Municipal domestic sewage treatment method

Abstract

The invention discloses a municipal domestic sewage treatment method. The method comprises the following steps: collecting domestic sewage to a sewage storage tank through a sewer pipe, discharging the domestic sewage stored to a certain water level to a filtering and mixing reactor, mixing and filtering the domestic sewage, discharging the filtered domestic sewage to a bioreactor, hydrolyzing and degrading the domestic sewage, allowing the hydrolyzed and degraded domestic sewage to flow to a precipitation tank, clarifying and filtering the hydrolyzed and degraded domestic sewage, disinfecting the clarified and filtered domestic sewage through an ultraviolet disinfection tank, and discharging the disinfected domestic sewage to a water discharge pipeline, a lake or a river. A small domestic sewage treatment system is built in a position nearby a living quarter, so the length of a domestic sewage laying pipeline and the complex degree of sewage pipelines are reduced, maintenance is convenient, and the fund is saved. The method has very good promotion and economy values.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a treatment method for urban domestic sewage. Background technique [0002] At present, the sewage treatment plants in our country are relatively concentrated. Every time a sewage treatment plant is built in a city, it will cost a lot of money. Most of these construction funds are used in the laying of sewage pipes. Finally, the follow-up capital expenditure is also very large, which mainly includes, first, the consumption of a large amount of manpower and material resources, second, the rainwater is mixed into domestic sewage, which greatly increases the treatment capacity of the sewage treatment plant, and third, the treatment The final sewage is directly discharged into rivers and lakes without secondary use. Contents of the invention [0003] The object of the present invention is to provide a treatment method for urban domestic sewage. The method is to build a small-scale dom...

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Problems solved by technology

[0002] At present, the sewage treatment plants in our country are relatively concentrated. Every time a sewage treatment plant is built in a city, it will cost a lot of money. Most of these construction funds are used in the laying of sewage pipes. Finally, the follow-up capital expenditure is also very large, which mainly includes, first, the consumption of a large amount of manpower and material resources, second, the rainwater is mixed into domestic sewage, which greatly increases the treatment capacity of the sewage treatment plant, and third, the treatment The final sewage is directly discharged into rivers and lakes without secondary use

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