Sewage post-stage biochemical process

Abstract

The invention discloses a sewage post-stage biochemical process. The sewage post-stage biochemical process comprises the steps that step 1, sewage is conveyed to a comprehensive adjusting tank, and the water quantity and the water quality of the sewage are adjusted through the adjusting tank to obtain sewage A; step 2, pretreatment is carried out on the sewage through grids to obtain sewage B; step 3, the sewage B is conveyed into an A-stage tank to obtain sewage C; step 4, the sewage C is conveyed into a B-stage tank to obtain clear water A; step 5, the clear water A is conveyed to a decolorization oxidation tank for color removal and disinfecting to obtain clear water B; step 6, filtering is carried out through activated carbon to obtain clear water C; and step 7, RO treatment is carriedout on the clear water C for reuse. The ecological environment of the medical washing enterprise is improved, meanwhile, the requirement for cleaning water resources is reduced, the water supply pressure is relieved, and remarkable economic benefits and social benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a post-sewage biochemical process. Background technique [0002] In recent years, with the development of population and economy, environmental problems have become increasingly serious, and our government and people have attached great importance to them. Among them, the problem of water pollution has become a more important problem among many environmental problems. Water pollution causes soil pollution, which in turn causes air pollution and destroys the overall ecological environment. The main sources of water pollution are domestic sewage and industrial sewage, among which industrial sewage bears the brunt, and coal chemical wastewater is one of the key industrial wastewater with coal as the basic raw material, which is harmful to the human body and the environment; [0003] In the traditional process, after the sewage enters the grid--grit chamber--anaerobic tank-...

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Problems solved by technology

[0003] In the traditional process, after the sewage enters the grid--grit chamber--anaerobic tank--aerobic tank--sedimentation tank, the water quality is often not up to standard, the sludge production is increased, the water production rate is low, and the treated water The cost of construction has increased; how to solve the problem of water use has become the primary problem of many big cities. Sewage recycling technology can make urban water supply on demand and quality, so that the water quality standard can be adapted to the use of water; making full use of water resources can Relieve pressure on urban water supply

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