Vinasse Treatment With Aerobic Microbial Method Using Activated Sludge

Abstract

Abstract Vinasse liquid waste in this study obtained from the ethanol industry which has organic load of COD of 202,232.14 mg/L and BOD of 32,911.47 mg/L. Aeration is used to operate the activated sludge process unit to remove BOD from wastewater in the aerobic microbial method. The research was conducted by conditioning 3L of vinasse wastewater at pH 7 by adding 1 N NaOH, then the acclimatization process was carried out for 24 h using activated sludge with concentration of microorganisms is 13.578 gr/L and 5 L/min of air flow rate in the aeration tank. The processing of vinasse wastewater 3L at pH 7 was carried out on the addition of acclimatized activated sludge microorganisms with quantity 13,578 through 40,734 mg and aeration times in the range of to 2 through 10 h. Removal of organic matter from vinasse waste by activated sludge can be associated with the growth of microorganisms. The results showed that the addition of 40,734 mg of microorganisms for 8 h of aeration obtained the COD removal of 69.273 %, and BOD of 96.652 %.