Comparison of NF/RO membrane performance in integrated membrane systems

    Authors

    M. M. Nederlof; J. C. Kruithof; J. S. Taylor; D. van der Kooij;J. C. Schippers

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Desalination

    Keywords

    nanofiltration; reverse osmosis; fouling; scaling; productivity; integrated membrane system; costs; Engineering, Chemical; Water Resources

    Abstract

    Within the framework of the project 'Integrated multi-objective membrane systems for control of microbials and DBP precursors, funded by AWWARF and USEPA, four integrated membrane systems (IMSs) for surface water treatment were investigated. The identified IMSs are based on pretreatments including slow sand filtration, bank filtration, coagulation-sedimentation-rap id filtration (CSF) and ultrafiltration respectively. The IMSs were tested on three locations in the US and three locations in The Netherlands. One of the primary objectives of the project was to compare membrane performance, a conventional NF system applied to ground water was used as a reference. Membrane performance was studied by normalising process data towards the mass transfer coefficient (MTC) and normalised feed channel pressure drop (NPD). Results show that a soil passage is to be preferred, especially when the water can be extracted under anaerobic conditions; such an IMS leads to a low cleaning frequency at low costs. When soil passage is not possible due to local circumstances, ground water conditions can be approximated by slow sand filtration after a CSF pretreatment, Since slow sand filtration is a space consuming technique, an IMS was investigated based on ultrafiltration after CSF pretreatment. After optimization of both CSF pretreatment and ultrafiltration no significant fouling of the RO membranes was observed.

    Journal Title

    Desalination

    Volume

    131

    Issue/Number

    1-3

    Publication Date

    1-1-2000

    Document Type

    Article; Proceedings Paper

    Language

    English

    First Page

    257

    Last Page

    269

    WOS Identifier

    WOS:000166134600024

    ISSN

    0011-9164

    Share

    COinS