... 2076-2895 (Print), ISSN 2076-2909 (Online) ©2011 International Energy & Environment Foundation. All rights reserved. 1065[3] M. Narayana Rao, and Amal K. Datta , Wastewater treatment-Rational methods ... and Industrial practices., Oxford & IBH Publishing Co. Pvt. Ltd., New Delhi, India, 2nd edition, 1987. [4] K. R. Ramakrishna and T. Viraraghavan, Use of Slag for Dye Removal. Waste Management, ... solid, COD and Alkalinity. A composite wastewater sample was subjected to treatability study by means of coagulation-flocculation with alum and chemical oxidation with bleaching powder [Ca(OCl)2]...