Method for cooperative control of microcystis aeruginosa by using chub, bighead, silver xenocypris fish and daphnia magna

Abstract

The invention discloses a method for cooperative control of microcystis aeruginosa by using chub, bighead, silver xenocypris fish and daphnia magna, and belongs to the technical field of water treatment. The microcystis aeruginosa in water is controlled through a food chain relationship; the chub, the bighead, the silver xenocypris fish and the daphnia magna can directly eat the microcystis aeruginosa in a filtering manner; meanwhile, the chub, the bighead and the silver xenocypris fish also can intake the daphnia magna, so as to indirectly consume the microcystis aeruginosa in water; the fish, the daphnia magna and the microcystis aeruginosa form the food chain relationship. In addition, the upper, middle and lower microcystis aeruginosa and a microcystis aeruginosa resting body at the bottom can be controlled by fully utilizing the vertical spatial distribution difference of the three fishes in the water, the content of the microcystis aeruginosa in the water can be more effectively controlled, the eutrophication level is reduced, the balance of an ecological system of the water is facilitated, and meanwhile, certain economic value can be obtained by catching the chub, the bighead, the silver xenocypris fish. The method has the advantages of low cost, no secondary pollution and the like, and is simple and feasible.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a method for controlling Microcystis aeruginosa, more specifically, relates to the synergistic control of Microcystis aeruginosa by silver carp, bighead carp, pomfret and Daphnia magna Methods. Background technique [0002] Water algae "water bloom" has become a global environmental problem. It can cause great harm to the use of water resources, such as the drop of dissolved oxygen in water, and the algae toxins released by algae threaten the survival of organisms. Among them, aeruginosa microcapsules Algae is the main species of "water bloom", which dominates in quantity and outbreak frequency. How to control Microcystis aeruginosa has become a difficult problem for the majority of scientific researchers to solve the eutrophication of lakes. [0003] There are many existing algae removal methods. Mechanical algae removal can quickly and effectively remove al...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the prior art poses a certain threat to the ecological balance of the water body and cannot effectively remove algae in each water layer of the water body, especially the problem that Microcystis aeruginosa cannot be effectively removed and inhibited for a long time, the present invention provides a kind of The method of synergistic control of Microcystis aeruginosa by fish and daphnia can establish a stable ecological balance, not only can realize all-round synergistic control of Microcystis aeruginosa at different depths of water bodies, the most important thing is to form a benign ecological regulation