Three-stage intercepting well and control method thereof

Abstract

The invention discloses a three-stage intercepting well and a control method thereof. According to the three-stage intercepting well and the control method thereof, a three-stage intercepting well body is divided into a sewage bin and a classification bin through a partition wall; the classification bin is divided into a water outlet overflow channel, an initial rainwater intercepting channel anda dry weather flow sewage intercepting channel with the bottom level gradually decreased through a water outlet overflow weir and a dry weather flow sewage intercepting weir; the dry weather flow sewage intercepting channel is connected to a water inlet pipe and communicates with the sewage bin through a dry weather flow sewage hole; the initial rainwater intercepting channel is connected to an initial rainwater intercepting pipe and is connected to an initial rainwater regulation and storage treatment facility through the initial rainwater intercepting pipe; the water outlet overflow channelis connected to a water outlet pipe; the water outlet overflow weir is a downward-opening overflow weir; a horizontal arc-shaped grating is arranged at an upper opening of the water outlet overflow weir; a slag outlet hole is formed in the portion, on one side of the horizontal arc-shaped grating, of the partition wall; and during use, the dry weather flow sewage hole and the downward-opening overflow weir are opened or closed according to the weather conditions, and the water yield is controlled. The three-stage intercepting well and the control method thereof have the advantages that the three-stage intercepting function is set, so that the function of intercepting dry weather flow sewage and initial rainwater respectively can be achieved, and the sewage classification treatment can be realized.

Description

technical field [0001] The invention relates to the technical field of urban drainage, in particular to a three-stage interception well and a control method thereof. Background technique [0002] The rainwater pipe network system in the diversion drainage system is often mixed with a large amount of domestic sewage, and the domestic sewage flows into the river along with the rainwater pipes, causing pollution to the water quality of the river. In engineering, an interception well is often installed at the place where the rainwater pipe enters the river, and the dry domestic sewage mixed in the rainwater pipe is intercepted and transported to the sewage treatment plant for treatment. With the emphasis on the water environment in recent years, it has been found through research that the initial rainwater carries a large amount of pipeline silt and ground scour, which is also the main factor causing the deterioration of the water quality of the river. Therefore, it is necessary...

AI Technical Summary

Problems solved by technology

[0003] Traditional interception wells have a single function, and often only have one interception function, which cannot realize the graded interception function of different water quality, and cannot control the interception volume, resulting in the overload operation of the terminal sewage treatment plant in rainy days

At the same time, the regulation and storage capacity of the existing drainage pipe network cannot be utilized, resulting in large-scale and high-investment treatment facilities for initial rainwater interception, regulation and storage.

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