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Municipal wastewater treatment method

A technology of municipal sewage and treatment method, applied in the field of municipal sewage treatment, can solve the problem of difficult recycling of municipal sewage, and achieve the effect of high sewage treatment quality, reduction of bacterial and virus content, and improvement of capacity.

Inactive Publication Date: 2020-01-14
广东一业建设股份有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because municipal sewage is mixed with kitchen waste such as grease and food residue, it is very suitable for the reproduction of various microorganisms. It usually contains a large number of bacteria and viruses, which makes it difficult to recycle municipal sewage after general physical filtration. So there is still room for improvement

Method used

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  • Municipal wastewater treatment method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] A kind of flocculant, the preparation method of flocculant is as follows:

[0070] a. Add polyacrylamide, methylcellulose, casein, and 2-aminoisonicotinic acid to the grinding equipment and grind them into powders with a particle size of 100nm±10nm;

[0071] b. Add 100kg of polyacrylamide powder, 20kg of methyl cellulose powder, 5kg of casein powder, and 0.01kg of 2-aminoisonicotinic acid powder into the stirred tank, close the stirred tank, feed in nitrogen, exhaust air, and rotate at 150r / min , stirred for 10 minutes to form a premix;

[0072] c. Put the premix into a granulator and press to form a granular flocculant, and then pack it for dry storage.

Embodiment 2

[0074] A kind of flocculant, the preparation method of flocculant is as follows:

[0075] a. Add polyacrylamide, methylcellulose, casein, and 2-aminoisonicotinic acid to the grinding equipment and grind them into powders with a particle size of 100nm±10nm;

[0076] b. Add 100kg of polyacrylamide powder, 22.5kg of methyl cellulose powder, 7.5kg of casein powder, and 0.015kg of 2-aminoisonicotinic acid powder into the stirred tank, close the stirred tank, feed in nitrogen, discharge air, and rotate at a speed of 150r / min, stirring for 10min to form a premix;

[0077] c. Put the premix into a granulator and press to form a granular flocculant, and then pack it for dry storage.

Embodiment 3

[0079] A kind of flocculant, the preparation method of flocculant is as follows:

[0080] a. Add polyacrylamide, methylcellulose, casein, and 2-aminoisonicotinic acid to the grinding equipment and grind them into powders with a particle size of 100nm±10nm;

[0081] b. Add 100kg of polyacrylamide powder, 25kg of methyl cellulose powder, 10kg of casein powder, and 0.02kg of 2-aminoisonicotinic acid powder into the stirred tank, close the stirred tank, feed in nitrogen, and exhaust air at a speed of 150r / min , stirred for 10 minutes to form a premix;

[0082] c. Put the premix into a granulator and press to form a granular flocculant, and then pack it for dry storage.

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Abstract

The invention relates to the technical field of sewage treatment, aims to the problem that municipal wastewater is hard to recycle or use after common physical filtering, and provides a municipal wastewater treatment method. According to the technical scheme, the method comprises the following steps: S1, performing primary filtering so as to obtain filtered water; S2, adding a flocculant into thefiltered water so as to obtain a flocculant mixed liquid; S3, heating the flocculant mixed liquid till boiling; S4, performing ultraviolet radiation, and performing sterilization and disinfection through vapor; S5, performing condensation; and S6, performing secondary filtering, wherein the flocculant comprises 100 parts of polyacrylamide, 20-25 parts of methylcellulose, 5-10 parts of casein and 0.01-0.02 part of 2-amino isonicotinic acid. The flocculant mixed liquid is heated till boiling to kill a part of bacteria, the vapor is radiated through an ultraviolet lamp, then a good permeation effect is achieved, a very good ultraviolet sterilization and disinfection effect can be achieved, the content of bacterial viruses in final pure water can be greatly reduced, a good sewage treatment effect can be achieved, the treated pure water can be recycled, waste source waste can be reduced, and meanwhile, pollution to the environment and water resources can be reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a municipal sewage treatment method. Background technique [0002] With the development of society, the population living in the city is getting bigger and bigger, and more and more sewage is produced in people's daily life. If the sewage is directly discharged into the river, it will cause serious pollution to the environment. Therefore, it is necessary to dispose of the sewage It can be discharged or recycled after treatment. [0003] Because municipal sewage is mixed with kitchen waste such as grease and food residue, it is very suitable for the reproduction of various microorganisms. It usually contains a large number of bacteria and viruses, which makes it difficult to recycle municipal sewage after general physical filtration. So there is still room for improvement. Contents of the invention [0004] In view of the deficiencies in the prior art, the purpose of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCC02F9/00C02F1/001C02F1/32C02F1/04C02F1/56C02F1/54C02F2303/04
Inventor 黄喜波徐其信曾明湖陈燕梅斌罗锦桐
Owner 广东一业建设股份有限公司
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