Zero Liquid Discharge Mandates Force Advanced Chemistry Adoption
China's water-stressed northern provinces and several Indian states have moved to require zero liquid discharge for new textile, dyeing, and chemical manufacturing facilities, eliminating conventional effluent discharge as a compliance option. Meeting ZLD standards requires a chemistry stack beyond basic coagulation, including specialty scale inhibitors that protect evaporators and crystallizers from fouling, along with membrane cleaning chemicals that keep reverse osmosis systems running at design recovery rates. Plants converting to ZLD report specialty chemical spend rising by roughly 45 percent per unit of water treated compared with conventional discharge-based treatment trains, a gap widening as mandates spread to additional provinces.
Market Impact: Lifts chemical intensity 25 percent








