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The viscose fiber manufacturing process generates large volumes of acidic wool-washing wastewater containing sulfuric acid (H₂SO₄), sodium sulfate (Na₂SO₄), zinc sulfate (ZnSO₄), and organic matter. This complex acidic effluent presents significant treatment challenges due to high operational costs and technical complexity.

Keysino’s proprietary recovery process efficiently removes organic contaminants while concentrating reusable H₂SO₄, Na₂SO₄, and ZnSO₄ for direct reintegration into production systems. Simultaneously, the system generates RO-grade water during the concentration phase, reducing wastewater treatment costs by 50-60% and enabling resource circularity. This dual-benefit solution not only resolves long-standing industrial disposal challenges but also creates new revenue streams through recovered materials and minimized freshwater consumption.