A method to improve the transparency of nutrient-rich water body by using perch, daphnia and river mussel

Abstract

The invention provides a method for improving the transparency of a eutrophic water body by utilizing weever, daphnia pulex and freshwater mussel, belonging to the field of ecological restoration of awater body. The method comprises the following steps: putting weever and freshwater mussel into the eutrophic water body, and after a week, putting daphnia pulex into the eutrophic water body, wherein the daphnia pulex is fed on particles including algae and organic detritus in the water body; the weever catches and is fed on wild trash fishes to reduce feeding of the wild trash fishes to the daphnia pulex; the freshwater mussel is fed on particles like algae and manure of the daphnia pulex and the weever in the water body by filtering; thus, the transparency of the water body is improved. The method provided by the invention has the advantages of fast action, safety, durability, etc., and has important practical significance on improvement of the transparency of the eutrophic water body.

Description

technical field [0001] The invention relates to a method for improving the transparency of a nutrient-rich water body by using perch, daphnia and mussels, and belongs to the field of water body ecological restoration. Background technique [0002] Lakes are an important water resource for human survival. They not only have abundant water, water conservancy and aquatic resources, but also have the functions of maintaining biodiversity, regulating climate, storing floods, regulating surface runoff, and purifying water. They are important factors for human economic and social development. and an important part of the ecosystem. However, with the rapid development of industry and agriculture in our country, the acceleration of urbanization and the low-level and extensive economic development model, the discharge of industrial wastewater and domestic sewage is increasing, which increases the load of nutrients in these water bodies, water pollution and eutrophication. phenomenon ...

AI Technical Summary

Problems solved by technology

At present, there are several technical methods to improve the transparency of water bodies. One is to add flocculants. Short-term flocculants can improve the transparency of water bodies through flocculation. However, after a few days of flocculant injection, the particles in the water are easy to resuspend, resulting in the decrease of water body transparency. , the effect of adding flocculants is not sustainable; the second is to use membrane or activated carbon to filter to improve transparency, but its cost is relatively high, and it is not suitable for long-term operation; the third is to add chemical reagents, such as adding copper sulfate to kill water. algae, so as to improve the transparency of the water body, because this method puts chemicals into the water body, it is highly toxic to aquatic organisms, and there are environmental safety hazards

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