A kind of sewage treatment method

Abstract

The invention discloses a sewage treatment method adopting taxon setting and also discloses strains in specific taxon grids and an order. A biological treatment system established by adopting the sewage treatment method has the treatment efficiency being 24 times that of the traditional biological treatment method, the hydraulic retention time is at least shortened by 80%, the total floor area of facilities is reduced by about 70%, the amount of COD treated in per hour is large, and the treatment efficiency is high; and compared with an existing method, the sewage treatment method disclosed by the invention has obvious advantages, no chemical reagent is added, no environmental pollution is produced, treatment facilities are simplified, and the construction cost is greatly saved.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a method for increasing the density of bacterial flora and improving the efficiency of microbial treatment of sewage. Background technique [0002] In the current biochemical sewage treatment process, take the membrane biological MBR process that combines biochemistry and membrane separation technology, which is recognized as the best treatment effect, as an example. The treatment process needs to be treated with anaerobic 6~12H and aerobic 8~24H Take the biochemical treatment system that treats 100T / D, influent COD 350mg / L, and effluent COD 50mg / L as an example; an anaerobic pool of 100M is required 3 , Aerobic pool 100M 3 , the construction capacity will reach 200M 3 The reason why it is so large is that under the same anaerobic or aerobic conditions, the mutual suppression between various anaerobic or aerobic bacterial groups makes it difficult to generate enough bacteria in ...

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Problems solved by technology

[0005] In the biological aerated filter method using activated carbon with a large surface area as filler, although the method of increasing the filler can increase the density of bacteria, once the COD is high, it will easily lead to the compaction of the filler.

[0006] However, tower-type biofilters that make full use of the wind-drawing effect can allow higher influent COD, but there is still suppression between bacterial flora, and it is necessary to build facilities with a height of 8-24 meters, which is limited in many cases. Moreover, a pump with a higher head is required, which consumes a lot of energy, resulting in less use in actual production

[0007] Biochemical treatment mainly relies on the biological action of bacteria. The existing biological treatment technology cannot achieve high treatment efficiency because it cannot solve the problem of bacterial flora competition among different species of bacteria. It requires the construction of huge facilities and a long residence time. To make up for the low processing efficiency

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