Multiple modules can be connected i

Multiple modules can be connected in line using sections of pipes with O-rings at both ends, similar to the product interconnect tubes in RO vessels. This multi-module building block approach provides the system designer with the flexibility of modular design without increasing the complexity of mechanical mounting, piping and electrical connections. A basic system, consisting of modules arrayed on a skid, can form the basis for system integrators to construct systems for specific applications by adding the required piping, instrumentation, controls and power supply. Direct shipment of the basic system from the factory to site is possible, with final assembly on site.