UDC 628.161.2:544.77.052.5:628.16.094.3-926.214
DOI 10.35776/VST.2023.02.07

Pilipenko Marina, Dubina Aleksandr, Likhavitskii Vitalii

Combining ultrasonic treatment and ozonation for wastewater treatment of dyeing plants

Summary

The results of studying the efficiency of purification of model and real wastewater from dyeing and finishing works by combining ultrasonic treatment and ozonation are presented. The effect of the treatment time, ozone concentration in the gas mixture on the purification efficiency has been studied. The purification efficiency was evaluated by optical density and COD. As a result of the study up to 12% increase in the efficiency of wastewater treatment was shown while combining flotation with ozone-air mixture instead of air with ultrasonic treatment. This effect can be associated, first of all, with the dispersion of ozone-air mixture bubbles that results in an increase in the surface area, and, accordingly, in an increase in the kinetics of mass transfer – ozone dissolution.

Key words

flotation , wastewater , dye , ozone , fabric dyeing

For citation: Pilipenko M. V., Dubina A. V., Likhavitskii V. V. Combining ultrasonic treatment and ozonation for wastewater treatment of dyeing plants. Vodosnabzhenie i Sanitarnaia Tekhnika, 2023, no. 2, pp. 53–58. DOI: 10.35776/VST.2023.02.07. (In Russian).

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