Further treatment, final disposal and transport of wastewater treatment sludge for Riihimäki Water

Summary

Riihimäki Water is procuring the transport of mechanically dewatered digested sludge from its wastewater treatment plant for further treatment, as well as the further treatment and final disposal of the sludge. The sludge has had a dry matter content of 25–30% and a volume of approximately 3,000 tonnes per year; these figures are not binding. The contract runs from 1 January 2027 to 31 December 2028, with an option for one two-year extension.