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Dominant microbial agent for water pollution control and preparation method thereof

A microbial inoculum, water pollution technology, applied in the methods of using microorganisms, water pollutants, water/sludge/sewage treatment, etc., can solve the problem of high professional cost, achieve high universality, low cost, professional low-level effects

Pending Publication Date: 2019-11-12
SHANGHAI ENVIRONMENTAL & SANITARY ENG DESIGN INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the defects of strong professionalism and high cost of the existing dominant bacteria sewage treatment method, the present invention provides a dominant microbial agent for water pollution control and its preparation method, and prepares the dominant microbial microbial bacteria according to the method provided by the present invention agent, easy to operate, and conducive to the enrichment of dominant bacteria

Method used

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Examples

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preparation example Construction

[0035] The present invention provides a kind of preparation method of the dominant microbial bacterial agent of water pollution control, comprises the following steps:

[0036] (1) Get the activated sludge of the aerobic tank of the sewage treatment plant, mix the activated sludge of the aerobic tank with the stock solution of EM bacteria according to the ratio of mass ratio 100:5~15, and obtain the mixed sludge;

[0037] (2) Take the sewage to be treated, sterilize it and concentrate it to 5-10% of the original volume, and adjust the pH value to 8-10 to obtain concentrated sewage;

[0038] (3) Mix the mixed sludge with the concentrated sewage, and culture them under the conditions of dissolved oxygen 3.0-3.5 mg / L, 1.5-2.0 mg / L and 0.5-1.0 mg / L successively for 5-7 days to obtain cultures;

[0039] (4) separating the solid and liquid of the culture to obtain a solid part and a liquid part;

[0040] (5) Filter the liquid part through a 0.45 μm microporous membrane to obtain Pr...

Embodiment 1

[0063] (1) Take the activated sludge from the aerobic tank of a sewage treatment plant in a certain place, mix the activated sludge from the aerobic tank with the stock solution of EM bacteria according to the ratio of 100:10 in mass ratio, and obtain the mixed sludge;

[0064] (2) Take the waste water of a paper mill, after high-pressure steam sterilization, concentrate the sterilized waste water to 10% of the original volume, and adjust the pH value to 8 to obtain concentrated sewage;

[0065] (3) Mix the mixed sludge and concentrated sewage according to the ratio of 1g: 200ml, and cultivate them under the conditions of dissolved oxygen 3.0-3.5mg / L, 1.5-2.0mg / L and 0.5-1.0mg / L successively for 5 days. Stir at a speed of 200rpm, and the culture temperature is 20°C; obtain the culture;

[0066] (4) centrifuging the culture to obtain a solid part and a liquid part;

[0067] (5) Filter the liquid part through a 0.45 μm microporous membrane to obtain Precipitate 1;

[0068] (6)...

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Abstract

The invention provides a dominant microbial agent for water pollution control and a preparation method thereof and relates to the technical field of sewage treatment. The preparation method of the dominant microbial agent comprises the following steps: mixing activated sludge in an aerobic tank with an EM bacterial stock solution to obtain mixed sludge; sterilizing sewage to be treated, and performing concentration to obtain concentrated sewage; culturing and domesticating the mixed sludge with the concentrated sewage, and reducing the content of dissolved oxygen in a gradient way in the culturing process; and separating solid and liquid of culture obtained in culturing, respectively extracting microbes from the solid part and the liquid part, mixing the microbes of the solid part with themicrobes of the liquid part, and performing enriching to obtain the dominant microbial agent. The preparation method is simple and convenient to operate and easy to popularize. The dominant microbialagent has a COD degradation rate of degrading the sewage to be treated being 80 percent or more.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a dominant microbial bacterial agent for water pollution treatment and a preparation method thereof. Background technique [0002] The total amount of fresh water available in the world is less than 1% of the world's total water storage, and this part of fresh water is not inexhaustible. Human survival and social development are inseparable from the support of water resources. With the continuous increase of global population and the continuous development of industry and agriculture, the problem of water resource shortage is becoming more and more serious. Human activities have caused a large amount of water pollution, and the discharged sewage has constituted a serious damage to the water environment ecosystem. Therefore, the resource management of water pollution has become the focus of attention today, because the resource management of water pollution can restrain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/36C02F3/34C02F101/30
CPCC12N1/36C02F3/34C02F2101/30
Inventor 张瑞娜李传运王声东刘庄泉金宁奔施庆燕
Owner SHANGHAI ENVIRONMENTAL & SANITARY ENG DESIGN INST CO LTD
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