The country's economic development depends on industrialization. Water resources are becoming scarce because of increased industrial growth. Water pollution, however, is also a significant problem. People have long been trying to find cost-effective and dependable wastewater treatment methods where recycling or reusing treated water has become a necessity. ZLD is a system made up of discrete operations or processes, or their combination, that prevents the discharge of liquid effluent from a process plant, industry, or other location. The reality that the effluent is effectively treated, recycled and reused indicates that there is no liquid discharge using ZLD. In general, zero liquid discharge is achieved by concentrating the wastewater using a variety of technologies, including membrane-based and MEE-based systems. In the present study, treatment of industrial wastewater from two different fertilizer industries was investigated for 8-month period using two different ZLD treatment plants. Quality parameters including pH, TSS, TDS, COD, BOD, O&G, ammoniacal nitrogen, chloride, sulphate, fluoride, and nitrate were used to evaluate the two ZLD processes