Renewable Energy-Powered Electrochemical Membrane Reactor for Zero-Discharge Industrial Wastewater Management

Abstract

The increasing demand for sustainable industrial wastewater treatment has accelerated the development of zero-discharge technologies capable of minimizing environmental pollution and maximizing water reuse. This study presents a renewable energy-powered electrochemical membrane reactor designed for zero-discharge industrial wastewater management under varying operational conditions. The proposed treatment system integrates electrochemical oxidation, membrane separation, and renewable energy utilization to achieve high-efficiency contaminant removal, resource recovery, and energy-efficient wastewater reclamation. A comprehensive experimental and analytical investigation was conducted to evaluate the influence of renewable energy availability, current density, membrane characteristics, hydraulic retention time, pH, and wastewater composition on treatment performance and system stability. The electrochemical subsystem facilitates degradation of refractory organic pollutants and toxic contaminants through advanced oxidation reactions, while the membrane reactor enables selective separation and concentration of dissolved impurities for water recovery and waste minimization. Renewable energy sources such as solar and wind power were incorporated to provide sustainable electrical input for continuous reactor operation and reduced dependency on conventional energy systems. Performance evaluation demonstrated significant reductions in chemical oxygen demand, total dissolved solids, heavy metal concentration, and organic contaminant levels, resulting in high-quality treated water suitable for industrial reuse. The integrated system also exhibited stable operational performance, enhanced energy efficiency, and minimized secondary waste generation compared to conventional wastewater treatment approaches.