Technique for restraining grass and controlling sludge by using cinder

Abstract

The invention aims to solve the problems of over spread of large-sized vascular plants in grass-type lakes and over-strong biological deposit-promoting effect and provide a technique and a method for restraining grass and controlling sludge for improving the growing water quality condition of aquatic plants and accelerating bottom sludge decomposition. Iron, aluminum and calcium oxides in cinder can strongly adsorb phosphate radical in the water body, the loose and porous surface of the cinder is favorable for the fixation and growth of soil microbes, and a formed biological membrane can effectively remove organic substances and ammonia nitrogen from the water body and accelerate the biological decomposition of the lake bottom sludge. The cinder is filled in a nylon bag and the nylon bag is fixed in a ground cage for facilitating reclamation and preventing physical deposition at the lake bottom. By using the existing resources in rural areas of China and using the local materials, the method is convenient and feasible, and has strong operability and wide application; and the implementation of the technique does not affect the primary ecological function of the ecosystem of the lake and has significance for maintaining the ecological health of the grass-type lakes for long term.

Description

technical field The invention belongs to the field of environmental ecology, and in particular relates to a technology and method for controlling weeds and silt by using cinders, which can economically and efficiently control the spread of aquatic plants in lakes and slow down the process of lake swamping. Background technique In the past 50 years, due to natural siltation and human disturbance, about 3,000 inland lakes have been reduced in my country, and most of the disappeared lakes are shallow water grass lakes. At present, the shrinking and degrading situation of natural lakes is still very serious, and the unique ecological functions of lakes continue to decline. Large-scale grass-type lakes and wetlands such as Wuliangsu Lake, East Taihu Lake, and Baiyangdian Lake have all entered a period of rapid decline in lake evolution, and the lake bottom is rising and swamping. obvious. The rapid swamping of lakes caused by artificially induced massive growth of aquatic plants...

AI Technical Summary

Problems solved by technology

The above technologies and methods are all based on the treatment of excessive spread of aquatic plants and massive sedimentation of the bottom mud, but fail to fundamentally solve the problem of how to reduce the deposition of plant residues by preventing the excessive growth of aquatic plants

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