Questionnaire How many inhabitants are attached to your WWTP?: What is the amount of sludge produced per year in tons?: What is the aerobic sludge age on average?: Which processes for sludge treatment are integrated in your WWTP? (select all that apply): Sludge thickening tank Anaerobic digestion Decanter Chamber filter press Other Please specify: What is the dry matter content of the sludge at the end of your process?: What is your current process for sludge disposal?: Supported by
