Coagulant Recovery in Water Works
James Keeley, Cranfield University / Severn Trent: PRESENTATION ONLY
(Free)
1. The problems of conventional coagulant use
2. Coagulant recovery – a solution?
3. Potential in potable treatment
4. Potential in wastewater treatment
5. Outlook
Two sides to the problem:
1. Coagulant demand
• >300,000 t/y in UK
• Procurement issues
• Emerging demand from wastewater
2. Sludge production
• >182,000 t/y in UK
• Electricity costs
• Disposal costs
• Limited reuse potential