A kind of modified red soil for removing cyanobacteria and preparation method thereof

Abstract

The invention discloses modified red soil for removing cyanobacteria. The modified red soil comprises raw materials in percentage as follows: red soil, polyepichlorohydrin-dimethylamine, polymeric ferric sulfate and water. A preparation method of the modified red soil comprises steps as follows: 1, weighing out the polyepichlorohydrin-dimethylamine, and diluting the polyepichlorohydrin-dimethylamine with water through stirring to obtain a polyepichlorohydrin-dimethylamine mother solution; 2, weighing out the polymeric ferric sulfate, and diluting the polymeric ferric sulfate with water to obtain a polymeric ferric sulfate mother solution; 3, weighing out the red soil, and dissolving the red soil after drying and grinding to obtain a red soil mother solution; 4, adding the polyepichlorohydrin-dimethylamine mother solution and the polymeric ferric sulfate mother solution to the red soil mother solution, and diluting the mixture with water to obtain the modified red soil. According to the modified red soil, the polyepichlorohydrin-dimethylamine and the polymeric ferric sulfate are used as flocculating agents, the red soil is used as a flocculation aid, and active aluminium and active iron, which are higher in content, of the red soil are used as coagulants, so that the cyanobacteria removal rate is increased, and secondary pollution cannot be caused after the cyanobacteria are removed. The preparation method is simple, low in cost and simple to operate.

Description

technical field [0001] The invention relates to a material for removing cyanobacteria in a water body and a preparation method thereof, in particular to a modified red soil for removing cyanobacteria and a preparation method thereof. Background technique [0002] With the continuous development of my country's industrialization, the frequency and scope of water pollution, especially water eutrophication, have increased significantly. Cyanobacterial blooms are a significant feature of water eutrophication. The mass reproduction of algae that form blooms is a sensitive sign of water quality changes and the main appearance of water eutrophication. Algal blooms may produce toxic and harmful secondary metabolites (algae toxins and odorous substances), which are released into water bodies, posing a threat to aquatic organisms and even human health, causing odor problems in water bodies and aquatic products, and causing pungent odors in water bodies and aquatic products Unpleasant...

AI Technical Summary

Problems solved by technology

However, at present, the limitations of various methods are very obvious. Ultrasonic algae removal, chitosan modified soil algae removal and mechanical salvage methods are all costly, and it is difficult to continue to promote large-scale use. The biological algae control effect of silver carp and bighead carp is slow and the actual effect There is still a lot of controversy, so it is imminent to develop a low-cost algae removal method. This scheme uses cheap commercial raw materials polyamine and polyferric sulfate, combined with iron-rich aluminum red soil in Jiangxi, Guangdong, Hainan and other regions, and obtained a low-cost algae removal method. , the red soil modified by iron polyamine can be used on a large scale, in order to efficiently remove cyanobacterial blooms in the water bodies of large lakes

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