Method and installation for treating domestic sewage by using artificial wetland

A domestic sewage and artificial wetland technology, applied in the direction of sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve problems such as insufficient denitrification and poor nitrification

Inactive Publication Date: 2006-12-06
NANJING UNIV
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0009] The purpose of the present invention is to provide a method and device for treating domestic sewage using constructed wetlands in view of the problems of poor nitrification or insufficient denitrification in existing single-mode constructed wetlands for domestic sewage treatment

Method used

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  • Method and installation for treating domestic sewage by using artificial wetland
  • Method and installation for treating domestic sewage by using artificial wetland
  • Method and installation for treating domestic sewage by using artificial wetland

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Embodiment Construction

[0039] The following structural drawings and embodiments further illustrate the present invention.

[0040] The technological process of this embodiment is as figure 1 shown.

[0041] A method for treating domestic sewage by utilizing artificial wetlands, comprising the following steps:

[0042] Firstly, the domestic sewage is pretreated through the grid and the sedimentation tank to remove the floating and settleable suspended matter;

[0043] Then the pretreated domestic sewage is introduced into the first-stage compound vertical flow artificial wetland, and it passes through the water distribution and odor-proof layer with emergent plants planted on the surface on the side of the vertical partition and the downflow composed of the bluestone treatment area. Area, through the channel at the lower part of the vertical partition, enter the upstream area composed of the coarse sand powder treatment area and the free water body area on the other side of the vertical partition, ...

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Abstract

This invention relates to a combined vertical flow-vertical deflection wet land treatment technique for domestic wastewater. The technique comprises a pretreatment system and an artificial wet land system. The pretreatment system is mainly aim to removing the floating matters and precipitable suspended matters in domestic wastewater. The artificial wet land system is composed of combined vertical flow-vertical deflection in series. The invention has high removing rate on COD, N and P in domestic wastewater.

Description

technical field [0001] The invention relates to a method and a device for treating domestic sewage, in particular to a method and a device for treating domestic sewage by utilizing artificial wetlands. Background technique [0002] Constructed wetland is a new type of wastewater treatment process developed in the 1970s and 1980s. Because of its advantages of high efficiency, low investment, low operating cost, low maintenance technology, and good removal effect on nitrogen and phosphorus, it is widely used in the world It has been more and more widely used in the range. [0003] Generally speaking, constructed wetlands are mainly composed of artificial substrates, aquatic plants and microorganisms. In the constructed wetland system, the pollutants are mainly through the physical, chemical and biological triple coordination of the filler-microbe-plant composite ecosystem, and the efficient treatment of wastewater is achieved through filtration, adsorption, precipitation, ion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 郑正帖靖玺李培培周培国钟云彭晓成罗兴章王艳锦李继红李军状孟卓
Owner NANJING UNIV
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