Method and system for controlling ecological sensitive area blue algae bloom of eutrophic large-size lakes and reservoirs

Abstract

The invention belongs to the technical field of environmental protection, and particularly relates to a method for controlling ecological sensitive area blue algae bloom of eutrophic large-size lakes and reservoirs. According to the invention, under the action of natural wind power and wind direction, blue algae in a large water area are diverted and converged into an artificially arranged small-range separation area to prevent further escape thereof; then, the blue algae are eaten by algae-eating animals bred at high density in a centralized manner; and when the density of the blue algae is too high, additional manual fishing removal is performed. Effective wave breaking measures are taken to reduce wind waves inside and outside the separation area, thus creating conditions for floating convergence of blue algae. The perennial control on population sources inside and outside an ecological sensitive area reduces the occurrence of blue algae bloom and creates conditions for recovery of other aquatic animals and plants, thus finally forming a benign development situation in which blue algae are less and less and other beneficial organisms are more and more.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method and a system for controlling cyanobacteria blooms in ecologically sensitive areas of eutrophic large-scale lakes and reservoirs. Background technique [0002] At present, many large lakes and reservoirs in my country have serious eutrophication problems. Due to the frequent occurrence of cyanobacteria blooms caused by eutrophication of water bodies, they often have a major impact on the water safety and human living environment of surrounding cities. In response to the increasingly serious impact of cyanobacteria blooms in large lakes and reservoirs, a large number of researches and engineering applications have been carried out at home and abroad in the aspects of exogenous pollution interception, endogenous dredging, bioremediation, and cyanobacteria salvage. Although these works have played a certain role in reducing the exogenous pollut...

AI Technical Summary

Problems solved by technology

The improvement of water quality and the control of cyanobacterial blooms in large eutrophic lakes often take a long period of time, but how to effectively control local ecologically sensitive areas before the water quality in a large area has not been significantly improved and the cyanobacterial blooms have been effectively controlled. The cyanobacteria blooms in the world, ensuring its ecological security, is still a difficult problem that has not been well solved