CN-121990629-A - Dosing control method, system, equipment and medium for sewage treatment process

CN121990629ACN 121990629 ACN121990629 ACN 121990629ACN-121990629-A

Abstract

The invention provides a dosing control method, a system, equipment and a medium for a sewage treatment process, wherein the method comprises the following steps of obtaining multi-source heterogeneous data and processing the multi-source heterogeneous data to construct a high-dimensional state vector; the method comprises the steps of inputting a high-dimensional state vector into a dynamic prediction model of medicament demand to obtain a predicted concentration sequence, obtaining a target control instruction according to the current high-dimensional state vector and the predicted concentration sequence, sending the target control instruction to a controller of a target dosing pump, and performing dosing control through the controller. The method can reduce the medicament consumption to the maximum extent, reduce the operation cost, avoid secondary pollution and promote the automation and the intellectualization level of the operation of the whole sewage treatment system under the hard constraint of absolutely ensuring the stable and standard quality of the effluent.

Inventors

CHEN SHIJIE
Pi Zhiping
Xiao Shaolei
DAI JUNRONG
OU CHUNHUI

Assignees

昕彤赋能(长沙)人工智能行业应用系统有限公司

Dates

Publication Date: 20260508
Application Date: 20260408

Claims (10)

1. The dosing control method of the sewage treatment process is characterized by comprising the following steps of: Acquiring multi-source heterogeneous data, and processing the multi-source heterogeneous data to construct a high-dimensional state vector; Inputting the high-dimensional state vector into a medicament demand dynamic prediction model to obtain a predicted concentration sequence; acquiring a target control instruction according to the current high-dimensional state vector and the predicted concentration sequence; and sending the target control instruction to a controller of a target dosing pump, and performing dosing control through the controller.
2. The method for controlling dosing of a wastewater treatment process according to claim 1, wherein the steps of obtaining multi-source heterogeneous data and processing the multi-source heterogeneous data to construct a high-dimensional state vector comprise: Carrying out real-time cleaning on the multi-source heterogeneous data, and calculating key characteristics according to the cleaned multi-source heterogeneous data; And constructing the high-dimensional state vector representing the complete working condition of the system at the moment t according to the key features.
3. The dosing control method of a wastewater treatment process according to claim 1, wherein the inputting the high-dimensional state vector into a dynamic prediction model of a chemical demand to obtain a predicted concentration sequence comprises: Loading and running the agent in a pre-trained dynamic prediction model of the agent demand; And inputting the high-dimensional state vector and key driving factors into the agent demand dynamic prediction model containing the intelligent agent so as to obtain the predicted concentration sequence.
4. The dosing control method of a sewage treatment process according to claim 3, wherein the method for obtaining the key driving factor is as follows: And analyzing the historical process data through a causal feature discovery algorithm, identifying a process variable which has strong causal relation with the medicament demand, and taking the process variable as the key driving factor.
5. The method according to claim 1, wherein the obtaining the target control command according to the current high-dimensional state vector and the predicted concentration sequence specifically comprises: Inputting the current high-dimensional state vector and the predicted concentration sequence into a deep reinforcement learning strategy network to output a target adding action; And converting the target adding action into a target control instruction.
6. The dosing control method of a sewage treatment process according to claim 1, wherein the issuing of the target control command to a controller of a target dosing pump, through which dosing control is performed, specifically comprises: Issuing the target control instruction to a PLC or a frequency converter of the target dosing pump through an industrial network, and performing dosing control through the PLC or the frequency converter; The controller of the target dosing pump comprises the PLC or the frequency converter.
7. The dosing control method of a sewage treatment process according to claim 1, wherein the issuing of the target control instruction to the controller of the target dosing pump, after the dosing control by the controller, further comprises: And continuously collecting dosing data after the target control instruction is executed to form an experience tuple so as to update the medicament demand dynamic prediction model.
8. The dosing control system of the sewage treatment process is characterized by comprising a treatment module, an input module, an acquisition module and a control module; The processing module is used for acquiring multi-source heterogeneous data and processing the multi-source heterogeneous data to construct a high-dimensional state vector; the input module is used for inputting the high-dimensional state vector into a medicament demand dynamic prediction model so as to obtain a predicted concentration sequence; The acquisition module is used for acquiring a target control instruction according to the current high-dimensional state vector and the predicted concentration sequence; and the control module is used for sending the target control instruction to a controller of the target dosing pump, and performing dosing control through the controller.
9. An electronic device, comprising: At least one processor, and A memory communicatively coupled to the at least one processor, the memory storing a computer program executable by the at least one processor, the computer program being executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-7.
10. A computer readable storage medium, characterized in that the storage medium is for storing a computer program for causing a computer to perform the method of any one of claims 1-7.

Description

Dosing control method, system, equipment and medium for sewage treatment process Technical Field The invention relates to the technical field of sewage treatment, in particular to a dosing control method, a dosing control system, dosing control equipment and dosing control medium for a sewage treatment process. Background On the premise of absolutely guaranteeing that the water quality of the effluent is stable and reaches the standard, the cost of the ton water treatment medicament is minimized, and the requirement is that the traditional rough and lagged medicament feeding mode is needed to be technically realized, and the intelligent feeding mode with real-time, accuracy and predictability is spanned. The widely adopted medicament adding control scheme in the current sewage treatment industry mainly has the following problems: (1) The traditional manual experience control is that the person cannot continuously process massive real-time data and make optimal calculation, experience is difficult to standardize and inherit, so that personal experience of an operator is seriously relied on, and the setting of the adding amount is high in subjectivity and large in fluctuation. The frequency of regulation is low (usually once in a few hours), and minute-scale changes in water quality cannot be tracked. The quality of control declines at night or when the stamina is lost. (2) Feedforward/feedback control (e.g., classical PID) based on fixed parameters or simple ratios suffers from a lag in response and low control accuracy. PID control essentially compensates for "errors that have occurred". For the system of 'large inertia and large hysteresis' of sewage treatment, when an instrument detects that the phosphorus or nitrogen of the effluent exceeds the standard, the pollutant passes through the reaction tank, the dosage of the additional medicine is not supplemented in advance, and in order to prevent the exceeding standard, the higher adding standard is always forced to be maintained for a long time, so that waste is caused. (3) In the early stage or the single automatic feeding scheme, the automatic start and stop is realized, but the set value still needs to be manually given, or the set value is fed according to a fixed proportion only according to a single parameter (such as water inlet flow). The device cannot adapt to the time-varying characteristics of the inlet water concentration (COD and TP), waste is caused when the inlet water concentration is low, and the feeding is insufficient when the inlet water concentration is high. (4) The intelligent cooperation with the whole process is lacking, namely the dosing unit often operates in isolation, and the intelligent control system (if any) of other process units such as aeration, backflow, sludge discharge and the like lacks information intercommunication and strategy cooperation. For example, when the aeration agent optimization adjustment results in a change in nitrification, the carbon source requirements for denitrification change accordingly, and the independent dosing system is unable to sense and respond to such a change. In view of this, how to sense in real time, calculate accurately, and cooperate with other intelligent units of the whole sewage treatment process, and finally, the maximum cost saving potential is discovered while guaranteeing the absolute safety of water quality, which is a technical problem to be solved by those skilled in the art. Disclosure of Invention In order to solve the technical problems, the application aims to provide a dosing control method, a system, equipment and a medium for a sewage treatment process, which solve the problems of response lag, excessive or insufficient dosing, incapability of coping with water quality mutation, high operation cost and other industry pain points existing in the traditional manual experience control or simple PID control. The application can reduce the medicament consumption to the maximum extent, reduce the operation cost, avoid secondary pollution and promote the automation and the intelligent level of the operation of the whole sewage treatment system under the hard constraint of absolutely ensuring the water quality of the effluent to reach the standard (especially the key indexes such as total phosphorus, total nitrogen and the like). The first object of the invention is to provide a dosing control method of a sewage treatment process; the technical scheme provided by the invention is as follows: a dosing control method of a sewage treatment process comprises the following steps: Acquiring multi-source heterogeneous data, and processing the multi-source heterogeneous data to construct a high-dimensional state vector; Inputting the high-dimensional state vector into a medicament demand dynamic prediction model to obtain a predicted concentration sequence; acquiring a target control instruction according to the current high-dimensional state vector and the predicted concentration