Rainwater-controlled sewage discharge device

Abstract

The invention belongs to sewage treatment technology and relates to a rainwater-controlled sewage discharge device for domestic sewage discharge treatment. The rainwater-controlled sewage discharge device comprises a sewage pipe, a rainwater collecting box and a total water discharge pipe, wherein a regulation and storage pool is arranged between a water outlet of the sewage pipe and the total water discharge pipe; the water outlet of the sewage pipe is positioned above an opening of the regulation and storage pool; a water outlet at the bottom of the regulation and storage pool is connected with the total water discharge pipe; the bottom of the rainwater collecting box is connected with a control water pipe; the control water pipe is used for controlling to open or close a first pressure control valve through a water pipe; when water is stored in the rainwater collecting box and the control water pipe, the first pressure control valve is closed by the water pressure; the first pressure control valve is positioned between the water outlet of the regulation and storage pool and the total water discharge pipe; the middle section of the control water pipe is connected with a rainwater pipe through a section of branched water pipe; and the tail end of the rainwater pipe is directly connected with the total water discharge pipe. The rainwater-controlled sewage discharge device can discharge the sewage and the rainwater respectively, can effectively treat production sewage and can avoid pollution caused by mixed discharge.

Description

technical field [0001] The invention belongs to sewage treatment technology, and relates to a sewage discharge treatment device for rainwater control for domestic sewage discharge treatment. Background technique [0002] There are two types of urban drainage systems: confluence system and diversion system. At present, most of the newly built and rebuilt municipal drainage pipes in our country adopt the diversion system, that is, the newly built pipes adopt the separation of rain and sewage, and two pipes are built, and the rain and sewage are discharged separately; This is current normal practice. But the cost is very high, especially when there is no place to bury pipelines during the renovation of the old city. The combined sewage discharge system is the combined discharge of sewage and rainwater. Under normal circumstances, the sewage is directly transported to the sewage treatment plant through the discharge pipeline. However, under heavy rain conditions, due to the co...

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Problems solved by technology

But the cost is high, especially when there is no place to bury pipelines during the renovation of the old city

The combined sewage discharge system is the combined discharge of sewage and rainwater. Under normal circumstances, the sewage is directly transported to the sewage treatment plant through the discharge pipeline. However, under heavy rain conditions, due to the confluence of rainwater and sewage, the amount of discharged water increases significantly, and the sewage The treatment plant cannot completely treat it, so it can only discharge a large amount of mixed sewage and rainwater directly into it, causing pollution of the river environment

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