Salt-tolerant microbial agent and preparation method thereof

Abstract

The invention discloses a salt-tolerant microbial agent and a preparation method thereof. The microbial agent contains staphylococcus cohnii FSND-C, arthrobacter creatinolyticus FDN-1, flavobacterium mizutaii FDN-2, paracoccus denitrificans DN-3 and methylobacterium phyllosphaerae SDN-3. The microbial agent can achieve removal of ammonia nitrogen, total nitrogen and CODcr in the same reactor, has a good wastewater treatment effect, and can achieve short-cut nitrification and denitrification or simultaneous nitrification and denitrification while removing COD. Staphylococcus cohnii FSND-C can utilize various carbon sources, has certain salt tolerance, can be applied to the high-salinity wastewater treatment process, simultaneously can secrete a substance under environmental stimulus to enhance the flocculability of sludge, and further widens the application range of the microbial agent.

Description

technical field

[0001] The invention belongs to the field of environmental microorganisms, and in particular relates to a microbial bacterial agent for wastewater treatment and a preparation method thereof. The bacterial agent can complete the removal of ammonia nitrogen, total nitrogen and CODcr, and realize the industrialization and production of microbial bacterial agents for wastewater treatment. commoditization. Background technique

[0002] Biological denitrification is one of the more cost-effective methods to solve nitrogen pollution. Whether it is a traditional microbial-attached wastewater treatment structure or a newly developed high-efficiency biofilm treatment system, the microorganisms responsible for nitrogen removal are mainly autotrophic nitrifying bacteria. 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 nitr...