EFFECT OF TAMARIND KERNEL POWDER FOR TREATING DAIRY INDUSTRY WASTEWATERD. SIVAKUMAR, V. BALASUNDARAM, G. VENKATESAN AND S.P. SARAVANANAbstract The effectiveness of Tamarind kernel powder, a cheap agro-based product, as a coagulant was evaluated to remove COD, TDS, BOD, TS, turbidity and sulphate present in a dairy industry wastewater. Experiments were carried out by adding Tamarind kernel powder to the dairy industry wastewater at different dosages, different rapid mixing contact time and slow mixing contact time. Maximum removal of 87.8%, 91.5%, 85.72%, 89.30%, 82.46% and 84.2% respectively for COD, TDS, BOD, TS, turbidity and sulphate was obtained at an optimum dosage of 70 mg/L, maximum removal of 82.8 %, 87.7%, 81.74%, 86.57%, 80.11% and 85.04% respectively for COD, TDS, BOD, TS, turbidity and sulphate was obtained at an optimum rapid mixing contact time of 10 min. and 84.6%, 89.4%, 83.20%, 86.78%, 82.11% and 87.04% respectively for COD, TDS, BOD, TS, turbidity and sulphate was obtained at an optimum slow mixing contact time of 30 min. The results indicated that the use of Tamarind kernel powder, as a coagulant to remove COD, TDS, BOD, TS, turbidity and sulphate present in a dairy industry wastewater seems to be an economical and worthwhile alternative over conventional methods.
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