sludge only.
oxygen requirements and excess sludge production
When the biodegradable organic matter has been consumed by a mass of micro-organisms in an aerobic medium, we have:
on the one hand ... Suspended growth, Sludge treatment, Clarifiers, Denitrification, Nitrification, Biological reactor, Phosphate removal, Aerobic, Anaerobic, Biological processes, Cyclor ... Suspended growth Sludge treatment Clarifiers Denitrification Nitrification Biological reactor Phosphate removal Aerobic Anaerobic Biological processes Cyclor...