Mahmud, in general these ...

Mahmud, in general these approaches are very similar and as Sean explained below the subtle technological advances associated with the CPI approach provide marginally better results/economics although do have drawbacks around reliability.  Our approach at Clean Industrial has been deploying rapid oil water separation capabilities in mobile platform - using an integrated membrane system (IMS).  This system is comprised of an upfront liquid-liquid centrifuge and a ceramic membrane system that are controlled by an intelligent control system which enables a high level of efficiency / reliability of the robust UF ceramic membrane system.  This approach allows for instant separation and often is able to break emulsions that would otherwise remain in a gravity based system.  Our IMS approach gives you high quality effluent / filtrate, ability to deal with varying influent qualilties, rapid and reliable separation via a very small footprint.