Method for killing water surface algae

Abstract

The invention relates to a method for killing water surface algae. A heterogenic characteristic of water surface distribution of harmful algae is utilized; an algicide is prepared into a floating algicide; an effective amount of the floating algicide is put into an area with condensed algae in a shining morning, and active ingredients are mainly diffusing on the water surface to reach an efficient algicide concentration, so as to kill harmful algae selectively without influencing other beneficial algae in the water body. The method has characteristics of high efficiency, safety, low cost and reduced secondary pollution, etc.

Description

technical field [0001] The invention relates to a method for killing algae, in particular to a method for killing algae on the water surface. Background technique [0002] At present, due to the deterioration of the environment, frequent outbreaks of cyanobacteria have become a major problem in water supply, landscape, breeding and environmental protection industries, while red tides have caused coastal water pollution and the death of marine animals. Algae pollution has become a worldwide problem. [0003] Because the cells of cyanobacteria can secrete mucus and have the ability to bind between cells, especially the toxic Microcystis, in most cases, they exist as aggregates of multiple cells, so cyanobacteria cannot be considered as It is a strictly unicellular algae. In addition, cyanobacteria also have the following characteristics: first, there is an air sac structure inside the cell, which can help cyanobacteria float on the water surface, and can gain an advantage in...

AI Technical Summary

Problems solved by technology

[0008] First, for aquaculture ponds, single-celled algae under the water surface are the most important primary production factors. They perform photosynthesis to produce oxygen, and evenly distributed algicides will not only kill harmful algae on the surface of the water body, but also kill Beneficial algae in the middle of the water body will lead to hypoxia in the water body and affect the survival of farmed animals

[0009] Second, secondary pollution problems

One is the impact of high concentrations of algicide itself on the environment; the other is the nutrients and toxins released by a large number of dead algae, which will cause more serious impact on the environment

[0010] Third, due to the large water body in reservoirs and lakes, evenly distributed algicides require a very high cost to achieve an effective algicidal concentration

[0011] Fourth, marine red tide, because the water body is nearly infinite, it is difficult for any algicide evenly distributed to reach an effective algicidal concentration, which is also the fundamental reason why the existing algicidal technology cannot take measures to effectively control red tide

However, prior art does not take advantage of this characteristic of harmful algae for control