Contact Oxidation-Constructed Wetland Rural Domestic Sewage Combined Treatment System

A technology for artificial wetlands and domestic sewage, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., to achieve the effects of high removal rate, small footprint and strong pretreatment ability

Active Publication Date: 2015-08-12
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE +1
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  • Abstract
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  • Claims
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Problems solved by technology

At present, there is still a lack of decentralized rural domestic sewage treatment in China.

Method used

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  • Contact Oxidation-Constructed Wetland Rural Domestic Sewage Combined Treatment System

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specific example

[0019] A specific example of the present invention is as follows:

[0020] Number of fine grids: 1 seat, 3 channels (2 for use and 1 for backup). The flow rate of each fine grid: Q=1250m 3 / h. The size of each channel: 7.5m×1.35m, 1.5m deep.

[0021] Number of aeration grit chambers: 1, divided into 2 grids Single tank design flow rate: Q=1250m 3 / h Plane size of single cell pool: 10m×1.8m, depth 1.5m, depth of sand bucket: 0.5m.

[0022] The contact oxidation pretreatment tank is a reinforced concrete structure, quantity: 1 seat is divided into 5 grids, hydraulic retention time: 1.0h, design flow rate: Q=417m 3 / h, single cell plane size: 6.0m×6.0m, depth 5.0m (effective water depth 4.5m).

[0023] Advection sedimentation tank type: reinforced concrete structure; quantity: 1 seat, divided into 2 grids and design flow rate of each grid: Q=417m3 / h. Single grid plane size: 22.0m×7.7m, 4.5m deep (effective water depth 3.5m, buffer layer 0.5m).

[0024] Constructed wetland ...

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Abstract

A contact oxidation-artificial wetland rural domestic sewage combination treatment system mainly comprises a fine grid, effluent of the fine grid is connected with an aerated grit tank, effluent of the aerated grit tank is connected with a biological contact oxidation pretreatment tank, effluent of the biological contact oxidation pretreatment tank is connected with a horizontal flow sedimentation tank, and effluent of the horizontal flow sedimentation tank is connected with an artificial wetland tank. The contact oxidation-artificial wetland rural domestic sewage combination treatment system has the advantages of high ammonia nitrogen conversion efficiency and strong artificial wetland denitrification ability, is high in removal rate of organic matters and nitrogen, and the pre-positioned preprocessing system is high removal rate of SS (suspended solids), artificial wetland covers a small area, and the system is long in service life.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a combined treatment system for contact oxidation-artificial wetland rural domestic sewage. Background technique [0002] Rural areas across the country produce more than 8 billion tons of domestic sewage every year, and 96% of villages do not have drainage channels and sewage treatment systems. The random discharge of domestic sewage has seriously polluted the rural ecological environment and directly threatened the health of the broad masses of farmers and the economic development of the countryside. On the one hand, untreated domestic sewage flows into surface water bodies such as low-lying rivers, lakes and ponds, seriously polluting various water sources; on the other hand, domestic sewage is also the source of disease transmission, which is likely to cause infectious diseases, Occurrence and prevalence of endemic and zoonotic diseases. At present, the penetrati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 袁冬海何连生李俊奇崔骏
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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