Method and device for treating municipal sewage through coupling sludge double-reflux AOA short-cut nitrification with anaerobic ammonia oxidation and endogenous denitrification

An endogenous denitrification and anaerobic ammonium oxidation technology, which is applied in the field of urban sewage treatment and regeneration, can solve the problems of difficulty in deep denitrification and limitation of reflux ratio, and achieve the effects of saving aeration, reducing waste and saving energy.

Active Publication Date: 2019-02-22
BEIJING UNIV OF TECH
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Problems solved by technology

Since its own denitrification effect is limited by the reflux ratio, it is difficult to deeply denitrify

Method used

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  • Method and device for treating municipal sewage through coupling sludge double-reflux AOA short-cut nitrification with anaerobic ammonia oxidation and endogenous denitrification

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Embodiment Construction

[0022] 1. The present invention will be further described below in conjunction with accompanying drawings and implementation: the method and device for the treatment of municipal sewage by sludge double backflow AOA short-range nitrification coupling anaerobic ammonium oxidation and endogenous denitrification, is characterized in that: comprise the sewage raw water tank that is connected sequentially (1), AOA reactor (2), sedimentation tank (3); the raw sewage water tank (1) is provided with an overflow pipe (1.1) and a vent pipe (1.2); the raw sewage water tank (1) passes through the water inlet pump (2.1 ) is connected to the AOA reactor (2); the AOA reactor (2) includes 8 compartments, which are divided into anaerobic zone (2.2), aerobic zone (2.3), and anoxic zone (2.4) according to the direction of water flow. The volumes of each reaction zone are equal, and each compartment is equipped with connection holes that are connected up and down according to the direction of wate...

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Abstract

The invention provides a method and device for treating municipal sewage through coupling sludge double-reflux AOA short-cut nitrification with anaerobic ammonia oxidation and endogenous denitrification and belongs to the field of sewage treatment and recycling. The device mainly comprises a sewage raw water tank, an AOA reactor and a sedimentation tank. Sludge is refluxed to an oxygen-deficiencyregion and an anaerobic region respectively from the bottom of a secondary sedimentation tank and biofilm filler is added into an aerobic region. The sewage enters the AOA reactor and organic mattersin raw water are removed through accumulating a carbon source accumulated in main sludge of the anaerobic region. Then floc sludge entering the aerobic region and enriched anaerobic ammonia oxidationfiller are used for carrying out short-cut nitrification anaerobic ammonia oxidation; generated nitrate nitrogen and nitrite which is not used completely enter the oxygen-deficiency region and the endogenous denitrification is carried out in the oxygen-deficiency region to realize the aim of deep denitrification. The aerobic region is used for carrying out short-cut nitrification anaerobic ammoniaoxidation to realize autotrophic nitrogen removal; the deep denitrification is carried out in the oxygen-deficiency region by utilizing the carbon source in the sludge and the carbon source does notneed to be additionally added; the low-C / N municipal domestic sewage can be treated and the method and the device have the characteristics of saving energy, reducing consumption and the like.

Description

technical field [0001] The invention belongs to the field of urban sewage treatment and regeneration, and in particular relates to a method and a device for treating urban sewage by sludge double-reflux AOA short-range nitrification coupled with anaerobic ammonium oxidation and endogenous denitrification. Background technique [0002] With the rapid development of human economy, environmental pollution is becoming more and more serious. Among them, water pollution is becoming more and more serious, especially the eutrophication of water caused by nitrogen and phosphorus, which has seriously affected people's lives. At present, the treatment technology of nitrogen and phosphorus in sewage treatment plants in my country mostly adopts continuous nitrification and denitrification denitrification process. where A 2 The / O process is currently the most widely used process in my country. Since its own denitrification effect is limited by the reflux ratio, it is difficult to deep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F101/16
CPCC02F3/30C02F3/302C02F2101/16
Inventor 彭永臻高歆婕许载周丁鹏霖李夕耀
Owner BEIJING UNIV OF TECH
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