Comamonas testosteroni LH-N5 and heterotrophic nitrification-aerobic denitrification microbial inoculum, and preparation method and application thereof

Abstract

The invention discloses a Comamonas testosteroni LH-N5 CGMCC No.6975. The invention also discloses a heterotrophic nitrification-aerobic denitrification microbial inoculum which comprises the Comamonas testosteroni LH-N5, or one or both of Achromobacter xylosoxidans subtype xylosoxidans LH-N25 and Paracoccus aminovorans LH-N40; and the strains are combined in any proportion. The invention also discloses a preparation method of the microbial inoculum. The microbial inoculum disclosed by the invention can solve the problem of difficulty in removing total nitrogen in the traditional reactor, can effectively remove ammonia nitrogen and total nitrogen in the water body in one reactor, has tolerance or degradation capability for phenols, amines, heterocycles, cyanides, polycyclic aromatic hydrocarbons and other toxic substances in wastewater, is especially applicable to nitrogenous chemical wastewater, has the advantages of simple treatment process, stable effect and environmental toxicant impact resistance, and has very wide application prospects in various actual nitrogenous chemical wastewater treatment processes.

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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