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Method for rapid starting of anaerobic ammonium oxidation granular sludge by using UASB

A technology of anaerobic ammonium oxidation and anammox bacteria, applied in anaerobic digestion treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. Poor mud settling performance, denitrification performance decline, etc., to reduce inhibition, improve bacterial activity and treatment efficiency, and reduce sludge loss

Active Publication Date: 2013-11-06
BEIJING UNIV OF TECH
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Problems solved by technology

Compared with the biofilm method, the activated sludge method can achieve a higher treatment load, but the settling performance of the flocculent anammox sludge is poor, and it is easy to be washed out from the reactor, resulting in a decrease in the bioconcentration in the reactor and desiccation. Nitrogen performance drop

Method used

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  • Method for rapid starting of anaerobic ammonium oxidation granular sludge by using UASB
  • Method for rapid starting of anaerobic ammonium oxidation granular sludge by using UASB
  • Method for rapid starting of anaerobic ammonium oxidation granular sludge by using UASB

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Experimental program
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Embodiment 1

[0026] The biofilm fixation stage was inoculated with 35.3 g of flocculent sludge eluted from the upflow volcanic anammox biological filter, and the activated sludge was inoculated at a mass ratio of 3:1 from the upflow volcanic anammox biological filter. After elution from the filter, the flocculent sludge and the nitrosation sludge from the nitrosation reactor totaled 36.5g. Water bath heating was used in the test, and the temperature in the reactor was controlled at 32°C to 35°C. The artificial water distribution of ammonia nitrogen / nitrite nitrogen = 1.31 was used as the basic water for the test. The specific influent water quality is as follows: (1) Biofilm fixation stage: NH 4 + -N=165~175mg / L, NO 2 - -N=220~240mg / L; (2) Activated sludge start-up stage: NH 4 + -N=100~110mg / L, NO 2 - -N=130~140mg / L; (3) Granular sludge strengthening stage: NH 4 + -N=100~110mg / L, NO 2- -N=130~140mg / L.

[0027] Taking UASB as the test device, such as figure 1 As shown, the test d...

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Abstract

The invention provides a method for rapid starting of anaerobic ammonium oxidation granular sludge by using UASB, which belongs to the field of treatment and regeneration of municipal sewage. According to the invention, a UASB reactor is used, wherein the upper part of the UASB reactor is filled with a filling material and used as a biomembrane reaction zone, and the lower part of the UASB reactor is an activated sludge zone; the stages of immobilization of a biomembrane, starting of the activated sludge and reinforcement of the granular sludge are carried out; thus, in 66 days, overall nitrogen removal load reaches 4.34 kgN / m<3> / d, an average particle size of the sludge is 1.0 mm, SV2 is equal to SV10, and the anaerobic ammonium oxidation granular sludge is successfully started; and compared to a method of culturing the anaerobic ammonium oxidation granular sludge by using an SBR reactor advocated by Zhihong Zhao and the like (2007), the method provided by the invention has the advantages that time for starting of the granular sludge is reduced by 25 d and overall nitrogen removal load is 4.3 kgN / m<3> / d higher.

Description

technical field [0001] The invention belongs to the field of urban domestic sewage treatment and regeneration, and in particular relates to a rapid start-up method for anaerobic ammonium oxidation granular sludge. Background technique [0002] Anaerobic Ammonium Oxidation (ANAMMOX) refers to the direct conversion of NH by microorganisms under anaerobic conditions. 4 + as electron donor, with NO 3 - or NO 2 - As the electron acceptor, the NH 4 + , NO 3- - or NO 2 - convert to N 2 biological process. Compared with other denitrification processes, there is no need to add organic matter as electron donors, no need to add inorganic carbon sources, low sludge output, no secondary pollution, energy saving for oxygen supply, and low operating costs. The existing anammox process mainly includes biofilm method and activated sludge method. Compared with the biofilm method, the activated sludge method can achieve a higher treatment load, but the settling performance of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28C02F101/16
Inventor 李冬李德祥王斌吴迪梁瑜海高伟楠崔少明杨卓杨胤何永平张翠丹张玉龙吴青周元正苏庆岭门绚曾辉平张杰
Owner BEIJING UNIV OF TECH
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