Compact combined anaerobic and aerobic process for the treatment of industrial effluent
A novel combination of tall and slender tanks and reactors has been installed at the Grolsch brewery, located in the urban area of Enschede, The Netherlands. Specific design was required to meet very strict constraints with respect to space, odours, view and biosolids production. The plant consists of buffering, anaerobic and aerobic treatment, whereas sludge handling is not required. The design capacity of the treatment plant is 10.500 kg/d. Removal efficiencies are 80 % on total-COD and 94 % on soluble-COD. Two and a half years of operation confirm that performance is not compromised due to the very small footprint design as well as that further site requirement have been addressed very well.