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Municipal domestic sewage treatment method

A domestic sewage and treatment method technology, applied in the direction of biological water/sewage treatment, neutralized water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problem of increasing the difficulty of municipal sewage treatment, refractory substances, and effluent indicators up to standard Increased difficulty and other issues to achieve the effect of improving overall competitiveness and stability, and increasing degradation rate

Pending Publication Date: 2018-11-13
CHENGDU MUNICIPAL ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, municipal sewage plants often receive and process complex industrial sewage. The increase in toxic and refractory substances in industrial sewage increases the difficulty of municipal sewage treatment to a certain extent.
At the same time, due to the impact and change of water quality, the difficulty of meeting the standards of various water discharge indicators has also increased accordingly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] For the microbial composite bacterial agent provided in this embodiment, firstly get 20 parts of nitrifying bacteria, 15 parts of saccharomyces, 12 parts of Bacillus subtilis, 30 parts of Bacillus coagulans, 14 parts of Bacillus licheniformis and 9 parts of lactic acid bacteria in dry weight proportions of the thalline and mix , and then add parts by weight of C after mixing 12 h 22 o 11 7 parts were mixed to obtain a microbial composite bacterial agent.

[0019] The nitrifying bacteria, yeast, Bacillus subtilis, Bacillus coagulans, Bacillus licheniformis and lactic acid bacteria are available in the market. This embodiment specifically uses the nitrifying bacteria, yeast and subtilis of Cangzhou Xindadi Biotechnology Co., Ltd. Bacillus, Bacillus coagulans, Bacillus licheniformis and Lactobacillus. The C 12 h 22 o 11 It is also a source of products that can be purchased on the market. Due to the large number of products, each province and city has its own manufact...

Embodiment 2

[0021] For the microbial composite bacterial agent provided in this embodiment, firstly take 25 parts of nitrifying bacteria, 16 parts of saccharomyces, 13 parts of Bacillus subtilis, 33 parts of Bacillus coagulans, 15 parts of Bacillus licheniformis and 11 parts of lactic acid bacteria in dry weight proportions and mix , and then add parts by weight of C after mixing 12 h 22 o 11 8 parts were mixed to obtain a microbial composite bacterial agent.

Embodiment 3

[0023] For the microbial composite bacterial agent provided in this embodiment, firstly get 28 parts of nitrifying bacteria, 18 parts of saccharomyces, 15 parts of Bacillus subtilis, 36 parts of Bacillus coagulans, 17 parts of Bacillus licheniformis and 12 parts of lactic acid bacteria in dry weight proportions and mix , and then add parts by weight of C after mixing 12 h 22 o 11 9 parts were mixed to obtain a microbial composite bacterial agent.

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PUM

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Abstract

The invention discloses a municipal domestic sewage treatment method. Firstly, solid objects in sewage are removed, a pH value is regulated, oxygen is introduced, and finally a microbial composite agent is added to perform sewage treatment, wherein the microbial composite agent is prepared from, by dry weight of unit thallus, 25 parts of nitrifying bacteria, 16 parts of saccharomycetes, 13 parts of bacillus subtilis, 33 parts of bacillus coagulans, 15 parts of bacillus licheniformis, 11 parts of lactic acid bacteria and 118 parts of C12H22O. By utilizing the microbial composite agent and the synergistic effect of the various bacteria of the microbial composite agent, the overall competitiveness and stability of microbial flora can be improved, the degradation rate of various pollutants canbe remarkably improved, and the method has actural application value on municipal domestic sewage treatment.

Description

technical field [0001] The invention relates to a municipal domestic sewage treatment method, which belongs to the technical field of sewage treatment. Background technique [0002] With the acceleration of urban development and the gradual improvement of people's awareness of environmental protection, the requirements for municipal sewage treatment and discharge standards have become increasingly stringent. The addition of compound bacterial agents is of great significance to the treatment and compliance of municipal sewage. [0003] At present, tooth decay in municipal sewage is treated by biological methods, in which the microbial flora in the sludge plays a major role. However, municipal sewage plants often receive and process complex industrial sewage. The increase in toxic and refractory substances in industrial sewage has increased the difficulty of municipal sewage treatment to a certain extent. At the same time, due to the impact and change of water quality, the d...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/001C02F3/02C02F1/66C02F3/34C02F3/347C02F2209/08C02F2209/14C02F2209/11
Inventor 王东赵涛
Owner CHENGDU MUNICIPAL ENG GRP