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Nitrifying bacterial growth promoting agent, preparation method and applications thereof

A technology of growth promoters and nitrifying bacteria, applied in chemical instruments and methods, adding compounds to stimulate growth, bacteria, etc., can solve problems such as increasing sludge production, improve treatment effect, shorten enzymatic reaction process, Effect of improving settleability and stability

Active Publication Date: 2016-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, since the adsorbents are mainly zeolite powder, diatomaceous earth, powdered activated carbon or fly ash, the addition of these adsorbents will inevitably increase the sludge production.

Method used

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  • Nitrifying bacterial growth promoting agent, preparation method and applications thereof
  • Nitrifying bacterial growth promoting agent, preparation method and applications thereof

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Embodiment Construction

[0018] The solutions of the present invention will be described in detail below in conjunction with specific embodiments.

[0019] The formulations of the nitrifying bacteria growth promoters of Examples 1-8 and Comparative Examples 1-4 are shown in Table 1.

[0020] Formulation and ratio of accelerator of table 1

[0021]

[0022] The COD concentration of the main pollutants contained in the wastewater discharged by a certain enterprise is about 800mg / L, and the ammonia nitrogen concentration is about 200mg / L. The concentration is less than 60mg / L, but the ammonia nitrogen concentration is still as high as 60mg / L or more. Using the accelerator configured in the above table, the concentration is 0.5g / L, and the accelerator concentration in the sewage is added every day at 20mg / L. After 15 days of adding, the removal rate of ammonia nitrogen has increased by more than 10%. Stop adding , the system continues to run for 10 days, water samples are taken to analyze the concent...

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Abstract

The present invention discloses a nitrifying bacterial growth promoting agent, which comprises, by weight, 40-100 parts of a metal salt and 5-30 parts of a polyamine substance, preferably 50-80 parts of a metal salt and 10-20 parts of a polyamine substance, wherein the metal salt is a calcium salt, a magnesium salt, a ferrous salt and a copper salt, and a molar ratio of Ca<2+> to Mg<2+> to Fe<2+> to Cu<2+> is (5-15):(5-25):(1-8):(0.5-5), preferably (8-12):(10-20):(2-6):(1-4). According to the present invention, the formula of the nitrifying bacterial growth promoting agent is simple, the preparation is easy, the nitrifying bacterial growth promoting agent can be used for the nitrifying bacterial culture process and can further be directly poured into the sewage treatment system so as to make the nitrifying bacteria rapidly grow and breed within a short time, and the culture nitrifying bacteria have characteristics of high activity and strong impact resistance.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to a growth accelerator for nitrifying bacteria and its preparation method and application. Background technique [0002] In the biological nitrogen removal method, whether it is the traditional nitrification-denitrification, or the new short-range nitrification-denitrification and short-range nitrification-ANAMMOX, the ammonia nitrogen needs to be removed through the nitrification of nitrifying 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 hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/38C12N1/20C02F3/34C02F3/30
Inventor 孙丹凤高会杰郭志华赵胜楠许谦
Owner CHINA PETROLEUM & CHEM CORP
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