The area of Oevre Sirdal is a rural area, characterized by a small residential population and a great seasonal tourist activity. New hotels and cabins are built, and the municipality expects an intensive growth in the tourist sector in the coming years. In order to meet the challenge from this extensive development, the municipality chose to build a new treatment plant for the whole community.
A greenfield waste water treatment plant was built. The plant consists of a pumping station for incoming waste water, screening, Kaldnes MBBR process, and Actiflo for sludge separation. Both biological and chemical treatment units are comprised of two interchangeable trains. This gives operational flexibility in handling huge variations in flow and load. Sludge is dewatered in a filter press.
Handeland wwtp - Norway case study