Underground Water Area Rehabilitation of a leather factory
(Case study)

MAIN STEPS OF THE TECHNOLOGY

• Coagulation
• Flocculation
• Lamella separation with sludge handling to minimize wastes
• Sand filtration – additional suspended solid removal
• Nano-filtrataion
• Softening
• Reverse osmosis 1. (RO1)
• Reverse osmosis 2. (RO2)
• treatment of brine of RO1 to minimize wastes
• Regeneration of softener with brine of RO2
• Heavy-metal separation with ion-exchanger (IX)