Author : B. K. Bindhu 1
Date of Publication :20th September 2016
Abstract: Conventional activated sludge process plants requires a large footprint because of the poor settling characteristics of the activated sludge. Aerobic granulation technology is proved to an effective and economic technology to overcome the drawbacks of conventional activated sludge process like low organic loading rates and long settling time. Aerobic granulation was experimented in a laboratory model of sequencing batch reactor with high organic loading rates and low settling times. Very good performance was observed with organic loading rate of 6 kg of COD/m3.d and with a settling time of 5 min. Aerobic granules of 2.4 mm size and sludge volume index of 26 ml/g were developed at optimum conditions. A removal efficiency of 98% was observed for chemical oxygen demand. The experimental study proved that aerobic granulation technology is a more effective and economic technology for the treatment of wastewater compared to conventional activated sludge process
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