Ecological sewage intercepting pond based on promotion of microbial reaction and purification system

Abstract

The invention discloses an ecological sewage interception tank based on promotion of microbial reaction and a purification system, and belongs to the technical field of environmental engineering water treatment. A nitrogen and phosphorus absorption unit, a microorganism unit and a filtering unit are sequentially arranged in the sewage intercepting pond from top to bottom, the nitrogen and phosphorus absorption unit can absorb nitrogen and phosphorus and provide oxygen for the microorganism unit, and the content of dissolved oxygen in the sewage intercepting pond is 2.2-4.0 mg / L; the microbial unit can perform a nitration reaction under an aerobic condition, and internal microorganisms perform a denitrification effect under an anaerobic condition; the filtering unit comprises a third filtering area, the length of the third filtering area in the rainwater flowing direction ranges from 120-140 cm, and the permeability coefficient of the third filtering area ranges from 0.5-1 m / d. According to the invention, the ecological interception and restoration effects of the interception ditch system on non-point source pollution can be enhanced, pollutants such as TSS, TN, TP and the like carried in rainwater can be greatly intercepted, and ecological in-situ restoration is carried out, so that the pollution load entering a water body is reduced.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering water treatment, and more specifically relates to an ecological sewage interception pond and a purification system based on promoting microbial reactions. Background technique [0002] After entering the 21st century, my country's urbanization is developing faster and faster. With the continuous expansion of the city, the municipal rainwater pipe network is becoming more and more perfect. However, the urban rainwater and sewage pipe network is usually designed separately, and the sewage directly enters the sewage treatment plant for treatment. discharge, while rainwater is imported into the municipal main pipe network line, and then discharged into rivers, ditches, etc., and due to the low flow rate of urban inland rivers and the small amount of water in dry seasons, it is very easy to cause the water quality of urban inland rivers to deteriorate, which directly leads to a series o...

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Problems solved by technology

[0006] Aiming at the problem that the purification device in the prior art has a poor long-term purification effect on sewage, the present invention provides an ecological sewage interception tank and a purification system based on the promotion of microbial reactions; by rationally setting nitrogen and phosphorus absorption units, The microbial unit and filter unit promote the microbial reaction in the ecological sewage interception tank and purification system, thus effectively solving the problem of poor long-term purification effect of sewage

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