Landscape type multi-stage stepwise artificial wetland protection slope forming method

Abstract

The invention relates to a slope protection forming method of a landscape-type multi-level stepped constructed wetland, which has the effect of intercepting and purifying pollutants entering river channels in the form of surface sources. Sand-free concrete piles and slabs are inserted to form pile-slab components, and a slope protection system from high to low is formed on the river bank slope from the bank slope to the river bed. Planting areas are set on the side of the pile slabs, and there are fillers inside. Geotextiles are installed on the bankside side of the slab, so that when the non-point source pollutants flow from the river bank to the river, the plants planted in the planting area absorb the eutrophication in the polluted water, and the biofilm is formed on the surface of the filler to absorb and degrade the pollutants. After this The sewage treated at the first stage continues to infiltrate or overflow, enters the second row, and goes down step by step. Finally, the sewage is purified to a greater extent and flows into the river. It solves the defects of natural, hard and ecological slope protection. The structure is simple, easy for industrial production, the construction amount is small, the land is saved, and the landscape is beautified.

Description

technical field [0001] The invention relates to an environment-protecting river channel slope protection facility, in particular to a forming method of a landscape-type multi-level stepped artificial wetland slope protection system capable of intercepting and purifying pollutants entering the river channel in the form of surface sources. Background technique [0002] Before the present invention, existing river course slope protection technology has natural type slope protection, hard slope protection and ecological type slope protection. [0003] Natural slope protection is to use plants with well-developed root systems to plant them on the slope of the river to fix soil and sand, prevent soil erosion, meet the needs of the ecological environment, and maintain the natural landscape effect, so as to achieve the purpose of soil protection. However, this natural slope protection method has the disadvantage of poor stability. It is easy to be washed by rainwater to form deep di...

AI Technical Summary

Problems solved by technology

These structures occupy less land and play a certain role in maintaining the stability of the bank slope, preventing soil erosion and flood control safety, but they also have adverse effects on the landscape environment and ecology of the bank slope to varying degrees: the materials used ( Including alkalized aggregate) hydration reaction, carbonization reaction and various additives (such as early strength agent, antifreeze agent, expansion agent, etc.) It makes it difficult for plants and microorganisms to survive and multiply here, seriously destroys biodiversity, causes the deterioration of the water body and land ecological environment, and it is difficult to remove the pollutants entering the river in the form of non-point sources. The construction volume is large and the cost is high.

[0005] There are many methods of ecological slope protection technology commonly used at present, such as the use of geotechnical material composite planting base, barbed wire and gravel composite planting base, geotechnical material soil-fixing planting base, vegetation-type ecological concrete, cement ecological planting base and soil curing agent, etc. Slope protection for river banks and slopes has a good effect on stabilizing the bank slope structure, and has improved the bank slope landscape to a certain extent, but it has a very limited effect on intercepting surface pollutants from entering the river, and the cost of organic cementing materials is too high , the construction was carried out on the spot and the construction volume was also very large, and the popularization and use were restricted

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