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New method of urban sewage treatment

A technology of urban sewage and new methods, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., which can solve the problems of high temperature requirements, high power consumption, and large floor space. , to achieve high-efficiency denitrification and phosphorus removal, reduce investment costs, and save land.

Inactive Publication Date: 2015-12-09
柴建中
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention aims to provide a new method for urban sewage treatment to solve the technical problems of low nitrogen removal rate at low temperature, large floor area, high power consumption, and high temperature requirements in sewage treatment in the prior art.

Method used

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Embodiment approach

[0037] According to a typical embodiment of the present invention, the group of biochemical pools includes anaerobic pools, anoxic pools and aerobic pools.

[0038] Preferably, air is supplied to the biochemical pool group through an aeration fan, and the air pipe valve is adjusted to keep the dissolved oxygen in the aerobic pool of the biochemical pool group at 0.1-1.2 mg / L. Under the condition of this amount of dissolved oxygen, Bacillus can grow very well, so that phosphorus can be removed effectively.

[0039] According to a typical implementation of the present invention, the sludge treatment system includes a sludge dehydrator, and the disinfection system is an ultraviolet disinfection system.

[0040] According to a typical embodiment of the present invention, a new method for urban sewage treatment is provided. The method includes the following steps: first step: the domestic sewage enters the coarse grid well through the municipal pipe network to remove large volumes...

Embodiment 1

[0044] In the new method of urban sewage treatment of the present invention, microorganisms include Bacillus (Bacillus bacterium) microorganisms include Paenibacillus immobilis, Gelptone-like Bacillus, Bacillus liquefied amylobacter, Bacillus lateral spores, Bacillus subtilis, Bacillus licheniformis Bacillus, Bacillus cereus, Bacillus thuringiensis, Bacillus megaterium, Bacillus polymyxa, Bacillus amyloliquefaciens and Bacillus pumilus, etc. The specific process is as follows figure 2 As shown, it mainly includes the following steps:

[0045] The first step: domestic sewage enters the coarse grid well through the municipal pipe network to remove large volumes of pollutants, and the coarse grid mesh is 25-100mm;

[0046] Step 2: The water from the coarse grid well flows into the sewage lift pump well, and then is lifted from the sewage lift pump well to the fine grid well through the lift pump. The fine grid will intercept impurities and large particles in the water, and the f...

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Abstract

The invention discloses a new method of urban sewage treatment. The method comprises the following steps: 1, sewage enters into a coarse screen well to remove a large volume of pollutants; 2, fine screens of a fine screen well intercept impurities and large particulate matters in the sewage; 3, sediments in the sewage are deposited by a grit chamber; 4, sludge in a secondary sedimentation tank flows backs to the front end of a biochemical pool group, and bacterial flora taking genus bacillus microorganisms as dominant bacteria is added into the biochemical pool group; 5, effluent water of the biochemical pool group flows into the secondary sedimentation tank, and sludge-water separation is performed in the secondary sedimentation tank; 6, effluent water of the secondary sedimentation tank flows into a disinfection system and is discharged by a water metering tank. By adopting the technical scheme of the invention, due to the fact that the bacterial flora taking the genus bacillus microorganisms as the dominant bacteria is added into the biochemical pool group so as to achieve the following beneficial effects that the capability of nitrogen and phosphorus removal is efficient, no extra deodorization system is needed, the cost of investment is greatly reduced, energy conservation and space saving are realized, and the discharged water quality is good.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a new method for urban sewage treatment. Background technique [0002] Urban domestic sewage mainly comes from households, businesses and urban public facilities. Organic matter is the main pollutant of domestic sewage, such as starch, protein, sugar and mineral oil. The chemical oxygen demand, biological oxygen demand, total nitrogen and total phosphorus of urban domestic sewage are relatively high. When water with high nitrogen and phosphorus content is discharged into the natural world, it is easy to cause eutrophication of the water body, causing a large number of algae to grow and multiply, resulting in deterioration of water quality, polluting the environment, and causing red tides and algal blooms in severe cases. [0003] For domestic sewage, biological methods are mainly used for treatment at home and abroad. Biological methods mainly include activated sludge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 柴建中柴伟贺王伟伟刘文武
Owner 柴建中
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