Clearance blast aeration oxidation ditch sewage treatment technology

A blowing aeration and sewage treatment technology, which is applied in the field of sewage treatment using gap aeration and oxidation structure technology, can solve the problems of high power consumption, difficult maintenance of aeration head, etc., and achieves good effect, small floor space and simple structure compact effect

Active Publication Date: 2007-09-12
ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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Problems solved by technology

Although it saves electricity and space compared with general mechanical aeration, due to the continuous blast a

Method used

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  • Clearance blast aeration oxidation ditch sewage treatment technology
  • Clearance blast aeration oxidation ditch sewage treatment technology

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Embodiment Construction

[0012] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

[0013] As shown in Figure 2, 1 pre-anoxic tank, 2 anaerobic tank, 3 anoxic tank, 4 oxidation ditch, 5 sedimentation tank, 6 underwater screw propeller, 7 internal return pump, 8 microporous aeration tube that can be lifted , 9 mixer, 10 outlet tank, 11 inlet pipe, 12 vent pipe, 13 sludge return pump, 14 residual sludge pump, 15 blower.

[0014] The improved biological reaction system shown in Figure 1 is to add a pre-denitrification tank (pre-anoxic tank) in front of the anaerobic tank to reduce the impact of nitrate in the returning sludge on anaerobic phosphorus release, and to inhibit the filamentous In order to solve the problem of insufficient carbon source for denitrification in the anoxic tank, the influent water is proportionally entered into the pre-anoxic tank and the anaerobic tank.

[0015...

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Abstract

This invention discloses a sewage process technology for clearance fan aeration oxidation channels including a preanoxic pond, an anaerobic pond, an anoxic pond, an oxidation channel and a deposition pond, in which, the intake volume of the preanoxic pond is 10-30% of the flow of the original sewage flow, the intake volume of the anaerobic pond is 70-90%, the oxidation channel applies a flow of continuous water-intaking, clearance fan aeration and continuous outgoing and sets a deposition pond for discharging water, and mud of the deposition pond flows back to the pre-anoxic pond continuously and the mixed solution flows back to the anoxic pond, second stage anoxic ponds are increased to industrial waste water with poor biochemistry to increase the process efficiency.

Description

technical field [0001] The invention relates to a biological reaction sewage treatment process, in particular to a method for treating sewage by adopting an interstitial aeration oxidation structure process. Background technique [0002] With the acceleration of my country's urbanization process, the degree of pollution of rivers, lakes and oceans in China has a tendency to increase, and pollution control is imminent. Urban sewage treatment is one of the industries with high energy consumption. On the one hand, high energy consumption has resulted in high operating costs of sewage treatment facilities; on the other hand, it has also exacerbated my country's current energy crisis to a certain extent. Developed countries have conducted a lot of research and practice on energy saving and consumption reduction in sewage treatment, while the domestic sewage treatment industry currently focuses on facility construction, and has not yet systematically studied energy saving and con...

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Application Information

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IPC IPC(8): C02F3/02
CPCY02W10/10
Inventor 梅荣武韦彦斐吴斌黄一南周刚李明沈浙萍迟春娟
Owner ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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