Ecological restoration system suitable for hard revetments of high-flow-rate polluted rivers

Abstract

The invention provides an ecological restoration system suitable for hard revetments of high-flow-rate polluted rivers. The system comprises an upstream permeable wall, a plant area and a downstream permeable wall, wherein the upstream permeable wall is connected with the plant area through an iron wire net, the plant area is connected with the downstream permeable wall through the iron wire net,bio-balls are arranged in the downstream permeable wall, and microorganisms are attached to the bio-balls; incoming water flows into the plant area at a lower flow rate after being dissipated and adsorbed by the upstream permeable wall, is purified by plants, then flows into the downstream permeable wall, is degraded by the microorganisms attached to the bio-balls and arranged in the downstream permeable wall and flows out of the system. The system has the advantages as follows: 1) energy dissipation can be effectively performed on high-flow-rate water, and impurities can be filtered and adsorbed; 3) sustainable ecological restoration can be performed on water; 4) the bio-balls are arranged in the downstream permeable wall, and the purification capacity is improved; 5) the erosion effect of the water on the revetments is weakened; 6) the overall process device of the system is made of an environment-friendly lightweight material, and the whole device is convenient to install, replace and maintain.

Description

technical field [0001] The invention relates to an ecological restoration system suitable for hard revetments of high-velocity polluted rivers, belonging to the field of ecological environment construction. Background technique [0002] With the increase of population and the rapid development of urban construction, a large amount of sewage and wastewater containing nutrients is discharged into the river, polluting the water environment of the river and destroying the ecology of the river. As an important part of the river, the river bank is the link connecting the water area and the land, and it carries the important function of river ecological restoration. Since the founding of the People's Republic of my country, our country has built a series of engineering measures such as reservoirs, dams, and embankments on various rivers. These existing projects have produced huge benefits; however, the hardening of river banks or river beds has led to the loss of their ecological f...

AI Technical Summary

Problems solved by technology

One is to dismantle or renovate the original river bank slope protection on a large scale, such as "An Ecological Gabion for Hard River Slope Protection" (ZL205475096U) and "An Inland River Slope Ecological Bank Protection Structure" (ZL107299618A). In order to restore the original ecological structure of the river bank slope protection, but this kind of method depends on the existing slope protection needs to be a specific structure or completely demolish the river bank to reconstruct the structure, and the engineering volume is huge

Another method is to extend the "river bank" to the water body on the existing basis to reduce the adverse impact of existing structures, such as "A Restoration Method for Submerged Plants on Hard Slopes" (ZL102217471A). Small size, convenient construction, and also plays a role in ecological restoration of the river, but in the existing technology, most of the consideration is the ordinary river, for the high-velocity river, the use of the existing method is easy to cause the damage of the plants and form secondary pollution

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