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Novel sewage treatment technology

A sewage treatment and sewage technology, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. problems such as large energy consumption, to achieve the effect of saving workload, saving energy, and reducing infrastructure costs

Inactive Publication Date: 2012-05-30
天津市庆安环境检测有限公司
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Problems solved by technology

[0002] Most of the existing urban sewage treatment adopts the following process: first, the sewage passes through the coarse grid, to the sump, and then is lifted to the grit chamber, then to the sedimentation tank, and then the treated sewage is discharged through the aeration tank and the sedimentation tank. This treatment is called secondary treatment. For further treatment, pumps can be used to lift the water before discharge, and the water quality for reclaimed water can be obtained through the filter tank, but an intermediate pool, lifting pump room, clear water pool, and backwash pump are required. house, the secondary treatment cannot meet the quality standard of reclaimed water, and if further treatment is required, the process is complicated, the investment is large, the energy consumption is large, and the cost is high

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  • Novel sewage treatment technology

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Embodiment 1

[0023] Sewage (COD400mg / L, BOD200mg / L, SS250mg / L) passes through the coarse grille 1, the gap of the coarse grille is about 20 mm, and removes large debris to protect the normal operation of the lift pump, and the sewage enters the sump 2 , use a submersible pump to lift the sewage 3, the sewage enters the fine grid 4, the gap of the fine grid is about 1 mm, and removes small sundries (removal of COD15-20%); it can basically replace the bulky primary sedimentation. Sewage enters grit chamber 5, COD350 mg / L, BOD185 mg / L, SS150 mg / L. The sewage after grit settling enters the hydrolysis tank 6. The hydrolysis tank is an empty structure without filler, agitator and phase separator. There are only pipelines for sending sewage. Sludge bed, the sewage (contained in the hydrolyzed bacteria sludge itself) is controlled at a speed of 1-2 m / m in the hydrolysis tank, and the water stays in the hydrolysis tank for about 2-4 hours. The sewage can remove fine suspended matter through the hyd...

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Abstract

The invention relates to a novel sewage treatment technology, which comprises the procedures of: passing a thick grid, entering a collecting basin, conducting lifting, passing a fine grid, entering a grit chamber, entering a hydrolysis basin, entering an anoxic and aerobic aeration basin, entering a sedimentation basin, and entering a filter basin. The technology of the invention has the advantages of reasonable design, low energy consumption, and low capital construction cost. About 0.2-0.35KWH of electricity is needed for treating 1M<3> of sewage, the amount of sludge needing dehydration is only half of that of a routine technology, and the total cost for treating every M<3> of sewage is 0.2-0.4 RMB yuan (excluding equipment depreciation). For a treatment plant with a treatment scale of 20,000M<3> / day, an investment cost of about 500-600 RMB yuan is needed for treating 1M<3> / day of sewage. The sewage treated by the technology of the invention can reach or even exceed the intermediate water quality standard of Beijing municipality.

Description

technical field [0001] The invention relates to a novel sewage treatment process, in particular to a treatment process in which the water quality of sewage treatment reaches the quality standard of reclaimed water, so as to realize the resource utilization of sewage. Background technique [0002] Most of the existing urban sewage treatment adopts the following process: first, the sewage passes through the coarse grid, to the sump, and then is lifted to the grit chamber, then to the sedimentation tank, and then the treated sewage is discharged through the aeration tank and the sedimentation tank. This treatment is called secondary treatment. For further treatment, pumps can be used to lift the water before discharge, and the water quality for reclaimed water can be obtained through the filter tank, but an intermediate pool, lifting pump room, clear water pool, and backwash pump are required. Houses, the secondary treatment cannot meet the quality standard of reclaimed water, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F11/12
Inventor 王国锋杨宗政
Owner 天津市庆安环境检测有限公司
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