B Biobed® Advanced EGSB The Biobed® EGSB technology (Expanded Granular Sludge Bed) is an extremely compact, high performance anaerobic treatment process for industrial effluents using granular sludge. Anaerobic Wastewater Treatment H Hydrex™ Comprehensive range of water treatment chemicals to suit all water treatment needs. Sludge treatment M Memthane® Membrane bioreactor for biological treatment of heavily contaminated wastewater. Anaerobic Wastewater Treatment