Biological nitrogen removal method based on anaerobic Feammox and application thereof

A biological denitrification and ammonia oxidation technology, applied in the application field of sewage denitrification, can solve the problems of poor bioavailability, low iron solubility, and unsatisfactory enrichment effect, and achieve less carbon source demand, investment and Less operating costs and cost-saving effects

Active Publication Date: 2016-01-27
CHONGQING UNIV
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Problems solved by technology

[0006] Jaffé of Princeton University in the United States found Feammox bacteria in the soil of riverbank grasslands, which can realize Feammox. They took soil samples from the site and used anaerobic reactor

Method used

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  • Biological nitrogen removal method based on anaerobic Feammox and application thereof
  • Biological nitrogen removal method based on anaerobic Feammox and application thereof

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Embodiment Construction

[0030] The specific implementation manners of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings, but the present invention is not limited to the following examples.

[0031] use in the laboratory figure 1 The total reaction volume in is that the SBR reactor of 3L carries out the Fe(III) NTA oxidation NH of the inventive method 4 + , the provenance sludge was obtained from the Feammox sludge provenance (from the secondary sedimentation tank sludge of Chongqing Sewage Treatment Plant) in the Water Treatment Laboratory of the School of Resources and Environment, Chongqing University. The specific operation steps are as follows:

[0032] 1. Cultivate and enrich Feammox microorganisms

[0033] (1) Sludge pretreatment: Take 1000ml of the aforementioned provenance sludge, wash the sludge with culture medium for 3-5 times under continuous nitrogen aeration, and then use the culture medium to make the volume...

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Abstract

The invention discloses a biological nitrogen removal method based on anaerobic Feammox and application thereof. The biological nitrogen removal method comprises the following steps that sludge containing Feammox microorganisms is added into an anaerobic reactor, ammonia containing wastewater is led into the reactor, NH4 + in the Fe (III) NTA oxidized wastewater is utilized to generate NO2-, and then nitrogen treatment is performed. The biological nitrogen removal method comprises the specific steps that 1, the Feammox enriched microorganisms are cultivated: the sludge is pretreated and the Feammox microorganisms are cultivated; 2, the Feammox microorganisms are utilized to perform wastewater treatment; 3, nitrogen removal treatment is performed by using the liquid collected after anaerobic Feammox treatment. The method has the advantages of lower power consumption, few carbon source demands, less greenhouse gas emissions, less produced NO3- and the like, is lower in investment and operating costs and wide in application prospect.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a method for treating ammonia in sewage by using anaerobic iron to oxidize ammonia and its application in sewage denitrification. Background technique [0002] At present, NH can be realized in sewage treatment 4 + The microbial processes of oxidation are mainly aerobic ammonium oxidation and anaerobic ammonium oxidation. Although the traditional aerobic ammonium oxidation process has been widely used in sewage treatment, this process requires oxygen from the outside to be able to test NH 4 + Oxidation of Oxygen and product NO in the aerobic ammonium oxidation system 2 - , so there are usually nitrite oxidizing bacteria in the system to convert NO 2 - Oxidation to NO 3 - , and then through the denitrification process to be able to NO 3 - Revert to N 2 Achieve NH 4 + removal, so the traditional nitrification and denitrification process needs to a...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F101/16
Inventor 张代钧姚宗豹李玉莲万新宇何强
Owner CHONGQING UNIV
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