Effectiveness of Coconut Fiber Filter in Grease Trap with Varying Retention Times on the Reduction of Oil and Grease in Canteen Wastewater of a Textile Industry

Abstract

The canteen in a textile industry currently lacks a domestic wastewater treatment facility, resulting in dishwashing wastewater containing oil and grease concentrations of 132.84 mg/L, which exceeds the quality standards. This study aimed to evaluate the effectiveness of coconut fiber as a filtration medium in a modified grease trap with varying retention times. An experimental pre-test post-test with control design was employed and grab sampling was used to collect wastewater samples inlet and effluent grease trap reactor as treatment. The determination of oil and grease concentrations was performed using the gravimetric method. Statistical analysis was performed using one-way ANOVA. The results demonstrated that oil and grease concentrations were reduced by 87.38% at 5 minutes, 90.75% at 10 minutes, and 92.75% at 15 minutes of retention time. Coconut fiber was found to be effective as a filtration medium for reducing oil and grease in canteen wastewater. It is recommended that industrial canteens apply coconut fiber in grease traps with a retention time of 15 minutes.