Water treatment technology of inclined plane undercurrent artificial wetland

A constructed wetland and water treatment technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc. Problems such as small space and single form achieve the effect of rich landscape

Inactive Publication Date: 2010-05-19
TONGJI UNIV
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Problems solved by technology

The downside is that the operating conditions of tidal reciprocating flow increase wetland control requirements
However, the planes of cons...

Method used

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  • Water treatment technology of inclined plane undercurrent artificial wetland
  • Water treatment technology of inclined plane undercurrent artificial wetland
  • Water treatment technology of inclined plane undercurrent artificial wetland

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Embodiment 1

[0030] Example 1: The inclined surface subsurface flow artificial wetland treatment process is used for the treatment of domestic sewage in a certain village. The drainage from the village's septic tanks and kitchens is collected and transported to a river in the village through pipelines, and then flows into the inclined subsurface artificial wetland through the folded plate sedimentation tank, and finally discharged into the river. The designed average daily treatment scale of slope subsurface flow constructed wetland is 8m 3 / d. The river slope is about 4.5m wide, and the slope ratio is about 1:5. Use the slope of the river to construct a slope artificial wetland. The horizontal projection size of the slope constructed wetland is 10.5×3.8=40m 2 , the inclination angle θ=11 degrees, the design hydraulic load is 0.2m 3 / m 2.d. Brick retaining walls are used around the wetland, the original soil is rammed and the anti-seepage membrane is laid, and then the matrix and pip...

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Abstract

The invention belongs to the technical field of environmental protection, in particular to a water treatment technology of inclined plane undercurrent artificial wetland which is composed of water inlet pipe, a vent pipe, a water collecting pipe, an impermeable membrane, a substrate layer and plants; the wetland cross section is a quadrangle which is divided into a nitrification region and a denitrification region; the water to be treated is correspondingly divided into two spouts to enter into the two regions. The flooding water in the nitrification region enters into the denitrification region after nitrification is finished, is mixed with the flooding water in the denitrification region, and utilizes middle carbon source for denitrification, thus realzing the removal of NH4+/-N and TN. The water treatment technology of the invention is characterized in that nitrification and denitrification reaction are carried out in the same wetland; the nitrogen degassing rate of the single-stage wetland is improved by over 50%; water flows depends on gravity in the purification process; power and operational maintenance are not needed in the treatment process; and the surface of the wetland can be designed into different slopes according to construction of the river channel side slope and mountain land slope and different landscape requirements, thus enriching the landscape of the wetland.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a water treatment process of an inclined surface subsurface flow constructed wetland. Background technique [0002] Constructed wetlands, as an ecological water treatment technology, are widely recognized around the world. Taking the UK as an example, it has built more than 1,000 constructed wetlands in the past 20 years. Since the "Tenth Five-Year Plan", constructed wetlands have gradually become a new research hotspot in the field of environmental protection technology in my country, and have begun to be applied on a large scale in some rural and remote communities. Practice has proved that constructed wetlands have the advantages of low operating costs, suitable for farmers' management, easy integration into the rural environment, decentralized and small-scale construction, and are very suitable for sewage treatment in rural or remote communities....

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/30
CPCY02W10/10
Inventor 王晟徐祖信李怀正金伟王欣然
Owner TONGJI UNIV
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