American Society of Civil Engineers

Evaluation of Membrane Filtration and Ozonation Processes for Treatment of Reaction Dye Wastewater

by Jiangning Wu, (Postdoctorate, Dept. of Biol. and Agric. Engrg., Univ. of Georgia, Athens, GA 30602), Mark A. Eiteman, (Assoc. Prof., Dept.of Biol. and Agric. Engrg., Univ. of Georgia, Athens, GA), and S. Edward Law, (Prof., Dept. of Biol. and Agric. Engrg., Univ. of Georgia, Athens, GA)

Journal of Environmental Engineering, Vol. 124, No. 3, March 1998, pp. 272-277, (doi:

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Document type: Journal Paper
Abstract: Membrane filtration coupled with ozonation of the retentate was used for the treatment of colored textile wastewater. The textile wastewater examined was simulated from a commercial batch formula and contained organic dyes, sodium chloride, and copper among its components. A selected membrane filtration process generated a permeate with over 99% of the color and copper removed, while 84% of salt by mass and 85% of the original water were reusable. The effect of pressure, cross-flow velocity, feed concentration, and membrane fouling on permeate flux also was investigated. Subsequent ozonation of several different concentration retentates each followed first-order reaction kinetics and removed color effectively. However, the decolorization rate constant decreased with increasing initial dye color. An empirical correlation was established for the apparent first-order rate constant of ozonation and the initial dye concentration. The relationship between the apparent rate constant and the dosage of ozone input also was investigated.

ASCE Subject Headings:
Water treatment
Wastewater management