AOMBBR device for treating low-concentration ammonia-nitrogen riverway water

Abstract

The invention aims to provide an AOMBBR device for treating low-concentration ammonia-nitrogen riverway water. The AOMBBR device comprises an anoxic tank, an aerobic tank, a micro-filtration tank, a reflux pump and an air blower, the device organically integrates an AO technique, an MBBR technique and turntable micro-filtration, utilizes the technical principle of pre-denitrification-short distance nitration and the technical principle of turntable micro-filtration to treat low-concentration ammonia-nitrogen riverway water and greatly improves the treatment efficiency, system effluent nitrogenand phosphorus indexes reach the surface water IV class standard, and the shortcomings of existing sewage treatment devices are overcome. Compared with the existing treatment devices, the AOMBBR device has the advantages that the effluent quality is high and stable, occupied area is small, operating cost is low, operation and maintenance are simple and the like.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to an AOMBBR device for treating low-concentration ammonia nitrogen river water. Background technique [0002] In recent years, because people pay too much attention to the reality of economic and social development and neglect the protection of river water environment, most river water bodies are polluted by nitrogen and phosphorus, eutrophication is becoming more and more serious, and the value of resources is reduced or even lost. How to effectively purify these slightly polluted river and lake water is an urgent problem that people need to solve at present. [0003] The COD of these lightly polluted water bodies is generally low, usually below 50 mg / l, and the concentration of ammonia nitrogen is also low, usually below 20 mg / l. Seriously polluted water bodies need to be treated urgently. However, due to the imbalance of carbon and nitrogen ratio of this type of water, if the ex...

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Problems solved by technology

[0003] The COD of these lightly polluted water bodies is generally low, usually below 50 mg / l, and the concentration of ammonia nitrogen is also low, usually below 20 mg / l. Seriously polluted water bodies need to be treated urgently. However, due to the imbalance of carbon and nitrogen ratio of this type of water, if the existing traditional process is used to treat this type of water, there are complex process flow, large floor area, high energy consumption for operation, and complicated management and maintenance. question

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