Nitrite bacteria growth promoter and preparation method thereof

A technology of growth promoter and nitrous acid bacteria, which is applied in the field of nitrous acid bacteria growth promoters and its preparation, can solve the problems of slow growth of nitrous acid bacteria and no promotion effect, shorten the enzymatic reaction process and enhance the reduction , the effect of prolonging the service life

Active Publication Date: 2016-06-01
CHINA PETROLEUM & CHEM CORP +1
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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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  • Nitrite bacteria growth promoter and preparation method thereof

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Embodiment Construction

[0020] The solutions of the present invention will be described in detail below in conjunction with specific embodiments.

[0021] The formulations of the nitrous bacteria growth promoters of Examples 1-6 and Comparative Examples 1-7 are shown in Table 1.

[0022] Formulation and ratio of accelerator of table 1

[0023]

[0024] Activated sludge from a sewage treatment plant was used as the inoculum to start the short-range nitrification process. During the start-up process, a certain concentration of solution was configured according to the formula in Table 1, and then added to Examples 1-6 and Comparative Examples 1-7 respectively. After dosing, the concentration of the accelerator in the enriched culture solution was 10mg / L. After 20 days of start-up, the number of nitrous bacteria in the activated sludge was sampled under a microscope (counted by a bacterial counting plate), and water samples were taken to analyze the nitrosation rate. The results are shown in Table 2....

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34
Inventor 高会杰郭志华孙丹凤赵胜楠
Owner CHINA PETROLEUM & CHEM CORP
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