This technology addresses chromium pollution in electroplating wastewater by developing a novel N-methylimidazole-structured macroporous anion exchange resin and supporting processes. The resin features high stability, wide pH adaptability, rapid and highcapacity adsorption (superior to traditional resins), and easy regeneration. The technology significantly reduces raw material costs, discharge fees, and hazardous chromium-containing sludge, achieving both environmental and economic benefits while laying the foundation for comprehensive multi-metal recovery.

Technology provider:Changchun Institute of Applied Chemistry