Non-point source pollution control-based arterial drainage water quality regulation and control system and arterial drainage water quality regulation and control method

Abstract

The invention relates to a non-point source pollution control-based arterial drainage water quality regulation and control system and an arterial drainage water quality regulation and control method. The system comprises an arterial drainage which is divided into a plurality of control sections, a controller and a plurality of switching wells, wherein each control section has a most unfavorable control point provided with a liquid level instrument; the arterial drainage is provided with a plurality of water outlet pipes; all the switching wells are respectively communicated with the water outlet pipes in a way of one-to-one correspondence; each switching well is provided with a water inlet pipe and an overflow pipe, and is internally provided with a turbidity meter, a conductivity meter and an electric flashboard; each water inlet pipe is provided with a Doppler ultrasonic flow meter; the liquid level instruments, the turbidity meters, the conductivity meters, the electric flashboards and the Doppler ultrasonic flow meters are respectively connected with the controller. The system is simple in structure, convenient in implementation and low in engineering cost. According to the arterial drainage water quality regulation and control method, the system is utilized to calculate the flux of pollutant in the switching wells, and regulation and control are performed according to the principle that water in the switching wells with high flux of pollutant firstly enters the arterial drainage firstly and water in the switching wells with low flux of pollutant waits, so that the double-staggering peak adjustment of water quality and water quantity of the arterial drainage can be realized, and risk of waterlogging is reduced.

Description

technical field [0001] The invention relates to the field of rain and sewage treatment, in particular to a water quality control system for main drainage canals based on non-point source pollution control. Background technique [0002] At present, two drainage methods are often used in many places in our country. [0003] One is the interception-type combined drainage system used in the old urban area for mixed discharge of sewage and rainwater, see figure 2 , It sets the main intercepting pipe with a certain interception multiple. When the rainfall is small, rainwater and sewage enter the water treatment plant through the main intercepting pipe. When the rainfall is heavy, the mixed sewage that exceeds the pipeline load overflows into the river through the overflow pipe and is discharged. The advantage of the intercepting confluence system is that it saves investment, mixes domestic sewage, industrial wastewater and rainwater in the same pipeline (canal) system, and when t...

AI Technical Summary

Problems solved by technology

The advantage of the diversion system is that rainwater and sewage are treated separately, which reduces non-point source pollution and reduces the operating pressure of the sewage plant. The disadvantage is that two sets of drainage systems for rainwater and sewage are required, which occupy more underground space on the road and are expensive

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