Based on water quality, coal mine wastewater can be categorized into four types: mine water with high suspended solids, mine water with high mineralization, mine water containing special components and acidic mine water. Recent environmental policies explicitly require: increasing wastewater reuse rates, ensuring any necessary discharges meet surface water environmental quality standards for receiving water bodies, and promoting (near) zero liquid discharge treatment in regions with suitable conditions. Leveraging its comprehensive membrane products (e.g., UF, RO membranes), Shuiyi provides the industry with integrated solutions covering wastewater treatment, reclaimed water reuse and (near) zero liquid discharge.