Abstract
Membrane Bioreactor (MBR) with sponge cube media and reverse osmosis (RO) were investigated in laboratory scale. Fresh and partially stabilised leachate contained COD/N of 30 and 10 and BOD/COD of 0.7-0.9 and 0.4-0.7, respectively. Continuous and intermittent aeration modes were examined. COD and TKN removals were more than 90%. Highest nitrogen removal efficiency was achieved when aeration of 1 h on and 2 h off cycle were employed. The effluent from MBR was further treated in RO unit with average rejection efficiencies of 75% 97%, 94% and 99% for COD, NH4+, SO42− and PO43−, respectively.
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