The central sewage plant in Konstanz, Germany was built in seven stages between 1968 and 1982. It is a mechanical- biological plant with phosphorous precipitation and anaerobic sludge treatment, the gas produced in the process being used to provide 60% of the unit's power requirements. 30 years after the first Alocit coatings were used to protect concrete on the 3 3 5,660 m buffer and interconnecting 8,200 m rainwater settling tanks, Alocit

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