City sewage anaerobic ammoxidation autotrophic nitrogen removal apparatus based on granular sludge and method thereof

An anaerobic ammonia oxidation and urban sewage technology, applied in the field of sewage biological treatment, can solve the problems of high energy consumption and large sludge output, and achieve the effects of increasing biomass, low oxygen demand and shortening sedimentation time.

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

Most of the current urban sewage treatment plants use traditional biological denitrification technology, which has the disadvantages of high energy

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  • City sewage anaerobic ammoxidation autotrophic nitrogen removal apparatus based on granular sludge and method thereof

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Embodiment Construction

[0017] The present invention will be further explained below with reference to the accompanying drawings and embodiments: a granular sludge-based anaerobic ammonium oxidation autotrophic denitrification device for urban sewage, which is provided with a municipal sewage raw water tank (1), a denitrification reactor (2) and On-line control device (3); the urban sewage raw water tank (1) is connected to the denitrification reactor (2) through the inlet pump (1.1), and the height to diameter ratio of the denitrification reactor (2) is 15-30; the denitrification reactor is set up There are reflux pump (2.1), aeration pump (2.2), dissolved oxygen online sensor (2.3), drain valve (2.4), three-phase separator (2.5) and return pipe (2.6); dissolved oxygen online sensor (2.3) The data is transmitted to the online control device (3), which controls the aeration pump (2.2), the inlet pump (1.1), the return pump (2.1) and the drain valve (2.4) according to the dissolved oxygen concentration ...

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Abstract

The invention relates to a city sewage anaerobic ammoxidation autotrophic nitrogen removal apparatus based on granular sludge and a method thereof, which belong to the technical field of sewage biological treatment. The apparatus comprises a city sewage raw water tank, a nitrogen removal reactor and an on-line control system. The city sewage is introduced into a nitrogen removal reactor through a water inlet pump from the raw water tank, anaerobic operation is firstly carried out, an organic matter in sewage is converted to an internal carbon source and is stored in microbial biomass; then the material is introduced into a low-oxygen operation phase, the dissolved oxygen concentration is controlled to 0.2-0.5 mg/L, a short-range nitrifying anaerobic ammoxidation reaction is generated; when the dissolved oxygen concentration in the reactor is increased to 1.0 mg/L, aeration is completed, the material is introduced into an anoxic phase, endogenous denitrification coupling anaerobic ammoxidation is generated; short-time deposition is carried out, then granular sludge is formed through sedimentation, and finally draining is carried out for completing periodic operation. The method has the advantages of low total nitrogen concentration of an effluent, low energy consumption and stable operation.

Description

Technical field [0001] The invention relates to a granular sludge-based anaerobic ammonia oxidation autotrophic denitrification device and method for urban sewage, and belongs to the technical field of sewage biological treatment. Background technique [0002] my country has been accelerating the process of urbanization this year, and the number of urban residents has continued to increase, resulting in a continuous increase in the volume of urban sewage. In order to control the pollution of water bodies caused by pollutant discharge, my country has built a large-scale urban sewage treatment plant this year, which is mainly used to control the discharge of organic pollutants, nitrogen and phosphorus in sewage. Most of the current urban sewage treatment plants use traditional biological denitrification technology, which has the disadvantages of high energy consumption and large sludge production. Therefore, it is of great significance to develop high-efficiency and low-energy deni...

Claims

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Application Information

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IPC IPC(8): C02F3/28
CPCC02F3/286C02F2209/08C02F2209/14C02F2209/15C02F2209/16
Inventor 马斌彭永臻南希
Owner BEIJING UNIV OF TECH
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