Method for treating high-concentration ammonia nitrogen wastewater by autotrophic denitrification process

A technology for ammonia nitrogen wastewater and autotrophic denitrification, applied in sedimentation treatment, anaerobic digestion treatment, chemical instruments and methods, etc., can solve the problems of high cost, difficult treatment of high concentration ammonia nitrogen wastewater, immature technology, etc., and achieve carbon saving source, save aeration consumption, and save operating costs
CN105800873AInactive Publication Date: 2016-07-27SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2016-07-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for treating high-concentration ammonia nitrogen wastewater by a autotrophic denitrification process, and belongs to the technical field of wastewater treatment and recycling. The method is characterized by being a completely autotrophic biological denitrification process based on nitrite, wherein by virtue of the action of ammonia oxidizing bacteria (AOB), ammonia is oxidized into nitrite; and by virtue of the action of anaerobic ammonia oxidation bacteria (AAOB), the residual ammonia and nitrite are converted into nitrogen gas. According to the method, a biological fluidized bed filler is added into a CANON tank, so that the ammonia nitrogen treatment load is improved, and therefore, the method is an efficient and energy-saving ammonia nitrogen wastewater treatment process. Active sludge can be recycled, so that the method has remarkable environmental benefits and economic benefits.
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Description

1. Technical field

[0001] The invention relates to a method for treating high-concentration ammonia-nitrogen wastewater by using an autotrophic denitrification process, and belongs to the technical field of wastewater treatment and recycling. 2. Background technology

[0002] Excessive discharge of ammonia nitrogen into the water body will lead to eutrophication of the water body, reducing the ornamental value of the water body, and the nitrate and nitrite produced by oxidation will also affect the health of aquatic organisms and even human beings. Therefore, wastewater denitrification treatment has received widespread attention. At present, the main denitrification methods include biological nitrification and denitrification, breakpoint chlorination, air stripping and ion exchange. Nitrification sludge dehydration liquid, landfill leachate, catalyst production plant wastewater, meat processing wastewater and synthetic ammonia chemical wastewater contain extremely high conc...

Claims

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