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Method for rapidly starting anaerobic ammonium oxidation reactor

A technology of anaerobic ammonium oxidation and quick start, applied in the field of quick start anaerobic ammonium oxidation reactor

Inactive Publication Date: 2012-02-08
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This kind of reactor is relatively stable in terms of flow rate impact resistance and substrate concentration, but it takes a long time to start up, generally about 100 days. At present, there is no way to use this device to quickly start the anammox reaction.

Method used

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  • Method for rapidly starting anaerobic ammonium oxidation reactor

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Embodiment 1

[0024] Anaerobic activated sludge was used as the inoculum, bamboo charcoal was used as the sludge carrier, and an upflow anaerobic sludge bed reactor was used as the reaction device to domesticate and cultivate anaerobic ammonium oxidation sludge under the condition of anaerobic shading.

[0025] Anaerobic nitrification sludge from a municipal sewage treatment plant and a brewery wastewater treatment plant were used as inoculation sludge, mixed 1:1 (3.5 L each) into the upflow anaerobic sludge bed reactor, and the mixing ratio was 10 L The reactor was fed with 70% anaerobic digested sludge. Bamboo charcoal is used as the starting carrier of anaerobic ammonium oxidation reaction, the addition amount is 4% (V / V), the diameter of bamboo charcoal particles is 3-5 mm, and the specific surface area is 14.0-31.2 m 2 / g, the density is 750 kg / m 3 , with a bulk density of 520 kg / m 3 . The operating conditions are: the concentration of ammonia nitrogen in the simulated wastewater is...

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Abstract

The invention discloses a method for rapidly starting an anaerobic ammonium oxidation reactor. With an up-flow anaerobic sludge blanket digestion adopted, the method comprises the following steps of: adding mixed sludge composed of anaerobic digested sludge and sludge of a secondary sedimentation tank of a sewage treatment plant into a reactor, then adding bamboo charcoal particles with the diameter of 3-5mm, specific area of 14.0-31.2m<2> / g, density of 750kg / m<3> and volume density of 520kg / m<3>; and under airtight and shading conditions, inputting simulated waste water into a reactor to carry out continuous culture starting, wherein operating conditions are that: temperature of the reactor is maintained to be 25-35 DEG C, pH of waste water is 7.0-8.0, hydraulic power retention period is 24-48 hours, and concentration ratio of simulated waste water ammonia nitrogen to nitrite nitrogen is 1: (1.0-1.5). The method disclosed by the invention is convenient to apply, has low cost, can greatly reduce starting time of the anaerobic ammonium oxidation reactor and has wide application prospect to low carbon nitrogen ratio waste water.

Description

technical field [0001] The invention relates to a method for quickly starting an anaerobic ammonium oxidation reactor. Background technique [0002] With the vigorous development of modern industry and intensive agriculture, pollution from point and non-point sources has become an important factor restricting economic development. The disorderly discharge of high-concentration ammonia-nitrogen wastewater has become the main cause of eutrophication in water bodies. Therefore, how to control ammonia nitrogen pollution has become a major problem in sewage treatment. Traditional nitrification-denitrification removal of ammonia nitrogen needs to consume oxygen and organic carbon sources, but some types of wastewater such as landfill leachate, livestock and poultry breeding wastewater, sludge anaerobic digestion, and urban sewage treatment plant secondary sedimentation tank effluent C / N Relatively low, the application of this process requires an additional carbon source, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28
Inventor 吴伟祥黄孝肖陈重军
Owner ZHEJIANG UNIV
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