Zero liquid discharge plant

Zero liquid discharge systems have become a necessity for all the industries generating liquid effluents. Common effluent treatment plants in most areas have a limited capacity. The zero liquid discharge systems are normally incorporated to treat the R.O. reject streams.

Zero liquid discharge plants consist of a combination of different types of evaporators depending upon the nature of liquid and it's contents. The waste liquid is concentrated to the maximum level in the evaporators which may be either falling film or forced circulation or a combination of both. The number of stages depends upon the quantity of liquid to be handled. The water evaporated from the evaporators is condensed in the condenser and can be reused in the process. The concentrated liquid is then dried in either a spray dryer or a agitated thin film dryer. The dry product obtained in powder form can either be used as a by-product or can be sent for land filling. Features

Features of RAJ Zero liquid dischargeplants:

  • Higher steam and power economy.
  • Simple construction which is easy to operate.
  • Careful l y selec ted mater ial of constructions taking into account the product properties.
  • Optimal space requirement.
  • Skid mounted units up to certain capacities.
  • Capacity range from 1 kL per day to 1000 kLper day.
  • PLC controlled systems.
  • Pure condensate from the system which can be reused in process.


  • Pharmaceutical industry
  • Distillery
  • Chemical and dyes industry
  • Paper industry
  • Steel industry


  • Fully automatic system to ensure smooth and easy operation.
  • Sterile construction of equipment to maintain high hygiene level.
  • Energy Efficient.
  • Optimal space requirement.
  • Carefully selected material of constructions taking into account the product properties.
  • Complete sanitary design with CIP system.
  • PLC controlled SCADA operated system.


  • Turnkey Plants.
  • Manufacturing and Supply of Equipments.
  • Engineering and Supervision of Civil and Structural work.
  • Process and Detailed Engineering.
  • Project Management services.
  • Commissioning and Training.
  • After Sales Support.