The industrial WWTP of Komotini is processing wastewater from local industries (dairy, brewery, paper industries etc.). Due to the unstable influent characteristics and the low dissolved oxygen levels in the aeration tanks, bio-augmentation was a key solution for the stable plant operation.
The industrial WWTP of Patras, which is receiving wastewater from local industries has an average influent flowrate of 3,500 – 4,000 m3/d. The plant was producing excess sludge that was ranging from 135 to 266 tons per month which needed to be reduced due to the high expenses for decanter operation and sludge handling.