ROCHEM® DTRO® PF Module technology has created major advances in the field of REVERSE OSMOSIS and its use in the desalination and purification of seawater, brackish water, city water and industrial waste water.

The module involves a total reverse osmosis system resulting in a module that operates effectively and economically even at increased turbidity and Silt Density Index levels for reverse osmosis.

Our patented fluid dynamics and construction of the open channel, unrestricted and fully turbulent feed water flow systems mean that suspended solids carried in the water feed cannot be trapped or easily settle outside inside the membrane module. It is easy to maintain and can be repaired on site.


The PF Module is the most successful and cost effective system for treating and recovering the effluent/waste water which can be reused and recycled or discharged based on pollution control board discharge norms.

This diagram illustrates how the feed water flows over the plates, through the slots on the plates, across the underside of the membrane cushion.The inside lips of the plate turn the feed water so that it runs across the top of the membrane cushion and up through the slots to the next plate. The O-rings, shown on the membrane cushion are actually embedded into the plate, preventing the feed water from entering the inner permeate channels.



  • Treatment & re-use of leachate from landfills
  • Effluent & waste water treatment from API, formulation plant & combined effluent from pharmaceuticals industry
  • Effluent treatment from textile industry and dyeing unit
  • Picking & oily waste treatment in steel industry
  • Metal recovery waste recycling
  • Common & combined effluent treatment
  • Recycling of spendwash & biomethanation waste water
  • Reject treatment from spiral RO plants
  • High COD/BOD waste water treatment
  • Backwash recovery and recycling
  • DM plant waste recycling
  • Hazardous chemical waste water recycling
  • Biological waste treatment
  • Concentration of waste water
Using our high rejection membrane for producing high quality permeate

Key Benefits:

  • Simplified pre-filtration
  • Minimize membrane scaling and fouling
  • Reliable robust technology
  • Easy to maintain
  • High recovery rates with low energy costs
  • Compact flexible module units
  • Long membrane life
  • Lower membrane replacement costs
  • Wide range of standard systems
  • Easy access to all membranes
  • Fail-safe unattended operation
  • High quality product water

Why is the ROCHEM-PF-MODULE-SYSTEM the best choice in RO?

Firstly, the patented fluid dynamics and construction of the disc membrane stack result in an open channel, unrestricted and fully turbulent feed water flow system. This means that suspended solids carried in the feed water cannot be trapped or easily settle out inside the membrane module. Most importantly it also means that the infrequent and highly successful maintenance cleaning of the membranes can be achieved using a standard inbuilt cleaning system.

Secondly, ROCHEM is committed to the use of only the highest quality of components, materials and methods of design and construction to ensure for the end user 24 hours per day reliability and product water quality.