rationale for harmonising separate collection systems for municipal waste. The present report reviews and identifies the key … parameters and elements making up a waste collection system, covering the range of different approaches currently followed in the … Member States (e.g. "common bin colours, harmonised symbols for key waste types, product labels, information campaigns and …

Pickling processes in stainless steel industry produce large amounts of waste which contain a lot of valuable nickel … was to recover this nickel from waste acid as well as from neutralisation sludge for re-using it in the steelmaking … route for the treatment of the waste acid contains the following unit operations: first precipitation (removal of the non …