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Division point inflow aerobic-anoxic-membrane bioreactor (MBR) and method for treating sewage

A membrane bioreactor and anoxic reaction technology, which is applied in the field of sewage treatment, can solve the problems of difficulty in improving the denitrification efficiency of effluent, and achieve the effects of improving the utilization rate of carbon sources in influent water, reducing backflow and saving energy consumption.

Inactive Publication Date: 2014-07-23
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology

In addition, conventional reactors such as A 2 / O-MBR membrane effluent is in the O zone, due to the presence of NOx, it is difficult to improve the denitrification efficiency of the effluent

Method used

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  • Division point inflow aerobic-anoxic-membrane bioreactor (MBR) and method for treating sewage

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Embodiment Construction

[0025] see figure 1 , the point-inflow aerobic-anoxic-membrane bioreactor of the present invention, its structure is:

[0026] The whole reactor is divided into aerobic reaction pool 1 and anoxic reaction pool 2, wherein the anoxic reaction pool 2 is covered with a pool top to realize the sealing and isolation of the anoxic reaction pool, and the aerobic reaction pool 1 and the anoxic reaction pool Pool 2 is connected to water inlet pipe 6. The aerobic reaction pool 1 and the anoxic reaction pool 2 are connected through the H circulation pipe 1.1 and the inverted U pipe 1.2 to realize the hydraulic circulation between the two reaction pools.

[0027] The bottom of the aerobic reaction tank 1 is provided with an aeration device 4.2, and the aeration device 4.2 is connected to the aerator 4 of the aerobic reaction tank, and the air intake pipe 4.1 of the aerator 4 of the aerobic reaction tank communicates with the air.

[0028] The anoxic reaction tank 2 is provided with a mem...

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Abstract

The invention provides a division point inflow aerobic-anoxic-membrane bioreactor (MBR). The MBR comprises an aerobic reaction tank and a closed anoxic reaction tank, wherein the aerobic reaction tank and the anoxic reaction tank are connected by an H circulating pipe and an inverted U pipe, thus achieving water circulation; an aeration device is arranged at the bottom of the aerobic reaction tank and is connected with an aerator of the aerobic reaction tank; a membrane component is arranged in the anoxic reaction tank; an anoxic aeration device is arranged at the bottom of the membrane component and is connected with an aerator of the anoxic reaction tank; the gas inlet of the aerator of the anoxic reaction tank is connected with gases generated by the anoxic reaction tank; a suction pump is connected above the membrane component and is used for membrane water outflow; the aerator of the aerobic reaction tank and the aerator of the anoxic reaction tank are controlled by a control system; the sewage enters the aerobic reaction tank and the anoxic reaction tank respectively according to the proportion and outflows via the MBR. The invention also discloses a method for treating sewage by utilizing the reactor.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a point-inflow aerobic-anoxic-membrane bioreactor for enhancing biological denitrification efficiency. [0002] The present invention also relates to a method for treating sewage by using the above-mentioned reactor. Background technique [0003] At present, my country requires that the sewage discharge standards of urban sewage treatment plants meet the first-class A standard. Not only that, some places, especially the Beijing area, even require the fourth-class standard for surface water. As my country's sewage discharge standards become more and more stringent, the demand for denitrification and phosphorus removal from urban domestic sewage, especially denitrification, is getting higher and higher. At present, traditional biological denitrification processes such as A / O, A 2 / O, etc. In order to achieve better denitrification requirements, on the one han...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 樊耀波徐荣乐赵曙光罗南杨敏袁星
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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