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Device and method for treating urban domestic sewage by coupling of short-cut nitrification anaerobic ammonium oxidation and denitrification treatment

A technology for nitrifying anaerobic ammonia oxidation and urban domestic sewage, which is applied in biological treatment devices, aerobic and anaerobic process treatment, chemical instruments and methods, etc. Effect

Pending Publication Date: 2017-09-15
BEIJING UNIV OF TECH
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Problems solved by technology

In addition, the anaerobic ammonium oxidation reaction will generate a certain proportion of nitrate, resulting in the effluent total nitrogen not reaching the standard

Method used

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  • Device and method for treating urban domestic sewage by coupling of short-cut nitrification anaerobic ammonium oxidation and denitrification treatment
  • Device and method for treating urban domestic sewage by coupling of short-cut nitrification anaerobic ammonium oxidation and denitrification treatment

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing and implementation: short-range nitrification anammox coupled denitrification method and device for treating urban domestic sewage, comprising sequentially connected sewage raw water tank (1) and short-range nitrification anammox coupled denitrification SBR reactor (2); wherein the raw sewage water tank (1) is provided with a first overflow pipe (1.1) and a first vent pipe (1.2); the raw sewage water tank (1) passes through the first inlet pump (2.1) and the short distance The nitrification anammox coupled denitrification coupled SBR reactor (2) is connected; the short-path nitrification anammox coupled denitrification coupled SBR reactor (2) is provided with a second overflow pipe (2.1) and a drain pipe (2.2) , aeration pump (2.3), gas flow meter (2.4), aeration head (2.5), agitator (2.6) and sludge discharge pipe valve (2.7), equipped with a dissolved oxygen detection probe (...

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Abstract

The invention belongs to the field of biological treatment of sewage and discloses a device and a method for treating urban domestic sewage by coupling of short-cut nitrification anaerobic ammonium oxidation and denitrification treatment. The device mainly comprises a short-cut nitrification anaerobic ammonium oxidation and denitrification coupled SBR reactor. In a first stage which is a high-ammonia-nitrogen reinforcement stage, ammonia nitrogen is added into the urban domestic sewage to obtain high-ammonia-nitrogen low-carbon-nitrogen-ratio sewage which then enters the SBR reactor, short-cut nitrification anaerobic ammonium oxidation is mainly realized through low-oxygen aeration, and high total nitrogen removal load is finally realized by high-ammonia-nitrogen reinforcement of main functional bacteria namely ammonium oxidation and anaerobic ammonium oxidation bacteria. In a second stage which is a transition stage, influent ammonia-nitrogen concentration reduction and low-oxygen aeration are carried out. In a third stage which is an urban domestic sewage treatment stage, anaerobic stirring, low-oxygen aeration and anoxic stirring are performed respectively to realize removal of total nitrogen and COD in sewage. According to data, compared with integrated sewage directly used for urban domestic sewage treatment, integrated sewage subjected to high-ammonia-nitrogen reinforcement has advantages of stable nitrogen removal effects and energy saving and consumption reduction due to low-oxygen aeration in the aeration stage.

Description

technical field [0001] The invention relates to a method and device for treating urban domestic sewage by short-range nitrification, anaerobic ammonium oxidation coupled denitrification enhanced by high ammonia nitrogen, and belongs to the technical field of sewage biological treatment. Background technique [0002] Our country has a large population, and the demand for clean water is increasing day by day. The rapid development of industry and technology has made the eutrophication of water body more and more serious, and the ammonia nitrogen contained in urban domestic sewage beyond the normal level can accelerate the eutrophication of water body. Therefore, the removal of nitrogen is the main problem to be solved by various urban sewage treatment plants. Activated sludge process is currently the most widely used treatment technology. Traditional nitrogen removal methods such as nitrification and denitrification often face the problem of insufficient carbon sources and h...

Claims

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Application Information

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IPC IPC(8): C02F3/30
CPCC02F3/301C02F2203/006
Inventor 彭永臻丁舒喆包鹏
Owner BEIJING UNIV OF TECH
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