Ecological weir dam and river water ecological restoration method

Abstract

The invention relates to an ecological weir dam and a river water ecological restoration method. The invention aims to provide an ecological weir dam and a river water ecological restoration method. According to the technical scheme, the ecological weir dam is characterized by comprising a filter unit, an aeration unit and a wetland unit which are sequentially arranged from upstream to downstream,wherein the heights of the filter unit, the aeration unit and the wetland unit are gradually reduced. The method is suitable for the technical field of ecological management.

Description

technical field [0001] The invention relates to an ecological barrage and a river water ecological restoration method. Applicable to the field of ecological governance technology. Background technique [0002] With the rapid development of my country's economy, the continuous expansion of urban scale and the increase of population, the amount of sewage discharge is increasing day by day, the water environment is polluted and destroyed, and the available water resources that meet the water quality standards are greatly reduced. [0003] The current prominent water pollution problem in my country is that the load of water pollutants exceeds the self-purification and carrying capacity of the water ecosystem, resulting in eutrophication of rivers and lakes. Eutrophication of water quality occurs not only in closed or semi-closed water bodies such as lakes, reservoirs and bays, but also in stagnant small urban inland water bodies, semi-closed river banks, river channels and estu...

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Problems solved by technology

[0005] Even if thorough sewage interception and dredging have been carried out, since rivers and lakes are an open water environment, standard wastewater discharged after treatment by urban sewage treatment plants, and sewage produced by industrial enterprises and centralized livestock and poultry farms after treatment is discharged up to standard wastewater , still contains certain pollutants; and the livestock and poultry manure raised in vast rural areas is difficult to avoid man-made garbage disposal, and the organic matter and nitrogen, phosphorus and other nutrients in the surface soil flow into the surface with the surface runoff of rain, snow and other atmospheric precipitation. However, with the continuous evaporation of river and lake water, the water quality of river and lake water will be polluted again after a long time, so the problem of river and lake water pollution cannot be solved once and for all.

[0006] 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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