A microbial flora for treating high-salt industrial wastewater

Abstract

The invention discloses a microbial flora for treating high-salt industrial wastewater and aims to screen and compound functional florae and verify the application effects on the basis of the characteristics that high-salt wastewater is high in salt content, high in chromaticity, high in COD, low in BOD and poor in biochemical property and contains complicated contaminants. Through isolation, screening and acclimatization, an active flora is obtained, the active flora has the capability of tolerating 18% high-salt wastewater and can be applied to biochemical treatment on high-salt pickling wastewater; according to the components and the proportion of the flora, relevant strains are purchased from the China General Microbiological Culture Collection Center and used for simulating the flora components of the acclimatized microbial flora, that is, enterobacter hormaechei, bacillusmegatherium, chromohalobacterjaponicas, halomonasxianhensis, chryseobacteriumindoltheticum and clostridiumsporogenes are compounded in a quantity ratio of 2:2:1:1:1:1, a relatively remarkable degradation effect is achieved when the compounded microbial flora is used for treating wastewater, COD in high-salt wastewater can be degraded to 1935.62mg / L from 29465mg / L, the COD degradation rate is 93.43%, and an effective technical support is provided for biological treatment on high-salt industrial wastewater which is hard to treat.

Description

technical field

[0001] The invention belongs to the technical field of screening and compounding of functional microbial flora, and in particular relates to a microbial flora for treating high-salt industrial wastewater and its application. Background technique

[0002] The salinity in industrial wastewater is high, some of which exceed 20% (w / v), and the composition is complex, mostly containing alkanes, aromatics, carbohydrates, lipid compounds and nitrogen-containing compounds, as well as a large number of soluble inorganic salts, such as Cl - , SO 4 2- 、Na + and Ca 2+ Wait. High concentrations of inorganic salts will inhibit and poison the microorganisms in the sludge, cause the microorganisms to lose their degradation ability, and destroy the bacterial structure of the activated sludge, and even cause the collapse of the biochemical treatment process. There are always problems such as high cost, low efficiency, long cycle, poor stability, and secondary pollution, w...

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