Industrial units are facing multiple problems for survival such as in effluent water discharge. It could be very difficult to get process water abundantly as water sources are limited and it is very essential for industries to recover as much water as possible for recycling. Many industries are considering “ZERO OR NEAR ZERO LIQUID DISCHARGE. “To achieve Zero or Near Zero liquid discharge many existing operations are required such as: i) Filtration of suspended solids ii) Concentration of soluble minerals &salts and its recovery for concentration and recovery of mineral salts, equipment’s such as evaporators are used.