Zero Liquid Discharge System (ZLDS) is an advanced wastewater treatment approach designed to eliminate liquid waste discharge by recovering all wastewater as usable water and minimizing waste generation. This system employs a combination of cutting-edge technologies such as reverse osmosis, evaporation, crystallization, and other separation processes to treat and recycle wastewater completely.

ZLDS functions by treating wastewater through various stages, where impurities, dissolved solids, and contaminants are progressively removed, leaving behind high-quality water suitable for reuse or safe discharge. Through processes like membrane filtration and evaporative techniques, water is separated from dissolved solids, producing clean water for reuse while concentrating residual contaminants for proper disposal.