Riverbed base vegetation type ecological blanket repair method

Abstract

The invention provides a riverbed base vegetation type ecological blanket repair method. The method comprises the steps of: preparing vegetation ground substance by mixing sand and stones, raw soil, substrate sludge, water-retaining agents and water by proportion; uniformly adding aquatic plant seeds or interplanting aquatic plant branches in the vegetation ground substance; covering the vegetation ground substance by nonwoven fabric, and forming a blanket by a pressing machine and a forming machine; and covering a layer of nylon mesh outside to form the vegetation type ecological blanket. When in use, the vegetation type ecological blanket is smoothly laid at riverbed bottom, and bamboo fillers are drilled at the four corners, and the centers of the upper edge and the lower edge of the vegetation type ecological blanket to fix the vegetation type ecological blanket at the riverbed bottom. The invention solves the problems of the difficulty of aquatic plant repair at the riverbed with deeper silt, and the damage to riverbed microecosystem caused by desilting and dredging. Inner source pollution caused by the release of infectant in substrate sludge to water can be effectively restricted, and all of the used materials are environmental friendly. When in use, the vegetation type ecological blanket can be installed and laid conveniently on site, and have low cost and obvious effect.

Description

technical field [0001] The invention relates to an ecological river channel construction technology, in particular to a technology for repairing the biological habitat environment of the river bed base, inhibiting the release of sediment pollutants and purifying the river water body by using the vegetation-type ecological blanket. Background technique [0002] There are a large number of pollutants deposited in the sediment of rivers, lakes and reservoirs, such as nitrogen and phosphorus nutrients, toxic and harmful substances that are difficult to degrade, and heavy metals. Under certain conditions, they will dissolve from the sediment and re-enter the water body to form endogenous pollution. The water quality of rivers and lakes deteriorates and becomes another major pollution source of water bodies. At present, the main technologies used to eliminate endogenous pollution include sediment oxidation, sediment covering, and sediment dredging. [0003] Sediment oxidation is ...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the respective defects of the above-mentioned various river and lake water body source pollution control and river bed micro-ecological system repair technology after dredging, and develop a kind of river bed base repair technology with good comprehensive effect, so that it has good effect, Practical, low investment, simple production, convenient installation and construction, not limited by seasons, time and other conditions, can effectively inhibit endogenous pollution of river and lake sediments, and restore damaged riverbed micro-ecological systems

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