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Urban sewage treatment method

A treatment method and technology of urban sewage, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of not being utilized, wasting treatment capacity, wasting water sources, etc., to achieve The effect of improving utilization rate, reducing construction and reducing sewage volume

Inactive Publication Date: 2015-11-25
孙源
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be said to be a waste. First, the water source is not used, and the second is the waste of processing capacity.

Method used

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  • Urban sewage treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of concrete steps of the treatment method of urban sewage are as follows:

[0034] Sewage enters the plant → screen slag removal → heavy metal chelating agent sedimentation sand removal slag removal → primary filtration to obtain sewage A and filtered water B containing large particles of dirt. Sewage A undergoes traditional biochemical treatment and then settles and removes mud to obtain filtered Water C and sludge; sludge for sludge treatment;

[0035] Filtered water B is finely filtered to obtain filtered water D and reclaimed water;

[0036] Reclaimed water leaves the factory directly; filtered water D and filtered water C are combined, disinfected with calcium hypochlorite, and shipped as agricultural water;

[0037] Among them, sand filtration equipment and microfiltration equipment are used for primary filtration, and the pore size of microfiltration is 0.1 micron; cross-flow filtration is used for primary filtration; hollow fiber ultrafiltration membrane...

Embodiment 2

[0043] A kind of concrete steps of the treatment method of urban sewage are as follows:

[0044] Sewage enters the plant → screen slag removal → heavy metal chelating agent sedimentation sand removal slag removal → primary filtration to obtain sewage A and filtered water B containing large particles of dirt. Sewage A undergoes traditional biochemical treatment and then settles and removes mud to obtain filtered Water C and sludge; sludge for sludge treatment;

[0045] Filtered water B is finely filtered to obtain filtered water D and reclaimed water;

[0046] Reclaimed water leaves the factory directly; filtered water D and filtered water C are combined, disinfected with calcium hypochlorite, and shipped as agricultural water;

[0047] Among them, sand filtration equipment and microfiltration equipment are used for primary filtration, and the pore size of microfiltration is 0.1 micron; cross-flow filtration is used for primary filtration; hollow fiber ultrafiltration membrane...

Embodiment 3

[0053] A kind of concrete steps of the treatment method of urban sewage are as follows:

[0054] Sewage enters the plant → screen slag removal → heavy metal chelating agent sedimentation sand removal slag removal → primary filtration to obtain sewage A and filtered water B containing large particles of dirt. Sewage A undergoes traditional biochemical treatment and then settles and removes mud to obtain filtered Water C and sludge; sludge for sludge treatment;

[0055] Filtered water B is finely filtered to obtain filtered water D and reclaimed water;

[0056] Reclaimed water leaves the factory directly; filtered water D and filtered water C are combined, disinfected with calcium hypochlorite, and shipped as agricultural water;

[0057] Among them, sand filtration equipment and microfiltration equipment are used for primary filtration, and the pore size of microfiltration is 0.1 micron; cross-flow filtration is used for primary filtration; hollow fiber ultrafiltration membrane...

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PUM

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Abstract

The invention discloses an urban sewage treatment method. After being subjected to grid deslagging, heavy metal removal, sand removal and slag removal, sewage is shunted through primary filtration to form two parts, wherein one part is sewage containing large-particle pollutants, and sludge and filtered water to be treated are obtained after the sewage is subjected to biochemical treatment and sedimentation treatment; and the other part is shunted to form filtered water to be treated and reclaimed water after being precisely filtered. The reclaimed water directly leaves factory, and the two kinds of filtered water are used as agricultural water leaving factory after being sterilized simultaneously. By using the urban sewage treatment method, the utilization ratio of sewage is increased, the utilization ratio of sewage is up to more than 98%, and economic and social benefits are remarkable.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a treatment method for urban sewage. Background technique [0002] The importance of urban sewage treatment is self-evident. If you look at the "Urban Drainage and Sewage Treatment Regulations", you will know the government's attitude towards sewage treatment. [0003] How to use urban sewage after treatment is of great importance. It is related to the processing cost and the social benefits obtained. [0004] The traditional sewage treatment process is mainly based on biological methods. The operating cost is low, and the pollution problem is mainly solved, not to mention utilization. However, the old technology uses a large amount of land, which is not suitable for the current development of the city. Now that the city is developing rapidly, the population is increasing, and the land is scarce, it is not suitable to use the old technology to expand the sewage pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F9/14
Inventor 孙源
Owner 孙源
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