Source tracing method and device for pollutant discharge of sewage draining exit, computing equipment and storage medium

Abstract

The invention discloses a sewage draining exit pollutant discharge tracing method and device, computing equipment and a storage medium. The method comprises the steps of constructing a water quality model based on a hydrodynamic force and water quality coupling equation; constructing a pollution source water quality response scene library by utilizing the water quality model; acquiring water quality monitoring data, and starting pollutant emission traceability analysis after monitoring that the pollutant concentration exceeds the standard; screening out a pollution source from a pollution source water quality response scene library according to the hydrological situation and the pollutant characteristics, and constructing a target database; constructing a population database by utilizing the target database, calculating each pollution source in the population according to the water quality model, and selecting the population which most conforms to the monitoring concentration through afitness function, wherein the population individuals comprise pollution source parameters needing to be identified. A method of coupling a water quality model and a genetic algorithm is utilized to carry out traceability search on a sewage draining exit and a pollution source which influence the section water quality, and the sewage draining exit which influences the section water quality is locked, so that the problems of traceability and environment of an actual problem section are effectively solved.

Description

technical field [0001] The present invention relates to the technical field of water environment, and more specifically, the present invention relates to a method, device, computing device and storage medium for traceability of pollutant discharge from sewage outlets. Background technique [0002] Basin water pollution incidents are water environment emergencies that cause water environment pollution, affect the normal function of water bodies, and damage normal production and life. In reservoirs, lakes, rivers and other water bodies, most of the sudden water pollution incidents are caused by pollutants on land being discharged into the water body, and the sewage outlet is the last gateway for all kinds of land pollutants to enter the water body. Source tracing is an important part of cutting off pollutant discharge from the source and holding polluting enterprises accountable. In recent years, various companies at home and abroad have carried out research on the traceabili...

AI Technical Summary

Problems solved by technology

[0003] The first is to trace the source through online monitoring monitoring equipment. This method includes: 1. Installing fixed monitoring equipment at the sewage outlet to monitor pollutant discharge; 2. Using mobile monitoring equipment to monitor the concentration of pollutants in the river. Find pollution sources; including monitoring ships, using drones and unmanned ships to trace water pollution sources; these methods of pollution traceability are simple, direct and efficient, and can quickly find the discharge location of water pollution sources, but the disadvantage is that they are expensive and not easy to promote. Restricted, suitable for relatively wide waters of the river

[0004] The second is to use the inversion method of hydrodynamic and water environment numerical models to trace the source of sewage outlets. Based on the control equations coupled with hydrodynamics and water quality, the inversion calculation of pollution source items is performed. Since the differential equation is highly ill-posed and nonlinear, There are many studies on this part, but limited by the concentration error of pollutants in the monitoring position, the diffusion coefficient of pollutants in river water, etc., the traceability accuracy needs to be improved. The advantages of this method are strong applicability, wide traceability, and low operation and maintenance costs in the later stage. Disadvantages At present, the accuracy of river traceability needs to be improved

[0005] The third is to use laser Raman online analysis spectroscopy to analyze the chemical substances emitted by pollution sources, and establish a pollutant chemical fingerprint database according to the chemical fingerprint characteristics of pollutants emitted by different pollution source enterprises. By comparing the chemical fingerprints and exceeding the standard concentration at monitoring points, Identify pollution source discharge outlets or enterprises, but the scope of application of this method is limited. First of all, if there are many pollution-related enterprises upstream, the workload of pollution source tracing will be relatively large, and it is difficult to complete the investigation and traceability of pollution sources in time; and pull Mann spectroscopy is limited in that it can only detect substances that trigger fluorescence. If there are pollutants with poor water solubility or sewage that may cause fluorescence quenching, the accuracy of fluorescence spectral analysis results is poor

Images