Denitrification microorganism culture accelerator, preparation method and applications thereof

Abstract

The present invention discloses a denitrification microorganism culture accelerator, which comprises a metal salt, a polyamine substance, an organic acid hydroxylamine and an organic acid salt, wherein the metal salt comprises a calcium salt, a copper salt, a magnesium salt and/or a ferrous salt. The preparation method comprises: (1) preparing a metal salt solution according to a certain composition and a certain weight part ratio; and (2) adding a polyamine substance, an organic acid hydroxylamine and an organic acid salt into the metal salt solution before use. According to the present invention, the denitrification microorganism culture accelerator has advantages of simple formula and easy preparation, the cultured denitrifying microorganisms have characteristics of high activity and strong impact resistance, and can perform denitrogenation reactions by using nitrite nitrogen as the electron acceptor, and the accelerator can be used in the denitrification microorganism culture process using nitrite nitrogen as the electron acceptor and can further be directly poured into the existing sewage treatment system so as to promote the smooth operating of the short-term nitrification and denitrification process.

Description

technical field [0001] The invention belongs to the field of biological technology, and in particular relates to a denitrification microorganism cultivation accelerator using nitrite nitrogen as an electron acceptor, a preparation method and application thereof. Background technique [0002] Denitrifiers are facultative anaerobic microorganisms that convert nitrate nitrogen or nitrite nitrogen into nitrogen gas. Such microorganisms can generally induce nitrate reductase A and nitrite reductase required for denitrification only under anaerobic conditions, and use nitrate or nitrite as the electron acceptor for denitrification. Due to the different environments required by microorganisms, in the whole denitrification process of sewage treatment, that is, the nitrification process and denitrification process, the impact resistance of the system is relatively poor. High concentrations of ammonia nitrogen and nitrate nitrogen will inhibit the growth of nitrifying bacteria. The c...

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Problems solved by technology

Due to the different environments required by microorganisms, in the whole denitrification process of sewage treatment, that is, the nitrification process and denitrification process, the impact resistance of the system is relatively poor. High concentrations of ammonia nitrogen and nitrate nitrogen will inhibit the growth of nitrifying bacteria. The concentration of dissolved oxygen and insufficient carbon source will inhibit the growth of denitrifying bacteria, thus affecting the overall effect of nitrogen removal

However, there is no effective way to obtain denitrifying bacteria at present, so that the obtained denitrifying bacteria can be used in sewage treatment for nitrification and denitrification process.

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