A Zero Liquid Discharge System (ZLDS) is designed to recover water and solvents from wastewater, resulting in zero waste through dehydration. This book provides a comprehensive guide to the zero-liquid discharge process, highlighting its importance in preventing environmental hazards associated with improper industrial wastewater disposal, such as water and soil pollution. It emphasizes the need for proper disposal methods to protect ecosystems and public health by examining the implications of chemical contaminants in water systems. As industrial pollution increases, the book explores practical approaches to managing industrial residues locally and globally via ZLDS. It reviews the health effects of industrial chemicals and current policy limitations and offers recommendations for effective wastewater management. Additionally, it discusses the financial aspects and operational requirements of ZLDS while highlighting the potential for hazardous dry sludge containing heavy metals. Overall, the book underscores the necessity of careful planning and analysis in implementing ZLDS technology.