Method for river course slope protection by using composite stream constructed wetlands

Abstract

The invention relates to a method for river course slope protection by using composite stream constructed wetlands, comprising the following steps that: (a) grass planting ditches with V-shaped cross section are dug on a slope surface, and plants are planted in the grass planting ditches; (b) a composite stream constructed wetland in which fillers are provided is set at the water outlet of the grass planting ditch, and one or more plants selected from reeds, cattail, sedge, Sparganium, Juncus, canna, metasequoia, calamus, Scirpus tabernaemontani, arrowheads, Aponogetonaceae grass, Alternanthera sessilis, cress or sedge are planted on the fillers; (c) a water outlet pipe is arranged at one side of the composite stream constructed wetland adjacent to the river course so that water flowing from the composite stream constructed wetland is drained into the water course. The method for river course slope protection by using composite stream constructed wetlands has the advantages of good stability of slope protection to water courses, little damage to ecological environment keeping at both sides of rivers, capability of beautifying riparian landscape and adding biological diversity, low cost and favorable pollution interception and purification effects.

Description

technical field [0001] The invention relates to a method for river slope protection in the technical field of environmental protection engineering, in particular to a method for using artificial wetlands to protect river slopes. Background technique [0002] Constructed wetland (Constructed wetland) is a sewage treatment technology developed in the 1970s. It has the characteristics of high efficiency, low cost, and simple operation and management. The earliest constructed wetland appeared in the former West Germany, and then the technology was used in the United States and Canada. And some developed countries in Europe have developed extensively and rapidly. The research and application of constructed wetlands in my country started relatively late. The principle of water quality purification in the constructed wetland ecosystem is that in an area with a certain aspect ratio and bottom slope, soil and filler are mixed to form a filler bed, and suitable local aquatic plants a...

AI Technical Summary

Problems solved by technology

This kind of traditional hard revetment has caused great harm to the ecological environment of the river. The hard revetment has cut off the connection between the terrestrial ecosystem and the river ecosystem, destroyed the environment for the survival, habitat and reproduction of organisms, and affected the river bank landscape and biological environment. diversity

There are many methods of ecological slope protection technologies commonly used at present, such as vegetation-type ecological concrete, geotechnical material composite planting base, articulated slope protection, three-dimensional vegetation net slope protection and other technologies, which have a good effect on bank slope protection and have certain effects on bank slope landscape. improvement, but the interception and purification effect on non-point source pollution is limited, and the cost is too high, so the popularization and use are limited

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