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Method for slope protecting natural simulating ecological constitution and taking account of surface source pollution control

A technology that imitates nature and is ecological. It is applied in the fields of hard slope protection and natural ecological transformation. It can solve problems such as affecting the survival of wild species, affecting the effect of pollutant removal, and difficulty in the growth of aquatic organisms, and achieves good landscape effects and operating costs. Inexpensive, anti-slip and shift effect

Inactive Publication Date: 2007-06-06
国家环境保护总局华南环境科学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The main ecological impacts of river slope protection, especially hard slope protection, are as follows: ①In rivers repaired with cement stones, it is very difficult for aquatic organisms with water purification function to grow, the self-purification ability of the river will be greatly reduced, and the water quality may deteriorate; ②It will lead to The river water is affected by sunlight and the water temperature changes too much, which is not conducive to maintaining the ecological balance in the water, especially in high temperature seasons, which is easy to breed infectious diseases; ③ With the increase of water flow velocity, some organisms in the water will be washed away by the water flow, reducing the number of aquatic organisms , and the lack of natural plants on the shore directly affects the survival of wild species along the river, such as water birds
④Urban non-point source pollution directly enters the river water along with the hard slope protection, resulting in aggravated pollution of the river water
However, in the ecological transformation of hard slope protection of river channels, it is rarely considered in conjunction with non-point source pollution control
[0005] Judging from the current research and practice progress of ecological slope protection technology, the following problems still exist and need to be solved: (1) ecological slope protection is rarely related to the concept of non-point source pollution control, but mainly lies in the ecological restoration function; (2) due to the ecological slope protection The width is small, and the residence time of the surface source is short, which affects the removal effect of pollutants; (3) the development of high-efficiency ecological slope protection materials or technological innovation; (4) From the perspective of application, the ecological transformation of hard slope protection in developed countries It has been widely used and achieved good environmental, economic and social benefits, but our country is still in the research stage of application in some areas, and related technologies still need to be further improved
It does not involve the ecologicalization of the area of ​​slope protection by river dykes, and then the method of treating and controlling non-point source pollution

Method used

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  • Method for slope protecting natural simulating ecological constitution and taking account of surface source pollution control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Rainfall runoff non-point source control

[0031] The location of the demonstration project is located in the section of the ancient canal in Zhenjiang City, Jiangsu Province. In 2006, the demonstration project section of this technology was monitored during the rainfall period, and the influent and effluent water of the demonstration project were collected respectively. It was found that the application of this technology can better control the inflow The non-point source pollutants of the river course, among which the indicators of the influent of the demonstration project are: COD 60mg / L, TN 5.2mg / L, TP 3.7mg / L, NH 3 -N 3.8mg. / L, SS 121mg / L, indicators of effluent are COD45mg / L, TN 2.4mg / L, TP 2.2mg / L, NH 3 -N 1.8mg. / L, SS 68mg / L, the removal rate of COD 25%, TN 54%, TP 41%, NH 3 -N 53%, SS 44%.

Embodiment 2

[0032] Example 2: Restoration of river water body

[0033] In order to further strengthen the monitoring of the non-point source control effect of this technology, submersible pumps are used to pump water from the ancient canal as influent water, and the area of ​​the selected demonstration project is 12m 2 , the inflow flow is 20m 3 / h, among which the pollution indicators of influent water are COD 14.2mg / L, TN 3.2mg / L, TP 2.8mg / L, NH 3 -N 1.5mg / L, SS 35.7mg / L, effluent indicators respectively reach COD 10.4mg / L, TN 2.1mg / L, TP 1.2mg / L, NH 3 -N 0.9mg / L, SS 24.2mg / L, the removal rates of COD 27%, TN 34%, TP 57%, NH 3 -N 40%, SS 32%

[0034] Note: COD means chemical oxygen demand in water

[0035] TN stands for total nitrogen in water

[0036] TP means total phosphorus in water body

[0037] SS means total suspended solids in water

[0038] NH 3 -N means ammonia nitrogen in water

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Abstract

The present invention relates to a method for constructing artificial natural ecologic revetment with the functions of raising revetment stability and controlling area-source pollution. Said method includes the following steps: (1), in the revetment top position close to vertical retaining wall constructing ecological filter broken stone channel and using it as pretreatment equipment for making area-source pollution control; (2), on the hard revetment laying matrix crushed gravel layer whose thickness is 40 plus or minus 20 cm; (3), laying and fixing fiber web or plant fiber web on the matrix crushed gravel layer and (4) on the plant fiber web area spreading and sowing herbaceous plant seeds and making cultivation.

Description

technical field [0001] The invention relates to a river course slope protection, in particular to a method for imitating natural ecological transformation of a hard slope protection taking into account surface source control. Background technique [0002] The main ecological impacts of river slope protection, especially hard slope protection, are as follows: ①In rivers repaired with cement stones, it is very difficult for aquatic organisms with water purification function to grow, the self-purification ability of the river will be greatly reduced, and the water quality may deteriorate; ②It will lead to The river water is affected by sunlight and the water temperature changes too much, which is not conducive to maintaining the ecological balance in the water, especially in high temperature seasons, which is easy to breed infectious diseases; ③ With the increase of water flow velocity, some organisms in the water will be washed away by the water flow, reducing the number of aqu...

Claims

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Application Information

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IPC IPC(8): E02B3/04E02B3/12E02D17/20A01G7/00
Inventor 杨扬易新贵方晓航林学瑞
Owner 国家环境保护总局华南环境科学研究所
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