Promoter for culturing ammonia oxidizing bacteria and preparation method of promoter

Abstract

The invention discloses a promoter for culturing ammonia oxidizing bacteria. The promoter comprises the following components in parts by weight: 40-100 parts of metal salts, preferably 50-80 parts of metal salts, 5-30 parts of polyamine substance, preferably 10-20 parts of polyamine substance, 0.05-1.5 parts of hydroxylamine inorganic acid, preferably 0.1-1.0 part of hydroxylamine inorganic acid, and 10-40 parts of Na2SO3, preferably 20-30 parts of Na2SO3, wherein the metal salts comprise calcium salt, magnesium salt and copper salt, and the molar ratio of Ca<2+> to Mg<2+> to Cu<2+> is (5-15) to (5-25) to (0.5-5), preferably (8-12) to (10-20) to (1-4). The promoter is simple in composition and easy to prepare, can be used in a culture process of ammonia oxidizing bacteria, and also can be directly fed into a sewage treatment system, so that the starting of short-cut nitrification-denitrification and short-cut nitrification-anaerobic ammonia oxidation processes is accelerated, and the stable operation is realized.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to an accelerator for cultivating ammonia oxidizing bacteria 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 pro...

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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 ammonia oxidizing bacteria did not promote their own growth

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