Membrane performance parameters have been obtained for high water recovery operation in the pressure range up to 1.4 MPascals (200 psig) for system modeling. Simple equations can be fitted to these measurements, from which RO system performance can be predicted or simulated as part of a model of system performance.A single-pump configuration with feedback has been found useful in reaching high brine osmotic pressures in continuous-flow operation. Enhanced brine concentration as well as an enhanced fraction of product/feed water recovery can be obtained by recycling a second-stage permeate of intermediate quality.For spaceflight recycling of hygiene water this permits lower pressure-vessel ratings, or higher water recovery, or both.


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    Title :

    High-Recovery Low-Pressure Reverse Osmosis


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Conference On Environmental Systems ; 1992



    Publication date :

    1992-07-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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