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Nutrient-rich river-lake water body and initial rainwater composite artificial wet land treating system

A technology of eutrophication and initial rainwater, applied in the field of environmental engineering, can solve the problems of poor growth of rainwater plants, low nutrient removal efficiency, and rainwater pollution, and achieve low organic matter content, prevent plants from drying out, and high landscape value Effect

Inactive Publication Date: 2007-03-28
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to purify the pollution of eutrophic rivers and lakes and the pollution of initial rainwater, and develop a composite artificial wetland treatment system for eutrophic rivers, lakes and initial rainwater, so as to solve the problem of easy blockage of ordinary artificial wetlands. To deal with the problems of poor growth of rainwater plants in the early stage and the low removal efficiency of nutrients such as nitrogen and phosphorus in free surface flow constructed wetlands, while considering the ease of operation and landscape requirements of constructed wetlands

Method used

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  • Nutrient-rich river-lake water body and initial rainwater composite artificial wet land treating system
  • Nutrient-rich river-lake water body and initial rainwater composite artificial wet land treating system
  • Nutrient-rich river-lake water body and initial rainwater composite artificial wet land treating system

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Embodiment

[0035] According to a specific example of the present invention, the eutrophic river, lake water body and early rainwater composite artificial wetland treatment system is built at the lakeside, and the polluted lake water is lifted by a submersible pump, and enters the front end of the plant-gravel filtration and sedimentation unit 1 through a pipeline. Incipient rainwater can be fed into the unit through another pipe, and the process of its inflow is controlled by a valve.

[0036] Plant-gravel filtration and sedimentation unit: the pool body is a cuboid brick-concrete structure and is impermeable with clay. The dimensions of length, width, and height are: 20m×1.5m×0.8m. The pool is filled with 40cm of soil, and cattails are planted in the pool. The effective water depth of the pool body It can be adjusted between 10-40cm. There is a gravel filter dam with a thickness of about 50cm and the same height as the pool body at the 7m and 14m of the pool, and the gravel particle siz...

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PUM

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Abstract

The invention provides a combined artificial marsh treating system for eutrophic river and lake water bodies and early rain water, comprising double-channel water inlet unit, plant-gravel filtering and settling unit and horizontal undercurrent strengthening treating unit, connected in series. And the eutrophic river and lake water bodies and early rain water are collected through the double-channel water inlet unit into the plant-gravel filtering and settling unit, then flow through the horizontal undercurrent strengthening treating unit and finally are discharged, thus able to prevent plants withering by no early rain water, effectively removing suspened matters, low-cost, having good anti- seepage effect, and durable. And reeds, bulrushes, fleur and other water plants are planted in the treating units, having high pollutant removing efficiency and very good landscape effect.

Description

technical field [0001] The invention relates to a sewage treatment system, in particular to a combined artificial wetland treatment system for polluted eutrophic rivers and lakes and initial rainwater, and belongs to the technical field of environmental engineering. Background technique [0002] Constructed Wetlands (CWs) is a new type of sewage treatment technology developed in the past 20 years, and has received more and more attention in recent years. [0003] Compared with traditional sewage treatment methods (activated sludge method and stabilization pond method, etc.), constructed wetland has a better treatment effect (it has a good effect on BOD 5 (5-day biochemical oxygen demand) removal rate can reach 85% to 95%, COD (chemical oxygen demand) removal rate can reach more than 80%, and the BOD in the treated water 5 Less than 10mg / L, SS (suspended solids) less than 20mg / L), strong nitrogen and phosphorus removal ability, the removal rates of TN (total nitrogen) and TP...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/10
CPCY02W10/10
Inventor 年跃刚聂志丹
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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