable combination of the foregoing. More specific examples of readable storage media may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0066] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0067] The systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communications network). Examples of communications networks include: a local area network (LAN), a wide area network (WAN), and the Internet.

[0068] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship of client and server is generated by computer programs running on respective computers and having a client-server relationship with each other. The server may be a cloud server, a server of a distributed system, or a server combined with a blockchain.

[0069] It should be understood that the above-mentioned various forms of processes can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired results of the technical solution of this disclosure can be achieved, and this document does not limit this.

[0070] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A method for adding a carbon source in sewage treatment, characterized in that: include: During this abnormal water inflow, the total amount of first nitrate newly added during this abnormal water inflow is calculated according to the real-time acquired water inflow time, water inflow flow rate and nitrate concentration of the water inflow main pipe; wherein the abnormal water inflow indicates that the nitrate concentration of sewage in the water inflow main pipe is greater than the abnormal threshold value during the continuous sewage inflow into each biochemical pool; the water inflow main pipe simultaneously inflows water into each of the biochemical pools; according to the first total amount of nitrate, the newly added first nitrate concentration is calculated; according to the newly added first nitrate concentration, the required total amount of first carbon source is calculated; according to the newly added first nitrate concentration and the first initial nitrate concentration in each biochemical pool, the first target effluent nitrate concentration is calculated; If the first target effluent nitrate concentration is greater than or equal to the effluent nitrate concentration threshold, the total amount of the first carbon source added is calculated according to the initial carbon source dosage, the required total amount of the first carbon source and the corresponding inlet flow rate of each biochemical pool; if the target effluent nitrate concentration is less than the effluent nitrate concentration threshold, the amount of carbon source added is still the initial carbon source dosage; During the next abnormal water inflow, the total amount of the second nitrate added during the abnormal water inflow is calculated according to the real-time acquired water inflow time, water inflow flow rate and nitrate concentration of the water inflow main pipeline; the newly added second nitrate concentration is calculated according to the second total amount of nitrate; the required total amount of the second carbon source is calculated according to the newly added second nitrate concentration; the second target effluent nitrate concentration is calculated according to the newly added second nitrate concentration and the second initial nitrate concentration in each biochemical pool; If the second target effluent nitrate concentration is greater than or equal to the effluent nitrate concentration threshold, the total amount of the second carbon source added is calculated based on the initial carbon source dosage, the required total amount of the first carbon source, the required total amount of the second carbon source and the corresponding inlet flow rate of each biochemical pool; if the target effluent nitrate concentration is less than the effluent nitrate concentration threshold, the amount of carbon source added is still the first total amount of carbon source added.

2. The method for adding a carbon source in sewage treatment according to claim 1, characterized in that: The calculation formula for the total amount of first nitrate added during the abnormal water inflow is: b is the total amount of first nitrate added during this abnormal water inflow; t is the water inflow time during this abnormal water inflow; h is the peak nitrate concentration during this abnormal water inflow; Q is the total water inflow flow during this abnormal water inflow; k1 is the first coefficient.

3. The method for adding a carbon source in sewage treatment according to claim 2, characterized in that: The calculation formula of the newly added first nitrate concentration is: Δa is the newly added first nitrate concentration; b is the total amount of first nitrate added during this abnormal water inflow; V is the total capacity of each biochemical pool; k2 is the second coefficient.

4. The method for adding a carbon source in sewage treatment according to claim 3, characterized in that: The calculation formula for the total amount of the first carbon source is: M is the total amount of the first carbon source; q is the amount of COD required to remove 1 mg / L nitrate; Q is the total influent flow rate during this abnormal influent period; Δa is the newly added first nitrate concentration; ρ is the carbon source density; COD is the carbon source COD equivalent; k3 is the third coefficient.

5. A carbon source dosing device for sewage treatment, characterized in that: include: A first calculation module is used to calculate the first total amount of nitrate added during the abnormal water inflow period according to the real-time acquired water inflow time, water inflow flow rate and nitrate concentration of the water inflow main pipe during the abnormal water inflow period; wherein the abnormal water inflow means that the nitrate concentration of sewage in the water inflow main pipe is greater than the abnormal threshold value during the continuous sewage inflow process into each biochemical pool; the water inflow main pipe simultaneously inflows water into each of the biochemical pools; based on the first total amount of nitrate, calculate the newly added first nitrate concentration; based on the newly added first nitrate concentration, calculate the required total amount of the first carbon source; based on the newly added first nitrate concentration and the first initial nitrate concentration in each biochemical pool, calculate the first target effluent nitrate concentration; A first determination module is used to calculate the total amount of first carbon source dosage according to the initial carbon source dosage, the required total amount of the first carbon source and the corresponding water inlet flow of each biochemical pool if the first target effluent nitrate concentration is greater than or equal to the effluent nitrate concentration threshold; if the target effluent nitrate concentration is less than the effluent nitrate concentration threshold, the amount of carbon source dosage is still the initial carbon source dosage; The second calculation module is used to calculate the total amount of second nitrate added during the next abnormal water inflow period according to the water inflow time, water inflow flow rate and nitrate concentration of the water inflow main pipeline acquired in real time; calculate the newly added second nitrate concentration according to the second total amount of nitrate; calculate the required total amount of second carbon source according to the newly added second nitrate concentration; calculate the second target effluent nitrate concentration according to the newly added second nitrate concentration and the second initial nitrate concentration in each biochemical pool; The second determination module is used to calculate the total amount of second carbon source addition based on the initial carbon source addition amount, the required total amount of the first carbon source, the required total amount of the second carbon source and the corresponding water inlet flow of each biochemical pool if the second target effluent nitrate concentration is greater than or equal to the effluent nitrate concentration threshold; if the target effluent nitrate concentration is less than the effluent nitrate concentration threshold, the amount of carbon source addition is still the first carbon source total amount.

6. An electronic device, characterized in that: include: at least one processor; A memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor so that the at least one processor can execute the method of any one of claims 1-4.

7. A non-transitory computer-readable storage medium storing computer instructions, characterized in that: The computer instructions are used to cause the computer to execute the method according to any one of claims 1-4.

Images