Ammonia oxidizing bacterium growth promoter and preparation method

Abstract

The invention discloses an ammonia oxidizing bacterium growth promoter, which consists of metal salts, polyamine substances, inorganic acid hydroxylamine and Na2SO3, wherein in parts by weight, the metal salts account for 40-100 parts by weight, preferably 50-80 parts by weight; the polyamine substances account for 5-30 parts by weight, preferably 10-20 parts by weight; the inorganic acid hydroxylamine accounts for 0.05-1.5 parts by weight, preferably 0.1-1.0 part by weight; and the Na2SO3 accounts for 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 growth promoter is simple in formula and easy to prepare; and the growth promoter can be applied to the culture process of ammonia oxidizing bacteria and can be also directly added to a sewage treatment system, so as to accelerate the starting of a partial nitrification-denitrification and partial nitrification-anaerobic ammonia oxidation process and to achieve stable running.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to an ammonia oxidizing bacteria growth promoter and a preparation method. 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...

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 Ammonia oxidizing bacteria did not promote their own growth

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