Emergency treating method for eutrophic water blue algae eruption

Abstract

The invention provides an emergency treatment method for eutrophic water blue algae eruption. An enclosure device used for forming a treatment area is arranged by facing the prevailing wind direction in which blue algae float and are gathered; a salvaging device is used for salvaging the algae in the treatment area; a peak shaving pool is used for temporarily storing the salvaged algae; blue algae cell degassing, flocculation precipitation separation, floatation separation and magnetic separation are adopted to achieve algae and water separation, and algae slag is formed; a dewatering device is used for conducting dewatering treatment on the algae slag, and algae mud is formed; and drying treatment is conducted on the algae mud, and algae particles with the water content smaller than 40% are formed. In the emergency treatment method, efficient salvaging, collecting and algae and water separation are achieved when blue algae are erupted in eutrophic water while the original landscape is protected, volume reduction is achieved to a great extent, removed algae clean water can directly flow back into the water, waste of water resources is avoided, in addition, the algae particles can serve as organic fertilizer to be used, and continuous and efficient non-pollution treatment is achieved.

Description

technical field [0001] The invention relates to the technical field of water environment protection, in particular to a method for emergency treatment of cyanobacteria outbreaks in eutrophic water bodies. Background technique [0002] The explosive growth and reproduction of cyanobacteria and large-scale accumulation is a representative indicator of eutrophication in rivers, lakes, reservoirs, ponds and other water bodies. There are more than 2,000 natural freshwater lakes and nearly 100,000 reservoirs in China. The water environment is seriously polluted. More than 50% of the lakes are eutrophic to varying degrees. Most of them have cyanobacteria outbreaks, and the density of cyanobacteria in some reservoirs is also on the rise. The threat of blue-green algae to the safety of drinking water sources, the hazards of aquatic ecology and the impact of water and land landscape are becoming more and more serious, and the control of blue-green algae is imminent. At present, there...

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Problems solved by technology

However, if the salvaged blue-green algae are not treated and disposed of harmlessly, it will also cause secondary pollution

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