Method for treating water bloom blue-green algae harmlessly

Abstract

A method for treating water bloom blue-green algae harmlessly includes: 1 choosing organic macromolecule light flocculant with proportion ranging from 0.2-0.8g / cm3 to prepare spare flocculant mother liquor; 2 setting an arresting barrier on the periphery of an operation area; 3 spraying the prepared flocculant mother liquor along the wind direction with 0.25-3.0L on each square meter of water surface and simultaneously stirring the surface layer water body when density of microcystis aeruginosa in a water body achieves 1*105-106ind / L, potential of hydrogen (pH) value of the water body ranges between 10.0-11.0, illumination intensity on water surface exceeds 20000Lux, and wind power is less than three levels; and 4 when the water bloom blue-green algae in the water body coagulates into cluster shape after 1 to 2 hours, and buoyancy generated by air sacs formed by partial blue-green algae cells or generated by increasing of the air sacs leads the whole flocculation groups to float on the water surface, and dredging the floating flocculated water bloom blue-green algae manually or mechanically. The method can remove the water bloom blue-green algae in water environment effectively, and is easy to implement and good in treating effect.

Description

technical field [0001] The invention relates to a treatment technology for blooming cyanobacteria, in particular to a harmless treatment method for blooming cyanobacteria. Background technique [0002] Because the water contains elements such as nitrogen and phosphorus, the cyanobacteria in lakes and ponds multiply and form a bloom, which not only destroys the lake landscape, but also reduces the oxygen content of the water body. Some cyanobacteria release toxins, which seriously damage the water ecosystem and cause aquatic organisms such as fish and shrimp. death, while endangering human health and survival. The current chemical treatment method is mainly based on flocculation and sedimentation, which may easily cause the resuspension of blue-green algae, or sink to the bottom to die and decompose to release toxins and organic nutrients, resulting in secondary pollution. There is currently no effective way to deal with it. Contents of the invention The technical probl...

AI Technical Summary

Problems solved by technology

The current chemical treatment method is mainly based on flocculation and sedimentation, which may easily cause the resuspension of cyanobacteria, or sink to the bottom to die and decompose to release toxins and organic nutrients, resulting in secondary pollution.

There is currently no effective way to deal with

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