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Integrated sewage treatment method

A treatment method and sewage technology, applied in water/sewage treatment, biological water/sewage treatment, flotation water/sewage treatment, etc., can solve the problem of failing to meet Class A discharge standards, difficult to achieve expected goals, and inability to efficiently remove and other problems, to achieve the effect of removing organic matter and suspended matter, easy unit modularization, and small footprint

Active Publication Date: 2020-06-05
GUANGZHOU BOFANG ENVIRONMENTAL PROTECTION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Magnetic separation technology, coagulation sedimentation and other technologies have shortcomings such as inability to efficiently remove nitrogen and phosphorus, unstable effluent, and inability to meet Class A discharge standards.
[0004] The composition of sewage is complex, and there are many indicators that need to be monitored. It is difficult to achieve the expected goal only by relying on one technology for sewage treatment. Therefore, it is often necessary to use several technologies in combination to achieve complementary advantages and improve the efficiency and effect of sewage treatment.

Method used

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Embodiment 1

[0031] The integrated treatment method of embodiment one sewage

[0032] An integrated treatment method for sewage, comprising the steps of:

[0033] 1) Pretreatment: The sewage is lifted to the pretreatment unit by the primary lift pump. The primary lift pump adopts a submersible sewage pump. The pretreatment unit includes a fine grid. The gap between the bars of the fine grid is 0.5-2mm, and the fine grid is Installed horizontally in the water channel, the sewage flows into the fine grille from the end of the fine grille, and then flows out from the grille gap;

[0034] 2) Physical and chemical treatment: the effluent of the pretreatment unit flows to the physical and chemical unit, and after adding polyaluminum chloride as a coagulant and polyacrylamide as a flocculant for treatment, a sedimentation tank is used to realize solid-liquid separation of sewage;

[0035] 3) Denitrification and aeration treatment: the effluent of the physical and chemical unit flows to the denit...

Embodiment 2

[0039] The integrated treatment method of embodiment two sewage

[0040] An integrated treatment method for sewage, comprising the steps of:

[0041] 1) Pretreatment: The sewage is lifted to the pretreatment unit by the first-stage lift pump. The first-stage lift pump adopts a self-priming pump. The pretreatment unit includes a fine grid, and the grid gap of the fine grid is 0.5-2mm. The water surface is horizontally installed in the water channel, and the sewage flows into the fine grille from the end of the fine grille, and then flows out from the gap of the grille;

[0042] 2) Physical and chemical treatment: the effluent of the pretreatment unit flows to the physical and chemical unit, and after adding aluminum sulfate as a coagulant and polyacrylamide as a flocculant for treatment, an air flotation machine is used to realize solid-liquid separation of sewage;

[0043] 3) Denitrification and aeration treatment: the effluent of the physical and chemical unit flows to the d...

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Abstract

The invention provides an integrated sewage treatment method. The integrated sewage treatment method comprises the following steps: pretreatment, physicochemical treatment, denitrification aeration treatment, aerobic aeration treatment, nitrification aeration treatment and enhanced filtration treatment. The invention belongs to the technical field of water environment pollution prevention and control. According to the invention, all processing units are organically combined, meanwhile, the dissolved oxygen of each biological aerated filter is controlled, and the components and the particle sizes of the filter materials are screened and optimized, while efficient nitrogen and phosphorus removal and organic matter and suspended matter removal are achieved, the effluent quality stably reachesthe first-class A emission standard and the surface water environment quality standard in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant GB18918-2002.

Description

technical field [0001] The invention belongs to the technical field of water environment pollution prevention and control, and in particular relates to an integrated sewage treatment method. Background technique [0002] With the rapid increase of population and rapid industrial growth, environmental pollution is increasing day by day. The "Water Ten Measures" issued in 2015 made the treatment of black and odorous water bodies an important content, and clearly stated that by 2020, the quality of the national water environment will be improved in stages, seriously polluted water bodies will be greatly reduced, and the level of drinking water safety will continue to improve. Groundwater overexploitation has been strictly controlled, and the trend of increasing groundwater pollution has been preliminarily curbed. According to the estimates of the E20 environmental platform, the national black and odorous water treatment market will reach about 400 billion yuan in 2020. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/00C02F1/001C02F1/24C02F1/5236C02F3/02C02F3/2806C02F3/30C02F3/34C02F9/00C02F2209/08C02F2209/16C02F2301/046
Inventor 黄尧冠马艳芳张立果李智强张秀春
Owner GUANGZHOU BOFANG ENVIRONMENTAL PROTECTION TECH
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