Ecological bag brick and method for establishing constructed wetland in water level fluctuation area by use of same

Abstract

The invention discloses an ecological bag brick and a method for establishing a constructed wetland in a water level fluctuation area by use of the same. The ecological brick comprises an ecological bag; steel wire sleeves are arranged around the ecological bag; a steel wire rope is threaded in the steel wire sleeve; multiple connection ropes are arranged on the ecological bag; and the ecologicalbag is filled with filler. The ecological bags are combined into an ecological bag net by steel wires according to the required mode to form an ecological bed. At highstand, the whole ecological bed floats on the water surface to form an ecological floating island which absorbs nutrient salt in water to realize an effect of water evolution; and at lowstand, one part of the ecological bed is attached to a water level fluctuation area to purify the water flowing through the area and form a constructed wetland; and the other part still forms an artificial floating island in water. The method disclosed by the invention conforms to the actual conditions of the reservoirs, lakes and rivers with relatively great water level amplitude, and can purify the contaminated water, ease the eutrophication of water, green the water fluctuation area, recover the habitat of organisms, and grow the landscape vegetation according to the actual needs to beautify the environment.

Description

technical field [0001] The invention relates to the technical field of sewage purification, in particular to an ecological bag brick and a method for constructing an artificial wetland in a water level fluctuation area by using the ecological bag brick. Background technique [0002] The river-type reservoirs, represented by the Three Gorges Reservoir, have a relatively large drop in water level, forming a large-area water level fluctuation zone (fluctuation zone) around the reservoir. During the high water level period, the variable area of ​​the reservoir is submerged by the water body, and the vegetation dies; during the low water level period, the variable area of ​​the water level is exposed, and the vegetation cannot recover quickly, forming an ecologically fragile zone with bare vegetation. [0003] On the one hand, the slopes in the water level fluctuation area are unstable and the vegetation is barren, so that the pollutants on the slopes are not intercepted and dire...

AI Technical Summary

Problems solved by technology

However, these methods can only be applied to the restoration of water bodies with small water level drops. It is basically difficult to implement in water bodies with high drop levels such as the Three Gorges Reservoir, and the restoration of vegetation may cause secondary pollution to the water body after the secondary flooding

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