A method for constructing an ecological purification system for sediment-polluted shallow and narrow rivers

Abstract

The invention relates to a method for constructing an ecological purification system for a substrate sludge-water polluted type shallow-narrow river. The method is used for solving the problem of local substrate and water pollution of the shallow-narrow river. The method comprises the steps of arranging an overflow weir, which is formed through piling up stones, behind a submerged plant filter bed; arranging the submerged plant filter bed in a trunk riverway, wherein plant planting troughs are formed in the filter bed, and submerged plants are planted in the filter bed; arranging emerging plant filter beds behind the overflow weir; arranging ecological floating bed-water purifying fence combined modules behind the emerging plant filter beds, wherein the submerged plant filter bed, the overflow weir, the emerging plant filter beds and the ecological floating bed-water purifying fence combined modules jointly form an ecological purification unit; and arranging a plurality of ecological purification units in the riverway, thereby forming a multiunit ecological purification system. According to the method, through constructing the multiunit ecological purification system, the simultaneous removal of substrate sludge and water pollutants is realized, so that the method has the advantages that the ecological benefit and landscape effect are obvious, the flood discharging of the riverway cannot be affected, and the landscape diversity of the river is improved.

Description

technical field [0001] The invention relates to the technical field of water ecological restoration, in particular to a method for constructing an ecological purification system for shallow and narrow rivers polluted by sediment water quality. Background technique [0002] In recent years, with the acceleration of industrialization and urbanization in our country, the situation of river pollution has been severe, and the ecosystem has degraded to varying degrees, which directly affects the normal function and sustainable use of rivers. Sediment is the substrate for the growth of aquatic plants and the place where benthic animals multiply. At the same time, the sediment also has a strong ability to enrich pollutants. After a large amount of pollutants are enriched in the sediment in the river, it will release heavy metals, Organic pollutants and pollutants such as N and P nutrient salts have a serious impact on the water quality of the overlying water body. Therefore, sedimen...

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Problems solved by technology

[0004] In view of the above situation, in order to overcome the technical defects, the purpose of the present invention is to provide a method for constructing an ecological purification system suitable for shallow and narrow rivers with sediment water pollution, so as to solve the local bottom quality and water pollution problems of shallow and narrow rivers.

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