Technology for direct in-situ treatment and ecological restoration of polluted water body

Abstract

The invention discloses a technology for direct in-situ treatment and ecological restoration of polluted water body, belonging to the field of environment protection. The technology is a systems engineering which synthesizes three contents: 1, a water flow stirring elevator for generating high-flow water flow is installed, fixed and used in water body, so that the water body which is free of flowability or very low in flowability is changed into running water from dead water, and the biochemical reaction environment of water body can be improved; 2, biological membrane fillers which are provided or enriched with a mass of microbial community are arranged in river and lake water body which is preferably oxygenated, so that the organic pollutants or the other microorganism-degradable pollutants in water can be effectively removed in a degradable way; and 3, aerobiont contact oxidation reaction in polluted and nutrition-enriched river and lake water body is carried out, the aquatic plants are planted and the aquatic animals are bred, and the pollutants in the river and lake water body are biologically degraded and purified, so that the in-situ treatment and purification of the polluted river and lake water body can be realized.

Description

technical field [0001] The invention belongs to a water environment pollution control purification and ecological restoration technology. It specifically involves a polluted eutrophic water body, such as semi-enclosed rivers, seaports and closed lakes, reservoirs, ponds, artificial landscape water bodies, etc. Technologies and devices for in-situ treatment, purification and ecological restoration. Background technique [0002] China's per capita water resources are small and the spatial distribution is uneven. With the acceleration of urbanization and industrialization in China, on the one hand, the demand for water resources is increasing, and on the other hand, there is an increasing amount of industrial wastewater and domestic sewage, especially more and more nitrogen and phosphorus nutrients. Discharged into natural water bodies, coupled with farmland runoff, etc., the eutrophication of water bodies is becoming more and more serious, causing serious water pollution...

AI Technical Summary

Problems solved by technology

At present, our country can only use very limited funds for partial treatment, so it can be seen that the serious pollution of rivers and lakes will continue for a long time

[0009] Secondly, technically speaking, even if thorough sewage interception and dredging are carried out, since rivers and lakes are an open water environment, the waste water discharged after treatment by urban sewage treatment plants, and the sewage produced by industrial enterprises and centralized livestock and poultry farms After treatment, the discharged waste water that meets the standard still contains certain pollutants; while the livestock and poultry feces raised in the vast rural areas are difficult to avoid man-made garbage disposal, and the organic matter and nitrogen, phosphorus and other nutrients in the surface soil are mixed with rain, snow, etc. The surface runoff of atmospheric precipitation flows in, and the water bodies of rivers and lakes continue to evaporate. Over time, the water quality of rivers and lakes will be polluted again. Therefore, the problem of water pollution in rivers and lakes cannot be solved once and for all.

[0010] In view of the fact that most of the existing river and lake water bodies have been polluted or seriously polluted, and the pollution will still exist for a long time, it is very necessary and urgent to implement direct in-situ treatment of water pollution and ecological restoration of the polluted river and lake water bodies. At present, sewage interception and dredging, water diversion and water exchange to create a large-scale water circulation, and water pollution control and ecological environment restoration technologies such as dynamic aeration and oxygenation are all at the cost of high energy consumption and increased carbon emissions. , has the disadvantages of large investment, high operating costs, and large resource and energy consumption. Therefore, it is urgent to develop a low-investment, economical, energy-saving and emission-reducing in-situ water pollution treatment and purification and water ecological environment restoration technology.

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