Residence community domestic sewage treating system and method

Abstract

The invention relates to a residence community domestic sewage treating system. The system comprises a black water collection system, an anaerobic acidification reaction tank, an anaerobic gasification reaction tank and an aerobic contact oxidation tank, the black water collection system is communicated with the lower portion of the anaerobic acidification reaction tank through a black water inlet pipe, an outlet of the anaerobic acidification reaction tank is communicated with an inlet of the anaerobic gasification reaction tank, an outlet of the anaerobic gasification reaction tank is communicated with an inlet of the aerobic contact oxidation tank, a brown water collection system is communicated at a position of the inlet of the aerobic contact oxidation tank, the outlet of the aerobic contact oxidation tank is communicated with an aerobic filter tower, a grey water collection system is arranged at a position of an inlet of the aerobic filter tower, a methane collection tank is communicated with the top of the anaerobic acidification reaction tank and the anaerobic gasification reaction tank, the methane collection tank is connected with a gas-fired boiler, the gas-fired boiler is connected into the anaerobic gasification reaction tank through a pipeline, and the inlet of the anaerobic gasification reaction tank is connected with an alkaline liquor adding system through the pipeline. The residence community domestic sewage treating system and a method have the advantages that the system is simple, the sewage treatment effect is good, the construction costs are low, and the land occupation is small.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a system and method for domestic sewage treatment in residential quarters. Background technique [0002] At present, the collection and treatment of sewage in most parts of our country adopts the centralized collection and treatment method, but the residential quarters built by remote industrial and mining enterprises far away from towns and cities, because they are far away from urban sewage treatment plants, the domestic sewage produced can only use septic tanks Such simple sewage treatment methods cannot meet the water reuse standard, which not only pollutes the environment, but also causes waste in areas where water resources are scarce. [0003] Domestic sewage is divided into three categories according to its source and characteristics: ① black water, including fecal sewage from toilets or toilets; ② brown water, mainly kitchen wastewater; ③ gray water, including l...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in order to solve the technical problems of long domestic sewage treatment process, many equipments and high operating costs in the prior art, a system and method for domestic sewage treatment in residential quarters can be provided, which can enter water in stages and carry out Sub-quality processing, greatly shortening the process and improving processing efficiency

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