Water body eutrophication treatment technology based on daphnia magna domestication method

Abstract

The invention relates to a method for biologically eliminating and controlling the eutrophication of an open water body on the basis of a daphnia magna food chain relationship according to the principle of in-situ ecosystem remediation, and particularly relates to a daphnia magna domestication method. The method comprises the following steps: selecting a target water body to be treated; monitoring the water quality and pollution sources of the water body; according to the water quality and the pollution sources, domesticating and cultivating daphnia magna by stages with scenedesmus obliquus and eutrophic water mixed liquids until the daphnia magna is completely adapted to the environmental condition of the target water body to be treated, wherein the scenedesmus obliquus and eutrophic water mixed liquids have different scenedesmus obliquus concentrations; then continuously, regularly and uniformly putting the daphnia magna into the target water body according to a low concentration; and finally introducing specific fish, such as aristichthysnobilis, which feeds on the daphnia magna. Through the method, the problem of eutrophication of the open water body can be solved effectively, an original ecosystem is recovered, and in-situ remediation of the water body is realized.

Description

technical field [0001] The invention relates to a technique for eliminating and preventing eutrophication of open water bodies based on the principle of in-situ restoration of the ecosystem, based on the relationship of the Daphnia magna food chain, especially the domestication and cultivation method of the Daphnia magna. Background technique [0002] Due to the surge in population and some unreasonable human social activities, a large amount of pollution sources such as domestic sewage and industrial wastewater containing nitrogen and phosphorus are discharged into natural waters indiscriminately, which greatly exceeds the self-purification capacity of water bodies. When the pollution exceeds a certain limit, it will cause eutrophication of the water body, and a large number of single-celled algae, especially blue-green algae, begin to grow explosively. These algae often float on the water surface, saturating the dissolved oxygen on the surface of the water body and blocking...

AI Technical Summary

Problems solved by technology

In addition, it is difficult for fish to survive in eutrophic water bodies, mainly because a large amount of dissolved oxygen is consumed by algae, and fish die of suffocation due to lack of oxygen, and some algae also release toxins, which directly cause poisonous effects on fish