A kind of preparation method of environment-friendly algae-removing coagulant

Abstract

The invention discloses a preparation method of an environment-friendly algae-removing coagulant. The preparation method is as follows: (1) taking aluminum chloride hexahydrate, ferric chloride hexahydrate and cerium trichloride hexahydrate respectively after sieving Powder, mixed evenly, heated for one roasting, air cooling, mixed with iridium trichloride, second roasting, air cooling; (2) Add deionized water to the roasted powder to react until dark brown polymer is formed and air cool to room temperature Stop stirring to obtain the crude coagulant; (3) Configure an aqueous solution of sodium hydroxide, soak the crude coagulant in the aqueous solution of sodium hydroxide, stir rapidly, then add iron oxide powder and hydrogen peroxide sequentially therein, and the feeding is completed Then continue to stir, stand at room temperature for more than 20h, and freeze-dry to obtain the coagulant. The algae-removing coagulant prepared by the invention has good algae-removal effect, less water pollution, and is suitable for primary treatment of water body pollutants.

Description

technical field [0001] The invention relates to the technical field of environmental treatment, in particular to an environmentally friendly algae-removing coagulant and a preparation method thereof. Background technique [0002] Algae-rich water will bring difficulties to the water quality treatment of waterworks. During the metabolism of algae cells, organic matter will be released into the water body, including odor and smell substances, and disinfection by-products will be produced during the disinfection process. At present, there are three commonly used algae removal methods: biological removal, chemical removal and physical removal. Physical methods include ultrafiltration membrane method, air flotation method and activated carbon adsorption method. The ultrafiltration membrane method has a good removal effect on algae cells and extracellular polymers in water, but algae and algae-derived organic matter can easily block the membrane pores, causing serious membrane fo...

AI Technical Summary

Problems solved by technology

The ultrafiltration membrane method has a good removal effect on algae cells and extracellular polymers in water, but algae and algae-derived organic matter can easily block the membrane pores, causing serious membrane fouling

The air flotation method is only suitable for water treatment with high algae and low turbidity. At the same time, the water plant must build new structures and newly added water pumps to increase energy consumption and increase the treatment cost of the water plant.

Biological treatment uses bacteria that can dissolve algae to destroy the algal cell wall, but after the algae ruptures and dies, the organic matter in the cells will be released, consuming dissolved oxygen in the water body, increasing the concentration of total organic carbon in the water body, and destroying the ecological balance of aquatic organisms

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