Water treatment technology of inclined plane undercurrent artificial wetland

A technology for constructed wetlands and water treatment, applied in biological water/sewage treatment, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc. It can solve the tidal reciprocating flow operating conditions and increase wetland control requirements, with a single form , there is not much space to play, etc., to achieve the effect of rich landscape

Inactive Publication Date: 2011-04-13
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The downside is that the operating conditions of tidal reciprocating flow increase wetland control requirements
However, the planes of constructed wetlands that have been reported are all designed horizontally, with a single form, and there is not much room for landscape development.

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

Examples

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Embodiment 1

[0030] Example 1: The treatment process of the inclined surface underflow constructed wetland is used for the treatment of domestic sewage in a certain village. The septic tank drainage and kitchen drainage of the village are collected and transported to a riverside of the village through pipelines, and flow into the inclined surface underflow constructed wetland through the folded plate sedimentation tank, and finally discharged into the river. The designed average daily treatment scale of the inclined surface 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 river slopes to construct inclined artificial wetlands. The horizontal projection size of the inclined 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 tamped and then an impermeable membrane is laid, and t...

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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 wetlandcan 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 specifically relates to a water treatment process for an inclined surface underflow constructed wetland. Background technique [0002] As an ecological water treatment technology, constructed wetland has been widely recognized worldwide. Take the United Kingdom as an example, it has built more than 1,000 artificial 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 larger scale in some rural areas and remote communities. Practice has proved that constructed wetlands have the advantages of low operating costs, suitable for farmer management, easy integration into the rural environment, decentralized and miniaturized construction, and are very suitable for sewage treatment in rural or remote communities, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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