Abstract
Granular Activated Sludge - Sequencing Batch Reactor (GAS- SBR) has the ability to treat wastewater with high organic content. This study was conducted to determine the effect of aeration time in setting aside parameters COD, BOD, TSS and Total Ammonia in chicken slaughterhouse wastewater. Chicken slaughterhouse waste water used in this processing is artificial waste water made from a mixture of sucrose, KNO3 and KH2PO4. GAS formation is cultured by reacting activated sludge with stirring (20 rpm). SBR has a total work volume of 45L which is operated in 5 stages (fill – 0,25 hours, aeration time varied for 2 hours, 4 hours and 6 hours, settle - 0.25 hours, draw - 0.25 hours and idle - 6 hour). The results showed that the variation of aeration time for 2 hours resulted in the efficiency of removing COD obtained was 72.83% (influent of 6016 mg / L), BOD was 72.23% (influent of 3614 mg / L) and TSS 59.8% (influent of 2, 8 mg / L). While the variation of aeration time for 4 hours resulted in a total ammonia removal efficiency of 65.85% (influent of 2.29 mg / L).
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