POLYMERIC FILM EVAPORATION TECHNOLOGY
DAF
CLARIFIERS
MEMBRANE DISTILLATION SYSTEM
BELT FILTER PRESS
OIL REMOVAL SYSTEMS
MULTI EFFECT EVAPORATORS
COD/BOD REMOVAL
MEMBRANE TECHNOLOGY

Our Zero Liquid Discharge (ZLD) system is based on our patented Polymeric Film Evaporation Technology (PFET). Operating cost of our technology is the lowest in the world. Energy source of the system is the latent heat released when the vapour evaporated from wastewater is condensed. This vapour is used as the heating medium after it is compressed and temperature is increased using a high speed centrifugal fan as the vapour recompressor.

Our heat exchangers are polymer based rather than conventional metal type. There are several advantages of using our PFET:

  • Very low operating cost
  • Less prone to scale
  • Can operate on low pH
  • Low maintenance
  • High availability of system

Envisol PFET saves upto 80% energy for ZLD system as compared to any other prevailing technologies. Low energy consumption is due to lower differential pressure and temperature required in our technology. It takes care of the solids in wastewater that are to be removed or recovered before release, which in turn ensures that the cleaned waste water is completely harmless. The chemical free process inside the heat exchanger, with the reduced number of stages in the process, makes the treatment system more conducive to the environment as well.

Combination of PFET system with crystallizer unit results in complete separation of liquid, i.e, pure water and solids, i.e, crystals. The recovered water can be recycled in process, boilers, cooling towers etc. Solids can be either recycled back or used in secured land filling.

In Process Applications:

Envisol PFET is proven in the manufacturing process. Utilization of our evaporation technology can significantly reduce cost of production. Download a case study that explains the cost benefits of our technology in manufacture of Glucose, Dextrose and Glycerin.

Envisol PFET also has in-process applications in the following industries:

  • Milk
  • Fruit Juices
  • Volatile Fatty Acid
  • Metals- Zinc, Nickel and Silver and many more...

Envisol PFET Working Principal: