Method for treating eutrophication reservoir bloom

Abstract

The invention relates to a method for treating blooms in a eutrophic reservoir. The method combines a water flow partition board, an ecological floating island, physical shielding and in-situ aeration, wherein water flow partition board separate a light controlling separation area and a strengthened purification area in a water intake and the ecological floating island is planted in the light controlling separation area. A physical shielding mechanism is arranged on a water surface layer and an in-situ pipe aeration system is arranged underwater. Raw water flow passes through the water flow partition board and enters the light controlling separation area where light lacks, so harmful algae floats and gathers on the water surface layer and are stopped and caught by plant roots on the floating island. Furthermore, the raw water treated by the light controlling separation are lead by the water flow partition board into the strengthen purification area where the physical shielding mechanism eliminates light underwater and an in-situ pipe aeration device applies aeration to a water body to make the harmful algae in water die out gradually. Finally, effluent treated by the strengthened purification area flows into the intake to be supplied to water plants for use.

Description

technical field [0001] The invention relates to a method for controlling water bloom in a eutrophic reservoir, which is used for eliminating and inhibiting the growth of harmful algae in the reservoir and ensuring water supply safety. It belongs to the technical field of water treatment. Background technique [0002] In recent years, the problem of water eutrophication in urban reservoirs in my country has become increasingly serious. In spring and summer, blue-green algae blooms broke out, threatening the safety of water supply. When an algae bloom occurs, there are as many as hundreds of millions of algae cells per liter of water, and indicators such as COD (chemical oxygen demand) and SS (suspended solids) also rise sharply, resulting in blockage of the filter tank of the water supply plant, a decrease in water production, and turbidity of the effluent The degree of pollution and the excessive content of algal toxins and other problems will cause the water plant to be fo...

AI Technical Summary

Problems solved by technology

However, water surface coverage will cause a significant drop in dissolved oxygen in the water body. In addition, how to implement shading technology on the reservoir site is also one of the difficulties so far.

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