Nitrite bacterium culture promoter and preparation method thereof

Abstract

The invention discloses a nitrite bacterium culture promoter, which consists of metal salts, polyamine substances, organic acid hydroxylamine and Na2SO3, wherein in parts by weight, the content of the metal salts is 40-100 parts by weight, preferably 50-80 parts by weight; the content of the polyamine substances is 5-30 parts by weight, preferably 10-20 parts by weight; the content of the organic acid hydroxylamine is 0.05-1.5 parts by weight, preferably 0.1-1.0 part by weight; and the content of the Na2SO3 is 10-40 parts by weight, preferably 20-30 parts by weight; the metal salts include calcium salt, ferrous salt and copper salt; and the molar ratio of Ca<2+> to Fe<2+> to Cu<2+> is (5-15) to (1-8) to (0.5-5), and preferably (8-12) to (2-6) to (1-4). The promoter is simple in formula and easy for preparing; and the promoter can be applied to the culture process of the nitrite bacteria and the promoter can be also directly added to a sewage treatment system, so that the starting of partial nitrification-denitrification and partial nitrification-anaerobic ammonia oxidation processes is accelerated and the stable running of the processes is achieved.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to a nitrous bacteria cultivation accelerator 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 an...

AI Technical Summary

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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