Biological waste water treatment Biobed® EGSB

activated sludgecompactcontinuous

The Biobed® EGSB technology (Expanded Granular Sludge Bed) is an extremely compact, high performance anaerobic treatment process for industrial effluents using granular sludge. Technology Features • ultra high organic loading capacity (15 - 30kg COD/m3/day) • low surface area requirements • energy source from biogas production • economical operation • extremely small footprint • patented triple-baffle internal settler • highly settleable granular biomass • no odor or noise emission • proven reliability Treatment Process To prepare the industrial effluent for anaerobic treatment, the pH-value and the temperature of the raw wastewater are regulated in a pretreatment step in a conditioning tank. The liquid will also be mixed with recycled, treated anaerobic effluent from a recirculation step to attain a homogenous body. Nutrients are added if necessary to achieve optimal growth conditions for the anaerobic biomass in the Biobed® EGSB reactor. In the following treatment step the conditioned wastewater is pumped at a constant, continuous flow to the tall and slender Biobed® EGSB reactor. A special influent distribution system guarantees equal distribution over the entire reactor surface area. The influent then passes a dense and expanded anaerobic granular biomass bed where the biological treatment takes place converting the COD load (Chemical Oxygen Demand) present in the wastewater into biogas. At the reactor top patented three phase settlers, which are installed internally in the reactor, separate the treated water from the produced biogas.