Anaerobic Digestion (AD) is one of the many important technologies for waste treatment at an economical cost and energy recovery. As this is governed solely by microbial activity, its proper development and optimization are very important. REVY-S is an anaerobic granulated sludge of 1.5-2.0 mm in size and contains more than 650 numbers of various bacteria. This consortium is proven to treat wastewater, and the treated water can be used directly for irrigation purposes and energy recovery.