Method for treating sewage by constructing artificial wetland with vetiver grass

A technology of artificial wetlands and vetiver grass, applied in sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of rust and corrosion, high cost

Inactive Publication Date: 2013-03-27
河南省中州环境保护工程集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing methods for treating sewage in constructed wetlands still have many defects. For example, the document of Patent No. ZL200610052475.0 discloses a method for treating sewage in constructed wetlands. Porous iron clapboard submerged artificial wetland and sump, but because it needs to build multiple wetlands, lay pipes, weld iron clapboard, the cost is high, and the porous iron clapboard in the matrix is ​​easy to rust and rot in sewage

Method used

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Embodiment Construction

[0010] A kind of construction artificial wetland treatment domestic sewage with vetiver, concrete steps are as follows:

[0011] 1. Seedling cultivation: Cultivate vetiver seedlings in the nursery in the first year;

[0012] 2. Construct wetlands: Construct surface-flow artificial wetlands, such as villages with a population of 250-300, whose dimensions are 25m×6.5m×2m. The wall adopts the brick structure with cement plaster, and the bottom can be made of concrete structure. The bottom of the wetland is paved with broken bricks in sequence, and the coal gangue, gravel, cinder, and sand are used as the composite matrix. The vetiver cultivated in one year should pay attention to watering when planting to ensure the survival of the seedlings. After 3 months, the vetiver has grown to 1m~1.8m, and the clean water is introduced into the wetland, and the depth of water is 10cm to immerse the root of the vetiver. ;

[0013] 3. Sewage diversion: One month after introducing purified w...

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Abstract

The invention discloses a method for treating sewage by constructing an artificial wetland with vetiver grass, comprising the following specific steps: a, growing seedlings; b, constructing a wetland; and c, guiding the sewage. The bed wall and the bottom of the wetland constructed by the method disclosed by the invention are waterproof structures for preventing the sewage from leaking to pollute the underground water. Gangue, brick bats, coal cinder and gravel are used on the wetland bed as compound matrix to fill the wetland; the compound matrix is capable of adsorbing, filtering and stopping suspended solids in the sewage; the vetiver grass is planted at the row spacing of 40 cm*40 cm, so that enough space is remained for the vetiver grass to tiller and grow; and the vetiver grass may not grow sparsely. After the artificial wetland is constructed by the method disclosed by the invention, the removal effect on SS (Suspended Solids), TN (Total Nitrogen), COD (Chemical Oxygen Diode) and BOD (Biological Oxygen Diode) in domestic sewage is good, and the quality of the yielding water is up to the national drainage standard.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment methods, in particular to a method for constructing artificial wetlands with vetiver to treat sewage. Background technique [0002] At present, the current status of sewage treatment in my country is not optimistic. Some domestic sewage and industrial wastewater are treated by existing sewage treatment equipment, and there are problems such as substandard treatment, high cost, and hidden dangers. Although some sewage treatment agents have treated sewage, they have polluted the soil; wastewater treated with microorganisms has also brought many potential hazards to us humans due to the rapid mutation of microorganisms. Constructed wetland system water purification technology is a new type of ecological sewage purification treatment method, which is economical and environmentally friendly. Its basic principle is to plant specific wetland plants on the constructed wetland filler to establish ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 聂天南聂雨舟王长宇朱啸世李玉英韩雪梅陈吉宝孙大金秦中民白华民
Owner 河南省中州环境保护工程集团有限公司
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