Sewage treatment ecological system with multi-stage aeration tank

Abstract

The present invention provides a sewage treatment ecological system with a multi-stage aeration tank. The sewage treatment ecological system comprises a primary aeration tank and a secondary aerationtank, wherein the primary aeration tank comprises an inner tank, an outer tank and a filter tank which are of a concentric circle structure, and overflow holes are formed in the tank wall of the innertank; the secondary aeration tank comprises a descending area and an ascending area, a plurality of sewage inflow pipelines are laid at the top end of the descending area, the sewage inflow pipelinesare connected with a liquid outlet of the filtering tank through an inflow header pipe, and a plurality of water inlet holes are formed in the sewage inflow pipelines at intervals; the bottoms of theaeration branch pipes are connected with an aeration header pipe; and the aeration header pipe is connected with an oxygenation pump. By adopting a two-stage aeration structure of mechanical aerationand constructed wetland aeration, the plant survival pressure and blockage rate of constructed wetland aeration are reduced, the sewage treatment effect is further improved, the energy consumption ofsewage treatment is greatly reduced, and the operation of sewage treatment can be realized by only one booster pump and one oxygenation pump.

Description

technical field [0001] The invention specifically relates to a sewage treatment ecosystem with multi-stage aeration tanks. Background technique [0002] With the development of society, human beings have gradually increased their requirements on the environment, and the discharge standards for sewage have become more stringent. The technology of wastewater treatment is constantly developing, and the treatment of domestic wastewater is moving from cities to villages and towns. Due to the wide distribution of sewage in villages and towns, it is difficult to centralize treatment. The existing sewage treatment process, especially the sewage treatment of aeration tanks, relies on scale effect and high energy consumption. If mechanical aeration is used alone, low-power aeration devices It is difficult to achieve the aeration effect, and the artificial wetland aeration is used alone, the plants and the artificial wetland substrate lack artificial fine management, the plant survival...

AI Technical Summary

Problems solved by technology

Due to the wide distribution of sewage in villages and towns, it is difficult to centralize treatment. The existing sewage treatment process, especially the sewage treatment of aeration tanks, relies on scale effect and high energy consumption. If mechanical aeration is used alone, low-power aeration devices It is difficult to achieve the aeration effect, but the artificial wetland aeration is used alone, the plants and the artificial wetland substrate lack artificial fine management, the plant survival rate is low, and the substrate is prone to clogging

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