Novel microorganism flora mixture and mixed nutrient medium thereof

Abstract

The invention relates to a novel microorganism flora mixture and a mixed nutrient medium thereof. The nutrient medium is filter liquor which is prepared by taking plant powder, mineral composition, animal powder, organic acid and the like as raw materials, adding sewage or comprehensive sewage in cities to be processed, mixing, fermenting and filtering. The microorganism flora mixture is a microorganism preparation which is prepared by the following steps: respectively selecting fusarium oxysporum, aspergillus fumigatus, sphaerotilus, vorticella microstoma, photosynthetic bacteria, methanebacteria, desulphovibrio, nitrobacterium, pseudomonas fluorescens and other bacterial strains from obligate aerobes group, anaerobic bacteria group and facultative aerobe group preferentially, then expanding and cultivating, inoculating into the above mixed nutrient medium, mixing, cultivating and domesticating for 15-30 days at the temperature of 20-45 DEG C. The mixed nutrient medium in the invention can cultivate, propagate and domesticate flora mixture with the combination advantages of flora; the flora has stable integrity, no easy variation and strong adaptability, and the invention breaks through the technical bottlenecks of easy degeneracy of microorganism flora, easy decrease of biological activity and slow proliferation and expansion.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a novel microbial flora combination agent and a culture medium thereof. Background technique [0002] At present, the problem of environmental pollution in our country is becoming more and more prominent, such as water pollution control is plaguing governments at all levels and various production enterprises. As we all know, although some pollutants can be removed by physical methods (such as salvage), it is difficult to treat chemical pollutants such as ammonia nitrogen, nitrite, and poultry manure, etc. Chemical methods are easy to cause secondary pollution, and It is difficult to carry out advanced treatment of sewage by expensive physical and chemical treatment methods. At present, more than 90% of the environmental treatment projects in our country adopt methods such as activated sludge method, oxidation ditch and carbonization method. These methods are more complex, requir...

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Problems solved by technology

my country has just begun to apply microorganisms to deal with pollution since the 1920s, and scientific and technological workers have also developed a variety of microbial preparations, such as a composite microbial preparation disclosed in Chinese patent document CN 1189555C, but this type of composite microbial preparation has never been used. It can break through the technical bottlenecks such as the difficulty of rapid expansion and proliferation of microorganisms, the easy degeneration of microorganisms, the decline and loss of biological activity, and it is difficult to realize industrialization and commercialization

However, the effect of using microorganisms to treat sewage depends largely on the number, composition and activity of microorganisms in the treatment system. The existing compound microbial preparations have poor adaptability, and it is difficult to revive, reproduce and form dominant bacterial groups in a short time after entering the water body. Biofilm, and the scope of adaptation is small, it takes a long time; and it is inconvenient in startup, dynamic cultivation and dynamic operation management, the actual operation cost is high, and the treatment effect is not stable

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