System for treatment and recycling of courtyard domestic sewage and method for treatment of sewage

Abstract

The invention relates to a system for the treatment and the recycling of courtyard domestic sewage and a method for the treatment of sewage. The system comprises a grid, a grease-separating regulating reservoir, a sequencing batch biofilm reactor, a filter tank and an ultraviolet disinfector, wherein the grid is arranged at a water inlet of a settling chamber of the grease-separating regulating reservoir; a water outlet of a sewage chamber of the grease-separating regulating reservoir is communicated with a water inlet of the sequencing batch biofilm reactor via a pipeline; a water outlet pipeline of the sequencing batch biofilm reactor is communicated with a water inlet of the filter tank; and a water outlet of the filter tank is communicated, via pipeline, with a reservoir equipped withthe ultraviolet disinfector. The grid intercepts solid wastes; the grease-separating regulating reservoir separates grease pollutants from water; the sequencing batch biofilm reactor can effectively remove organic pollutants, ammonia nitrogen, total suspended solids, and the like. in sewage; and the ultraviolet disinfector further removes a variety of bacteria in water. The system which is provided with a floating ball decanter realizes stable sewage drainage.

Description

technical field [0001] The invention belongs to an integrated technology for treating courtyard domestic sewage by using physical, chemical and biological technologies in environmental engineering methods, and in particular relates to a courtyard domestic sewage treatment and reuse system and a method for treating sewage. Background technique [0002] Traditional sewage treatment often adopts a centralized treatment method, that is, sewage from different sources such as households, shops, and factories is mixed together, and transported to a large-scale sewage treatment plant through a drainage network for unified treatment. For courtyard sewage that is far away from the municipal drainage pipe network, the cost of constructing the drainage collection pipe network is relatively high. On the other hand, my country is an area lacking in water resources, and sewage reuse is one of the economically effective ways to alleviate the contradiction of water shortage. In-situ treatme...

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Problems solved by technology

However, it is essentially an activated sludge method, and sludge bulking is prone to occur when it is not operated properly, and it has high professional requirements for operators.

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