Method for quick starting of anaerobic ammonium oxidation technology at room temperature in low matrix

An anaerobic ammonium oxidation and quick start technology, applied in the directions of aerobic and anaerobic process treatment, to achieve the effect of reducing shedding, shortening start-up time, saving heating power costs and dispensing costs

Active Publication Date: 2012-10-10
BEIJING UNIV OF TECH
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Problems solved by technology

The start-up time of the laboratory-scale anammox reactor at room temperature and low matrix is ​​at least one year. Therefore, the long start-up time is the limiting factor restricting the promotion of the ANAMMOX process, and the realization of the ANAMMOX process at room temperature and low matrix sewage Startup will face greater challenges

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  • Method for quick starting of anaerobic ammonium oxidation technology at room temperature in low matrix
  • Method for quick starting of anaerobic ammonium oxidation technology at room temperature in low matrix
  • Method for quick starting of anaerobic ammonium oxidation technology at room temperature in low matrix

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Embodiment 1

[0029] The test is based on the secondary treatment of domestic sewage in a certain community through anaerobic / aerobic biological phosphorus removal. The specific water quality is as follows: COD=50~80mg / L, BOD 5 ≤15mg / L, SS≤30mg / L, NH 4 + -N=55~85mg / L, NO 2 - -N≤0.25mg / L, NO 3 - -N≤1.5mg / L, TP≤1mg / L, pH=7.0~8.0.

[0030] The water quality of the A / O effluent passing through the semi-nitrosation reactor is as follows: COD5 4 + -N=20~40mg / L, NO 2 - -N=20~40mg / L NH 4 + -N / NO 2 --N≈1:1; TN≤15mg / L; TP≤0.5mg / L; pH=7.0~8.0.

[0031] The effluent quality of the anaerobic ammonia oxidation biological filter is as follows: COD5 4 + -N<5mg / L, the removal rate is 85%; TN≤15mg / L, the removal rate is 80%; TP≤0.5mg / L; pH=7.0~8.0.

[0032] The traditional biofilter with volcanic rock as filler is used as the experimental device, such as figure 1 shown. The test device is made of plexiglass, with an inner diameter of 500mm, a height of 1.5m, a total volume of 216L, and an eff...

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Abstract

A method especially for quick starting of anaerobic ammonium oxidation technology at room temperature in low matrix belongs to the field of urban domestic sewage treatment and regeneration. The method comprises firstly inoculating nitrified sludge having certain nitration function into an upward-flow biology filtering tank using volcanic rocks as filtering materials, and employing a method of continuous aeration and dissolved oxygen concentration control so as to cultivate nitrified biomembrane; secondly, employing a intermittent aeration / anaerobic way to screen and concentrate anaerobic ammonium oxidation (ANAMMOX) bacterium; and lastly adding a certain amount of ANAMMOX bacterium into the reactor after the reactor fully enter into an anaerobic situation to perform rapid induction, andthus reducing starting time. On the basis of appearance of anaerobic ammonium oxidation characteristics, HRT continues to be reduced, water inflow load is raised, and finally starting of ANAMMOX technology at room temperature in low-matrix sewage can be realized. The invention provides a method for quick starting of the anaerobic ammonium oxidation technology at room temperature in low matrix.

Description

technical field [0001] The invention belongs to the field of urban domestic sewage treatment and regeneration. Specifically, it relates to a rapid start-up method for anaerobic ammonium oxidation (ANAMMOX) process dedicated to normal temperature and low-matrix sewage biofilm. Background technique [0002] In recent years, due to man-made reasons, the nitrogen cycle has been destroyed, leading to the accumulation of intermediate products, resulting in increasingly serious eutrophication of water bodies. Lake "blooms" and offshore "red tides" have occurred from time to time and are becoming more and more severe. Eutrophication of water bodies has endangered agriculture, fishery, tourism and many other industries, and poses a huge threat to drinking water sanitation and food safety. Therefore, nitrogen removal has become an important topic in wastewater treatment. In the last century, based on nitrification and denitrification, the technical system of wastewater biological de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 李冬邱文新吴迪梁瑜海曾辉平李德祥张功良崔少明杨卓孙宇高伟楠王斌苏东霞周利军张杰
Owner BEIJING UNIV OF TECH
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