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Advanced treatment method for urban sewage

A technology of advanced treatment and urban sewage, applied in the field of water treatment, can solve the problems of not meeting the requirements of sustainable development, waste of resources, etc., and achieve the effect of realizing resource utilization, avoiding pollution, and improving water quality

Inactive Publication Date: 2019-01-01
重庆渝茁科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing sewage treatment methods are mainly based on standard discharge, and seldom consider the utilization of waste resources. Although this method can also realize sewage treatment, it is likely to cause a great waste of resources, which is not in line with modern society's requirements for sustainable development. Continuous Development Requirements

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  • Advanced treatment method for urban sewage

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Experimental program
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Effect test

Embodiment 1

[0031] The urban sewage advanced treatment method provided in this embodiment includes the following steps:

[0032] (1) Add a multifunctional sewage treatment agent to the mixed sewage slurry at a mass volume ratio of 1g: 1L, stir at a speed of 155r / min for 12 hours, and then let it stand for settlement. After the settlement is completed, take the supernatant Carry out activated carbon adsorption treatment, and at the same time collect the settled sludge into the sludge collection tank;

[0033] (2) Perform microbial denitrification treatment on the liquid after the adsorption treatment, then filter it, perform ultraviolet sterilization treatment on the obtained filtrate, and collect the obtained filter residue into the sludge collection tank at the same time;

[0034] (3) performing reverse osmosis treatment on the sterilized liquid, collecting the obtained fresh water, and carrying out distillation treatment to the obtained concentrated water, and then collecting the distil...

Embodiment 2

[0052] The urban sewage advanced treatment method provided in this embodiment includes the following steps:

[0053] (1) Add a multifunctional sewage treatment agent to the mixed sewage slurry at a mass volume ratio of 1g: 1L, stir at a speed of 155r / min for 12 hours, and then let it stand for settlement. After the settlement is completed, take the supernatant Carry out activated carbon adsorption treatment, and at the same time collect the settled sludge into the sludge collection tank;

[0054] (2) Perform microbial denitrification treatment on the liquid after the adsorption treatment, then filter it, perform ultraviolet sterilization treatment on the obtained filtrate, and collect the obtained filter residue into the sludge collection tank at the same time;

[0055] (3) performing reverse osmosis treatment on the sterilized liquid, collecting the obtained fresh water, and carrying out distillation treatment to the obtained concentrated water, and then collecting the distil...

Embodiment 3

[0070] The urban sewage advanced treatment method provided in this embodiment includes the following steps:

[0071] (1) Add a multifunctional sewage treatment agent to the mixed sewage slurry at a mass volume ratio of 1g: 1L, stir at a speed of 155r / min for 12 hours, and then let it stand for settlement. After the settlement is completed, take the supernatant Carry out activated carbon adsorption treatment, and at the same time collect the settled sludge into the sludge collection tank;

[0072] (2) Perform microbial denitrification treatment on the liquid after the adsorption treatment, then filter it, perform ultraviolet sterilization treatment on the obtained filtrate, and collect the obtained filter residue into the sludge collection tank at the same time;

[0073] (3) performing reverse osmosis treatment on the sterilized liquid, collecting the obtained fresh water, and carrying out distillation treatment to the obtained concentrated water, and then collecting the distil...

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Abstract

The invention provides an advanced treatment method for urban sewage. A novel sewage treatment agent is adopted to treat sewage slurry, and are matched with treatment processes such as activated carbon adsorption treatment, filtration treatment, microbial denitrogenation treatment, UV sterilization treatment, reverse osmosis treatment and distillation treatment to directly treat the sewage slurryinto mud cakes, fresh water and crystalloid salt; the obtained mud cakes are prepared into sludge-based activated carbon with excellent adsorption properties. The quality of the freshwater treated bythe advanced treatment method disclosed by the invention reaches the reuse standards and can be directly recycled; the obtained crystalloid salt can be delivered to the outside for treatment. By usingthe sewage treatment method disclosed by the invention to carry out sewage slurry treatment, the backwater rate is improved, zero discharge of sewage is realized, resource utilization of the sewage and the sludge is realized and the requirements of sustainable development are met.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a method for advanced treatment of urban sewage. Background technique [0002] Urban sewage treatment is the centralized treatment of urban sewage discharged from the city and sewage discharged from factories, that is to say, urban sewage includes domestic sewage and industrial sewage. Due to long-term accumulation, the sewage contains a large amount of harmful substances such as mud, bacteria, heavy metal ions, inorganic compounds and organic compounds. If it is directly discharged into the water body without treatment, it will bring heavy pressure to the water environment and will seriously The health of people's drinking water poses a serious threat to limited water resources, and even threatens people's survival and development environment. Most of the existing sewage treatment methods are mainly based on standard discharge, and seldom consider the utilization of was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F11/12
CPCC02F1/001C02F1/04C02F1/281C02F1/283C02F1/285C02F1/286C02F1/32C02F1/441C02F1/50C02F1/5236C02F1/5263C02F1/56C02F1/72C02F3/34C02F9/00C02F11/122C02F2001/007C02F2303/04
Inventor 曾文李艳琼张书张岭江
Owner 重庆渝茁科技有限公司
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