Achromobacter xylosoxidans subsp.xylosoxidans LH-N25 and heterotrophic nitrification and aerobic denitrification microorganism bactericide and preparation method and use thereof

Abstract

The invention discloses achromobacter xylosoxidans subsp.xylosoxidans LH-N25 with CGMCC No.6972. The invention also discloses a heterotrophic nitrification and aerobic denitrification microorganism bactericide. The microorganism bactericide comprises achromobacter xylosoxidans subsp.xylosoxidans LH-N25 or also comprises paracoccus aminovorans LH-N40; and the strains are combined according to any ratio. The invention also discloses a preparation method of the microorganism bactericide. The microorganism bactericide disclosed by the invention not only can solve the problem that total nitrogen cannot be easily removed in the traditional reactor, but also can effectively remove ammonia nitrogen and total nitrogen in a water body in the same reactor, and has tolerance and degradation ability on the toxic substances such as phenols, amines, hetercyclics, cyanogens and polyaromatic hydrocarbon in the wastewater at the same time. The microorganism bactericide is especially suitable for chemical wastewater containing nitrogen, is simple in treatment process, stable in effect, and resistant to impact of environmental toxic substances, and has a wide application prospect in treatment of chemical wastewater containing nitrogen.

Description

technical field [0001] The invention belongs to the field of environmental microorganisms, and specifically relates to microbial strains, a heterotrophic nitrification, aerobic denitrification and denitrification microbial bacterial agent composed of the microbial bacterial strains, and a preparation method and application of the bacterial agent. Background technique [0002] The traditional wastewater biological denitrification technology mainly relies on autotrophic nitrifying bacteria and heterotrophic denitrifying bacteria to convert ammonia nitrogen into nitrogen gas through nitrification and denitrification coupling. However, the proliferation rate of autotrophic bacteria is slow, they cannot compete with heterotrophic bacteria in the mixed culture activated sludge system, it is difficult to obtain high biomass, and the nitrification efficiency is low, resulting in weak shock resistance of the autotrophic microbial denitrification system. Nitrification is incomplete; d...

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Problems solved by technology

[0007] The published patent document CN101899401.A provides a microbial agent for ammonia-containing wastewater and its preparation method. The agent contains nitric acid bacteria, nitrous bacteria and denitrifying bacteria, which can be adjusted or proportioned through directional domestication and can effectively treat low COD , high ammonia nitrogen wastewater, but the strains contained in the bacterial agent are too general and have poor tolerance to toxic and harmful substances

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