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Distributed domestic sewage treatment method

A technology for domestic sewage and treatment methods, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of management difficulty and the ineffectiveness of worm bed insulation in winter, etc.

Inactive Publication Date: 2010-12-29
ENERGY RES INST OF JIANGXI ACAD OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to manage the water distribution and alternate operation of the earthworm ecological filter, as well as the post-disposal of eliminated earthworms, cleaning of the filter bed, and insulation of the earthworm bed in winter.

Method used

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  • Distributed domestic sewage treatment method

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Embodiment Construction

[0024] The embodiment of the present invention treats 10-20m of domestic sewage in one day 3 / d is implemented in the system. The domestic sewage treatment system in this embodiment is composed of anaerobic pond, regulating pond, biological trickling filter tower, artificial wetland and so on.

[0025] The effective volume 36m of present embodiment anaerobic pond 3 , the hydraulic retention time is 18 hours; the effective volume of the regulating tank is 24m 3 , The hydraulic retention time is 12 hours. The anaerobic tank and the regulating tank are a combined structure. They are installed underground with built-in fillers. The volume load of the biological trickling filter tower is 0.30kgBOD 5 / m 3 d, surface hydraulic load 30m 3 / m 2 d. The height of the biological trickling filter tower is 4m, and it is divided into 2 layers. Each layer is covered with ceramic fillers, and there are holes between the layers for oxygen flow. Hydraulic load of constructed wetland: 500m...

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Abstract

The invention discloses a distributed domestic sewage treatment method. The method combines process units of anaerobic, jet oxygenation, biological oxidation, artificial wetland and the like together to perform anaerobic, aerobic and wetland ecological three-stage treatment on the domestic sewage so as to effectively reduce CODcr and BOD5 of the domestic sewage; and dephosphorization and denitrification are performed, and the effluent is stable and reaches the standards before emitting. A jet oxygenation pulse water distributor is adopted in the jet oxygenation, and the jet oxygenation pulse water distributor oxygenates the anaerobic effluent and provides pre-oxygenation treatment for a subsequent aerobic process; the biological oxidation is performed in a trickling filtration tower which is designed with 2 to 3 layers and provided with vent holes, a ceramic filler is placed in the trickling filtration tower, and the trickling filtration tower distributes water by adopting time control pulse so that the re-oxygenation effect of the trickling filtration tower can be improved and no power is consumed; and the artificial wetland is designed in an undercurrent form, proper fillers such as coal cinder, plaster, gravels and the like are placed in the artificial wetland, and pollutants can be further degraded and removed from the wetland environment. The method is suitable for standard-reaching treatment of rural or urban distributed domestic sewage.

Description

technical field [0001] The invention relates to an anaerobic / jet flow oxygenation biological oxidation / constructed wetland combined sewage dephosphorization and nitrogen removal process for treating domestic sewage, and belongs to the technical field of environmental protection water treatment. Background technique [0002] With the development of the national economy, my country's water environment pollution is increasing, and the problem of domestic sewage pollution in rural areas is also becoming more and more serious. From the experience and lessons learned in the pollution treatment process of Taihu Lake and Dianchi Lake, it is not enough to only pay attention to the treatment of urban domestic wastewater and industrial wastewater. improvement and protection. [0003] Traditional decentralized sewage treatment processes include: septic tanks, biogas digesters, oxidation ponds, land treatment, integrated oxidation ditch, etc. In recent years, there are also biochemical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/30C02F3/32C02F3/34
CPCY02W10/10
Inventor 王顺发熊兵李浩熊继海田先锋吴永明
Owner ENERGY RES INST OF JIANGXI ACAD OF SCI
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