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Device and method for removing pollutants in rural domestic sewage

A technology for domestic sewage and pollutants, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., to achieve low investment, improve treatment efficiency, and occupy a small area

Active Publication Date: 2015-02-18
TAIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The above-mentioned rural domestic sewage treatment processes basically meet the requirements of stable technical performance, good treatment effect, low investment, less land occupation, simple operation, convenient management, long service life, and convenient maintenance, etc., but the effluent quality can only meet the national standard level standard

Method used

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  • Device and method for removing pollutants in rural domestic sewage
  • Device and method for removing pollutants in rural domestic sewage

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Experimental program
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Effect test

Embodiment 1

[0038]The above-mentioned device for removing pollutants in rural domestic sewage is used to treat domestic sewage generated in a village. The production volume of domestic sewage is 50 tons per day, and the treatment is required to meet the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB 18918-2002) It is discharged into the surrounding water body after meeting the first-level A standard.

[0039] The domestic sewage first enters the three-compartment septic tank 1, and the domestic sewage is treated by the three-stage septic tank 1, and then passes through the filter screen 2 to intercept large suspended particle pollutants, and then enters the anaerobic suspended packing bed reaction tank 3 for pretreatment;

[0040] The anaerobic suspended packing bed reaction tank 3 adopts an upflow structure, the suspended packing adopts porous spherical packing, and the hydraulic retention time of the anaerobic suspended packing bed is controlled at 5h;

[0041] Th...

Embodiment 2

[0046] The production of domestic sewage in a certain village is 150 tons per day. The domestic sewage first enters the three-compartment septic tank 1, and after being treated in the three-compartment septic tank 1, the domestic sewage passes through the filter screen 2 to intercept large suspended particle pollutants, and then enters the exhaust Oxygen suspended packed bed reaction tank 3 is pretreated;

[0047] The anaerobic suspended packing bed reaction tank 3 adopts an upflow structure, the suspended packing adopts porous spherical packing, and the hydraulic retention time of the anaerobic suspended packing bed is controlled to 5.5h;

[0048] The effluent from the anaerobic suspended packed bed reaction tank 3 enters the hypoxic aeration tank 4 for biochemical reaction to further remove organic matter in the sewage. The hydraulic retention time of oxygen aeration tank 4 is 2.5h;

[0049] The effluent from the hypoxic aeration tank 4 enters the vertical flow sedimentatio...

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Abstract

The invention discloses a device for removing pollutants in rural domestic sewage. The device comprises a three-grid septic tank, a filter screen, an anaerobic suspended packed bed reaction tank, a hypoxic aeration tank, a vertical flow sedimentation tank, an artificial aquatic plant bed and a phosphorus absorbing tank which are sequentially communicated; and the three-grid septic tank, the filter screen, the anaerobic suspended packed bed reaction tank, the hypoxic aeration tank and the vertical flow sedimentation tank are arranged on the upper part side by side, while the artificial aquatic plant bed and the phosphorus absorbing tank are arranged on the lower part side by side; and a water distribution gallery is additionally arranged between the water outlet of the vertical flow sedimentation tank and the water inlet of the artificial aquatic plant bed. The device disclosed by the invention is quite high in rural domestic sewage treatment efficiency, and effluent quality can reach class-A standard in Pollution Discharge Standard for Municipal Sewage Treatment Plant (GB18918-2002); and meanwhile, the device is small in occupied area, low in investment, simple in operation, management and maintenance, and low in operation and maintenance expenses.

Description

technical field [0001] The invention relates to a device and method for removing pollutants, in particular to a device and method for removing pollutants such as carbon, nitrogen and phosphorus in rural domestic sewage, and belongs to the technical field of sewage treatment. Background technique [0002] Rural domestic sewage mainly comes from the sewage discharged during the daily life of residents (kitchen, bathing, laundry, etc.), which contains a large amount of oil, microorganisms, sundries, high nitrogen and phosphorus content, relatively stable water quality, and good biodegradability Features, the general population size of 4000-6000 rural urban sewage production is about 500 tons per day and the difference between the peak and valley of sewage discharge is obvious. [0003] There are a total of 634,000 administrative villages in my country. At present, a large amount of domestic sewage is directly discharged in the rural areas of the country every year. According t...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 蒋胜韬白书立王三秀管玉江祝建中
Owner TAIZHOU UNIV
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