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Technology for distributed treatment on domestic sewage from small rural towns

A domestic sewage and treatment process technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, magnetic field/electric field water/sewage treatment, etc., can solve secondary pollution that is easy to block, poor treatment effect, High technical requirements and other issues, to achieve the effect of flexibly responding to changes in processing load, small footprint, and short process flow

Inactive Publication Date: 2013-04-03
SCIMEE TECH & SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the solutions cannot be popularized and used in rural areas due to poor treatment effects, high technical requirements, large investment, large floor area, easy blockage, and secondary pollution.
Rural sewage has not been effectively treated, which is one of the main reasons for the continuous deterioration of my country's water environment

Method used

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  • Technology for distributed treatment on domestic sewage from small rural towns
  • Technology for distributed treatment on domestic sewage from small rural towns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The treatment object is typical rural domestic sewage, COD 400mg / L, BOD 5 160mg / L, TP 5mg / L, SS 220mg / L. In the first stage, the sewage passes through the grille and the regulating tank, mainly to remove the suspended solid pollutants (SS) in the sewage, and the sewage BOD after this stage treatment 5Remove about 30%; then the sewage overflows into the magnetic separation system, and its magnetic separator is a magnetic disk. After 3 minutes of hydraulic retention time, the effluent COD 140~150mg / L, SS 8~10mg / L, TP 0.1~0.5mg / L L. The purpose of the second stage is to substantially remove colloidal and dissolved organic pollutants (in the form of COD and BOD) in sewage 5 Mainly), this biological treatment unit is a falling water oxygenation contact oxidation tank, using the remaining head of the micro-sewage lifting pump to lift the sewage at one time to convert the potential energy into kinetic energy, and then fall in stages to form a water curtain and water droplets...

Embodiment 2

[0038] The treatment object is typical small town domestic sewage, COD 300mg / L, BOD 5 125mg / L, TP 4mg / L, SS 180mg / L. In the first stage, the sewage passes through the grille and the regulating tank, mainly to remove the suspended solid pollutants (SS) in the sewage, and the sewage BOD after this stage treatment 5 Remove about 30%; then the sewage overflows into the magnetic separation system, the magnetic separator is a disk, after 3.5 minutes of hydraulic retention time, the effluent COD 120~150mg / L, SS 8~10mg / L, TP0.1~0.5mg / L. The purpose of the second stage is to substantially remove colloidal and dissolved organic pollutants (in the form of COD and BOD) in sewage 5 Mainly), this ecological treatment unit is a constructed wetland. The insoluble organic matter in the sewage can be quickly intercepted through the precipitation and filtration of the wetland, and then used by microorganisms. The soluble organic matter in the sewage can be adsorbed and absorbed by the plant ...

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Abstract

The invention belongs to the field of sewage treatment and relates to a technology for distributed treatment on domestic sewage from small rural towns. The technology comprises that domestic sewage is treated orderly by a grid, a regulating tank, a magnetic separation device and a constructed wetland and then forms product water. The technology has the advantages of small floor space, short flow, convenient equipment operation, low operation cost, no secondary pollution and flexible treatment on a load change, and is suitable for being popularized in small rural towns of China.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a decentralized domestic sewage treatment process in small rural towns. Background technique [0002] my country has a total of 45,412 townships, 739,980 village committees, 236.927 million rural households, and a rural population of 919.6 million. According to estimates, the rural areas of the country produce more than 8 billion tons of domestic sewage every year, and the annual production of manure from livestock and poultry farming in the country is 2.5 to 3 billion tons, which is 2.45 times the amount of industrial solid waste. The vast majority of villages do not have drainage channels and sewage treatment systems, domestic sewage is discharged randomly, seriously polluting the living environment in rural areas, rivers, lakes and other water bodies in most rural areas are generally polluted, the safety of drinking water is seriously threatened, and directly endangers the heal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/48
Inventor 倪明亮易洋
Owner SCIMEE TECH & SCI CO LTD
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