Self-built sewage treatment system and device for communities

Abstract

The invention discloses a self-built sewage treatment system and device for communities. A primary settling tank is connected with an aeration type membrane biological reaction pool through a pipeline, and the aeration type membrane biological reaction pool is connected with a feeding pool through a pipeline. In the treatment process, first, domestic sewage of residents is led into the primary settling tank through a pipeline, water quality homogenization, sewage amount adjustment and load impact prevention are performed on the domestic sewage of the residents inside the primary settling tank, purified domestic sewage of the residents enters the aeration type membrane biological reaction pool through the pipeline, and immersed hollow fiber membranes are arranged inside the aeration type membrane biological reaction pool and play a role in solid-liquid separation on sludge through suction negative pressure; when the sewage inside the domestic sewage pool exceeds a critical value, PAC inside the feeding pool enters the aeration type membrane biological reaction pool, PAC and P in the sewage form chemical sediment which enters a sludge groove, and the solid-liquid separation action of the aeration type membrane biological reaction pool discharges treated sewage through a water outlet pipeline, so that purification treatment is completed.

Description

technical field [0001] The patent of the invention relates to a self-built sewage treatment system and device in a residential area, which belongs to the technical field of environmental engineering. Background technique [0002] At present, with the continuous advancement of the urbanization process, more and more large-scale high-rise residential areas have emerged, and the pollution degree of the domestic sewage of the residential area residents has the characteristics of time difference, relatively single and stable pollutants. Directly merging domestic sewage into the municipal government and entering the sewage treatment plant will increase the treatment load of the sewage treatment plant. At the same time, large-scale residential areas use a lot of water for greening and landscape. If a residential sewage treatment system can be developed, the domestic sewage will be treated and returned to the sewage treatment plant. The use of residential areas will definitely bring...

AI Technical Summary

Problems solved by technology

Nowadays, due to the large amount of kitchen and bathroom detergent used in domestic sewage, the traditional MBR process cannot achieve the goal of effluent lower than 0.5mg / L for high-P sewage. However, adding an independent treatment structure unit not only increases the facility cost but also does not In line with the practical requirements of the community's simple treatment system and small footprint, the existing domestic sewage treatment system in the community is still not perfect

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