Studi Efektivitas Koagulan Kitosan-Kapur Dalam Menurunkan COD, MBAS dan Fosfat pada Limbah Laundry

Abstract. Environmental pollution that is often encountered in daily life comes from laundry waste. Laundry waste includes pollutants or substances pollute the environment because it there a substance called linear alkylbenzene sulphonate (LAS). LAS detergent classified as hard to brake down by microorganisms (non-biodegradable) so can cause environmental pollution. One method used wastewater treatment coagulation using chitosan and lime coagulant. The purpose of this study was analyze efficiency effectiveness reducing pollutant levels chitosan-lime This completely randomized design with 200 mg/L 0.1-0.5 g lime. test parameters were COD, MBAS, phosphate. Data analyzed calculation reduction, regression, one-way ANOVA test. results showed under best conditions, much 3.5 resulted reduction 68.52%, 9.15%, 92.44%. Chitosan-lime effective MBAS phosphate quality standard, but coagulant less COD still exceeds established standards