U-shaped overflow soil filtration treatment device for domestic sewage

Abstract

The invention discloses a U-shaped overflow soil filtration treatment device for domestic sewage. A water outlet of a sewage pretreatment subsystem is connected to a water inlet of a soil filtration treatment subsystem through an intersystem water distributing main pipe; a sewage pipeline is connected with a water inflow trash blocking device, an anaerobic hydrolysis fluidized bed and a sedimentation tank in turn, and a digestion tank is connected with a domestic sewage pipeline and a screen well; a front end of an oil separation tank is connected with a kitchen sewage pipe, while the rear end is connected with the screen well through a sewage pipe; the screen well is connected with the anaerobic hydrolysis fluidized bed; the water distributing main pipe is connected with a perforated water distributing branch pipe; a branch pipe is arranged at the water inlet to connect a lower carbon source supply main pipe; a carbon source supply control valve is arranged on the carbon source supply main pipe; and the carbon source supply main pipe is connected with carbon source supply branch pipes through a tee joint. The device has good pollutant treatment effect, is easy to operate and maintain, effectively purifies the domestic sewage, is compact and simple in structure, flexible in operation and small in occupied area, and is widely applied to projects.

Description

technical field [0001] The invention relates to the technical field of water pollution control, and more specifically to a U-shaped overflow soil infiltration treatment device for domestic sewage. This device includes a sewage pretreatment subsystem and a soil infiltration treatment subsystem, and is suitable for decentralized Treatment of domestic sewage. Background technique [0002] With the increase of population, the accelerated process of urbanization and the implementation of the total control measures of industrial point source pollution, residential pollution will gradually replace industrial pollution as the number one pollution factor of water bodies. In densely populated urban areas, it is undoubtedly the right choice to increase the collection coverage of the pipe network and improve the centralized sewage treatment capacity, but centralized sewage treatment cannot solve the problem of water environmental pollution in areas without pipe network coverage outside...

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Problems solved by technology

[0005] In recent years, extensive research has been carried out on the filling medium, pollutant purification mechanism, and operation regulation of soil infiltration systems at home and abroad. However, the current soil infiltration systems generally have low hydraulic load, easy clogging, and nitrogen and phosphorus removal The problem of inefficiency

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