Disposal of sewage sludge

ea together with sludge/bio residue from FREVAR ́s biogas facility. Frevar can, in periods, have an agreement for temporary storage of hygienicised and stabilised sludge from other municipalities.

FREVAR KF ́s sewage treatment plant is a mechanical/chemical facility that cleanses sewage water from Fredrikstad and Hvaler municipalities. Ready hygenised and stabilised sludge will be temporary storage at FREVAR ́s ar