AAO-MBR process and apparatus for synchronously removing nitrogen and phosphorus

A simultaneous denitrification and dephosphorization technology, applied in water/sewage multi-stage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem of increasing the operating cost of the membrane separation process and limiting engineering applications, etc. problems, to achieve the effect of alleviating membrane fouling and low energy consumption

Active Publication Date: 2014-10-22
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

However, the decrease of membrane flux and membrane cleaning due to membrane fouling will increase the operating cost of the membrane separation process and limit its engineering application.

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  • AAO-MBR process and apparatus for synchronously removing nitrogen and phosphorus

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] figure 1 The reference numerals in the figure are: sewage inlet pipe 100; first sewage inlet pipe 101; second sewage inlet pipe 102; anoxic pool 1; anaerobic pool 2; first agitator 21; aerobic pool 3; sedimentation tank 4 ; second agitator 41; MBR reaction tank 5; non-woven fabric filter 51; MBR membrane assembly 52; Sludge discharge pipe 72 ; drain pipe 8 ; second excess sludge discharge pipe 9 .

[0029] The present invention needs to solve the problems of difficulty in further improving the phosphorus and nitrogen removal capacity of the traditional A2 / O process, insufficient utilization of carbon sources, long process, large floor area and high energy consumption caused by membrane fouling in the MBR process. The present invention proposes a simultaneous denitrification and dephosphorization MBR process that can make full use of ca...

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Abstract

The invention provides an AAO-MBR process for synchronously removing nitrogen and phosphorus. The AAO-MBR process for synchronously removing nitrogen and phosphorus comprises the following steps of S1, introducing sewage into an anaerobic tank and an aerobiotic tank respectively, carrying out denitrification and phosphorus release in the anaerobic tank by virtue of organic substances carried by the sewage, introducing water of the anaerobic tank into the aerobiotic tank, and carrying out absorption of the organic substances and phosphorus in the aerobiotic tank; S2, introducing water of the aerobiotic tank into a sedimentation tank and carrying out mud-water separation in the sedimentation tank; and S3, introducing a supernatant obtained by the mud-water separation in the sedimentation tank into an MBR reaction tank, completing a nitration reaction and strengthen removal of the organic substances in the MBR reaction tank, and returning the mud in the sedimentation tank to the anaerobic tank to maintain the mud concentration in the anaerobic tank. The invention also provides an AAO-MBR apparatus for synchronously removing nitrogen and phosphorus. The AAO-MBR process and apparatus have the advantages of stability, high efficiency, short route and low energy consumption.

Description

technical field [0001] The invention relates to a sewage treatment process, in particular to a synchronous nitrogen and phosphorus removal AAO-MBR process and a device thereof in the sewage treatment process. Background technique [0002] With the rapid development of economy and society, the problem of lack of water resources in our country is becoming more and more obvious. However, in terms of the advanced sewage treatment process, affected by the bottleneck of the traditional activated sludge process, the water quality of the advanced treatment, especially the nitrogen and phosphorus pollutants, is unstable and the health and safety risks of the reclaimed water exist. It is urgent to develop a new type of high efficiency and low consumption. handicraft Research. In addition, most of the existing sewage treatment plants are faced with the pressure of improving treatment capacity and upgrading. Under the condition of insufficient land resource reserves, there is an urgent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 孙飞云李谱董文艺陈立春李朋飞邵明非
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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