New initiative Alu Circles: converting sludge waste in water plants into a valuable resource

13 December 2018 — Cost reduction and sustainability are already proven in practice for residuals from drinking water production including lime pellets and ferric sludges. Aluminium based sludges are the next target, the disposal of which comes at substantial and ever-increasing cost. Alu Circles, an international initiative based on PCP (Pre-Commercial Procurement) principles,...