Abstract
Abstract The aims of this work were the examination of the treatment potential of landfill leachates domestic wastewater mixtures by a pilot scale membrane bioreactor system using a submerged plate and frame microfiltration (MF) membrane module and the investigation of the optimum operation conditions for the achievement of maximum COD and total nitrogen removal rates. The bioreactor was inoculated by 60 l of activated sludge and operated at an MLSS content reaching up to 25,000 mg/l; increased COD removal efficiencies were observed reaching up to 98%. High ammonium nitrogen removal efficiencies were achieved reaching up to 99% at extended operation times associated to long SRTs, resulting in effluent concentrations of about 1 mg/l; however, total nitrogen content of effluents was high, about 160 ± 50 mg/l, due to reduced denitrification capacity of the system.
Published Version
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