A kind of nitrous bacteria growth promoter and preparation method thereof

A technology of growth promoter and nitrous bacteria, which is applied in the field of nitrous bacteria growth promoter and its preparation, can solve the problems of no promoting effect and slow growth of nitrous bacteria itself, and achieves enhanced reducibility and shortened enzymatic reaction process. , the effect of accelerating cell proliferation

Active Publication Date: 2018-03-16
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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  • A kind of nitrous 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] Table 1 Formula and ratio of accelerator

[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.

[00...

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Abstract

The invention discloses a growth accelerator for nitrous acid bacteria, which comprises metal salts, polyamine substances, organic acid hydroxylamine and Na2SO3, in parts by weight, the metal salt is 40-100 parts by weight, preferably 50-80 parts by weight; Polyamines are 5-30 parts by weight, preferably 10-20 parts by weight; organic acid hydroxylamine is 0.05-1.5 parts by weight, preferably 0.1-1.0 parts by weight; Na2SO3 is 10-40 parts by weight, preferably 20-30 parts by weight parts by weight; the metal salts are calcium salts, magnesium salts, ferrous salts and copper salts, and the molar ratio of Ca2+, Mg2+, Fe2+ and Cu2+ is (5~15):(5~25):(1~8) :(0.5~5), preferably (8~12):(10~20):(2~6):(1~4). The accelerator has a simple formula and is easy to prepare. It can be used in the cultivation process of nitrous bacteria, and can also be directly added to the sewage treatment system to accelerate the start-up of short-range nitrification-denitrification and short-range nitrification-anammox achieve 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 Patents(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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