Patent ID: 7128092

Claim:
Separating arrangement comprising a pressurising pump and separation units for separating from a supply fluid a fluid and components contained in admixture, the separation units being responsive to a pressure difference whereby the separation process has improved performance with increased pressure of the fluid, wherein: a first separation unit operable to receive the supply fluid, an input of the pump is connected to the first separation unit to receive from the first separation unit a diluted supply fluid with respect to the admixed components, an output of the pump is connected to a second separation unit for supplying the second separation unit with pressurised diluted supply fluid, and the first separation unit is connected to an outlet selected from the group consisting of an outlet of the second separation unit, which delivers fluid enriched with admixed component, and an outlet of the pump in order to supply the first separation unit with pressurised fluid of original or elevated components concentration, the first separation unit being further operable to separate components from the supplied pressurised fluid to produce a treated fluid and to add the treated fluid to the received supply fluid to produce the diluted supply fluid and to convey the diluted supply fluid to the pump input.