Selective ion separation, water softening, and complex chemical recovery demand specialized membranes with precise molecular weight cut-offs. Dubhe's advanced nanofiltration membrane modules effectively reject multivalent ions like hardness and sulfates, heavy metals, and organic compounds while allowing monovalent salts to pass through. Ideal for color removal, softening, and high-salinity wastewater concentration, these systems deliver exceptional separation selectivity and optimized energy efficiency. Backed by rigorous engineering standards, Dubhe nanofiltration technology supports advanced industrial reclamation processes.