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A method for classified treatment and reuse of rural domestic sewage

A domestic sewage and graded treatment technology, applied in water/sewage multi-stage treatment, biological water/sewage treatment, water/sewage treatment, etc., can solve problems such as insufficient utilization of water resources, incomplete treatment, etc., to improve the overall mechanical strength, increased nitrification capacity, and improved removal capacity

Active Publication Date: 2022-04-12
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing methods of rural sewage treatment, the sewage is treated to a unified non-drinking standard and then discharged, and the domestic sewage is not treated according to actual needs, the treatment is not thorough, and the water resources are not fully utilized. Therefore, it is urgent Need a method for graded treatment and reuse of rural domestic sewage to meet different usage needs

Method used

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  • A method for classified treatment and reuse of rural domestic sewage
  • A method for classified treatment and reuse of rural domestic sewage

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]Embodiment 1: a kind of method for rural domestic sewage classification treatment and reuse, specifically comprises the following steps:

[0035] S1: Preprocessing

[0036] The rural domestic sewage is pumped into the filter tank, and the solid impurities in the sewage are filtered out, and then the filtered sewage is pumped into the packed tower through the pump, and the ceramic filler in the packed tower is used to initially remove phosphorus and oxygen from the sewage. Get the primary treatment water body;

[0037] S2: Membrane biological reaction treatment

[0038] The above-mentioned primary treatment water is pumped into the membrane bioreactor, and the primary treatment water is simultaneously nitrified, denitrified, and denitrified by anaerobic, aerated and aerobic methods, and then the above-mentioned treated water is pumped through the suction pump After being filtered by the ultrafiltration membrane, fine suspended solids and bacteria are removed. Finally, t...

Embodiment 2

[0047] Embodiment 2: a kind of method for rural domestic sewage classification treatment and reuse, specifically comprises the following steps:

[0048] S1: Preprocessing

[0049] The rural domestic sewage is pumped into the filter tank, and the solid impurities in the sewage are filtered out, and then the filtered sewage is pumped into the packing tower through the pump, and the waste water is initially dephosphorized and deoxygenated by using the packing in the packing tower to obtain The primary treatment water body, wherein, the specific components of the above-mentioned fillers include by weight components: 5 parts of rubber powder, 5 parts of polyacrylamide aqueous solution, 4 parts of bentonite, 1 part of maleic anhydride, 0.4 parts of tert-butyl hydroperoxide, 0.8 The preparation method of the above-mentioned filler is as follows: ① Take the rubber powder, bentonite and maleic anhydride of the above-mentioned weight components, mix them, ball mill them for 1 hour, then...

Embodiment 3

[0060] Embodiment 3: a kind of method for rural domestic sewage classification treatment and reuse, specifically comprises the following steps:

[0061] S1: Preprocessing

[0062] Pump the rural domestic sewage into the filter tank, and filter out the solid impurities in the sewage, and then pump the filtered sewage into the packing tower through the pump, and use the packing in the packing tower to perform preliminary phosphorus and oxygen removal on the sewage, Obtain primary treatment water body, wherein, the specific composition of above-mentioned filler comprises by weight component: 9 parts of rubber powder, 6 parts of polyacrylamide aqueous solution, 5 parts of bentonite, 2 parts of maleic anhydride, 0.45 part of tert-butyl hydroperoxide, 1.1 part of biological enzyme, the preparation method of the above-mentioned filler is: ① Take the rubber powder, bentonite and maleic anhydride of the above-mentioned weight components, mix them, ball mill for 1.5 hours, then add them...

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Abstract

The invention discloses a method for classified treatment and reuse of rural domestic sewage, which belongs to the technical field of sewage treatment. It specifically includes the following steps: S1: pretreatment; S2: membrane biological reaction treatment; S3: preparation of composite modified photocatalyst; S4: photocatalytic oxidation treatment; according to different use requirements, the rural domestic sewage is graded and treated, among which, the The water body after pretreatment and membrane bioreaction treatment can be used for non-drinking functions such as irrigation, washing, sanitation, landscaping, etc. On the basis of the above, the water body can be used as drinking water after photocatalytic oxidation treatment. The social benefits are huge.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a method for classified treatment and reuse of rural domestic sewage. Background technique [0002] As China goes further and further on the road of industrial society transformation, fewer and fewer people are actually engaged in agriculture in the country. However, it is undeniable that China is still a large agricultural country. China has a population of 1.4 billion, more than half of which are rural population. my country's rural environmental problems are becoming more and more prominent, among which rural sewage has gradually become the top priority. Therefore, rural sewage treatment systems have become an urgent need in rural areas. However, rural sewage has the characteristics of unstable water volume and scattered, so it is suitable for development in rural areas The process of sewage treatment has very important practical significance for the sewage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14B01J27/24B01J35/10C02F11/122C02F11/143
CPCC02F9/00B01J27/24C02F1/001C02F3/302C02F1/725C02F1/66C02F1/30C02F11/143C02F11/122B01J35/33B01J35/61B01J35/39
Inventor 崔飞剑魏东洋杜宏伟王龙乐谭秀琴覃光雄张宗尧吴飞宇李文静曾凡棠房怀阳朱志奇侯文彪
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP