DECREASEMENT OF COLOUR AND COD CONTENT OF THE LIQUID WASTE PRODUCT FROM THE JEANS WASHING INDUSTRY BY CHITOSAN AND Trametes versicolor - Bulan, Rumondang; Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Sumatera Utara, Jl. Bioteknologi No. 1, Kampus USU Medan 20155 (Universitas Gadjah Mada, 2010)