FIELD: chemical industry; environmental protection.
SUBSTANCE: used to treat wastewater containing powdered carbon materials. The method of electroflotation extraction of powder carbon materials from aqueous solutions includes electroflotation in the presence of a coagulant based on an aluminum (III) salt, a nonionic flocculant and background salts of nitrate or sodium chloride at a current density of 0.02 A/dm2, pH 6 for 20 minutes. The process is carried out at a mass ratio of flocculant and coagulant of 1:3.
EFFECT: increasing the concentration of the recovered powdered carbon material to 1.6 g/l and increasing the degree of its extraction to 90-94% while maintaining the electroflotation time of 20 minutes.
1 cl, 2 tbl
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