Key Components of a ZLD System

1. Pre-Treatment:

   • Removes suspended solids, oils, and greases from wastewater.
   • Prepares the feed water for downstream treatment.

2. Advanced Filtration:

   • Technologies like Ultrafiltration (UF), Reverse Osmosis (RO), and Nanofiltration (NF) are used to remove dissolved salts and reduce water volume before evaporation.

3. Multiple Effect Evaporator (MEE):

   • Concentrates the wastewater by boiling and evaporating water in multiple stages.
   • Uses a cascading system to reduce energy consumption by reusing heat from one stage to the next.
   • Converts water into vapor and separates salts or other dissolved solids as a slurry.

4. Crystallizer:

   • Further concentrates the brine from the MEE to produce solid waste.
   • Ensures complete removal of liquid from the wastewater stream.

5. Condensation and Water Recovery:

   • The vapor from the MEE is condensed and treated to produce high-quality water for reuse in industrial processes.