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 I Idrascreen™ High capacity compact screening units for wastewater pretreatment and solids separation. Screening and Separation M Memthane® Membrane bioreactor for biological treatment of heavily contaminated wastewater. Anaerobic Wastewater Treatment