Nitrite bacteria growth promoter and preparation method thereof

Abstract

The invention discloses a nitrite bacteria growth promoter including the components: 40-100 parts by weight, preferably 50-80 parts by weight, of metal salts; 5-30 parts by weight, preferably 10-20 parts by weight, of an amine substance; 0.05-1.5 parts by weight, preferably 0.1-1.0 part by weight, of organic acid hydroxylamine; and 10-40 parts by weight, preferably 20-30 parts by weight, of Na2SO3; the metal salts comprise a calcium salt, a magnesium salt, a ferrous salt and a copper salt, and the molar ratio of Ca<2+> to Mg<2+> to Fe<2+> to Cu<2+> is (5-15) to (5-25) to (1-8) to (0.5-5), preferably (8-12) to (10-20) to (2-6) to (1-4). The promoter has the advantages of simple formula and easy preparation, can be used in the cultivation process of nitrite bacteria, can also be directly added into a sewage treatment system, accelerates starting of short-cut nitrification-denitrification and short-cut nitrification-anaerobic ammonium oxidation processes and achieves stable operation.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to a nitrous bacteria growth promoter and a preparation method thereof. Background technique [0002] Biological denitrification is mainly accomplished by nitrifying bacteria and denitrifying bacteria. Nitrifying bacteria are chemotrophic microorganisms. Biological cells can only use the energy stored in the form of ATP, etc., and cannot directly use the free energy released by chemical reactions. In aerobic metabolism, ATP is mainly synthesized by oxidative phosphorylation of the respiratory chain. The ammonia oxidative phosphorylation efficiency is very low, and the ATP that can be produced is very limited, and the energy is mainly used for electron transition to a higher energy level, which makes the growth of nitrifying bacteria very slow, and the generation period is 8~36h. The cell wall of nitrifying bacteria has low peptidoglycan content and high protein and fat co...

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Problems solved by technology

CN201110315549.6 discloses a short-range nitrification and denitrification granular sludge cultivation method, which is characterized in that 5-15mg / L hydroxylamine is regularly added; CN201010168453.7 discloses a method for quickly starting an anoxic ammonia oxidation biofilter, It is characterized in that hydroxylamine is added in step (2) to induce the inoculated sludge to transform into anoxic ammonium oxidation biofilm. The above invention mainly utilizes the inhibitory effect of hydroxylamine on nitrite oxidizing bacteria to promote short-term nitrification, but slow growth The growth of nitrous bacteria does not promote the growth of

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