At the Shelf Stofta waste plant, leachate is purified in a local SBR plant. The purification technique is biological nitrogen unification using SBR technology. The denitrification step is required the addition of readily available carbon, in the form of an ethanol/methanol-based carbon source.

At the Shelf Stofta waste plant, leachate is purified in a local SBR plant. The purification technique is biological nitrogen unification using SBR technology. The denitrification step is required the addition of readily available carbon, in the form of an ethanol/methanol-based carbon source.