Sewage treatment device

Abstract

The invention discloses a sewage treatment device, which comprises a primary filter and an ultra-filtration membrane component. The primary filter and the ultra-filtration membrane component are connected through a conduit, the output end of the ultra-filtration membrane component is connected with a nano photocatalysis device, a backwashing device is connected between the water outlet end of thenano photocatalysis device and the ultra-filtration membrane component, the ultra-filtration membrane component is also connected with a sewage return pipe, and the primary filter consists of a PP coarse filter, a CTO coarse filter and an ultraviolet sterilizer which are orderly connected in series through the conduit according to the flow direction of the sewage. The sewage treatment device effectively and greatly reduces secondary pollution and occupies small area.

Description

technical field [0001] The invention relates to a water treatment device, in particular to a sewage treatment device. Background technique [0002] At present, environmental pollution is becoming more and more serious. In recent years, water quality shortage and pollution problems have become increasingly serious, causing huge losses to social and economic development, and increasingly threatening the survival of human beings. Therefore, the recycling of sewage has become a solution to water pollution. the crux of the matter. Organic pollution of water has also become a very serious problem. The traditional sewage treatment system (CAS) adopts the gravity sedimentation method as the solid-liquid separation method. This treatment method needs to set up a sedimentation tank, such as Figure 1 , the separation efficiency is low, the water quality is unstable, the floor area is large, the construction cost of the pipe network is high, and the construction period is long. In re...

AI Technical Summary

Problems solved by technology

The domesticated microbial bacteria cultivated in the bioreactor, the bacterial cells continue to multiply to the inside of the membrane, and the contamination of the carbohydrate component (SMPc) in the SMPp produced by the cell metabolites in the membrane is irreversible pollution, thus Lead to membrane pore clogging, decrease in membrane flux, shortened membrane life and increased operating costs

However, the above-mentioned treatment process is to separate or concentrate the pollutants, or just transfer the pollutants from one phase to another, without destroying the pollutants and achieving harmlessness, which usually inevitably brings secondary waste or secondary waste. secondary pollution

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