IWA Publishing
 IWA Publishing Journals   Subscriptions   Authors   Users   Librarians   FAQs 

Water Supply Vol 3 No 5 pp 125–132 © IWA Publishing 2003

Enhanced pre-coat engineering (EPCE®) for micro- and ultrafiltration: steps to full-scale application

G. Galjaard*, J.C. Kruithof**, H. Scheerman***, J. Verdouw**** and J.C. Schippers*****

*Kiwa N.V., Water Research, P.O. Box 1072, 3430 BB Nieuwegein, The Netherlands (E-mail: gilbert.galjaard@kiwa.nl)
**NV PWN Water Supply Company North Holland, P.O. Box 2113, 1990 AC Velserbroek, The Netherlands (E-mail: joop.kruithof@pwn.nl)
***NV PWN Water Supply Company North Holland, P.O. Box 2113, 1990 AC Velserbroek, The Netherlands
****Kiwa N.V., Water Research, P.O. Box 1072, 3430 BB Nieuwegein, The Netherlands
*****Kiwa N.V., Water Research, P.O. Box 1072, 3430 BB Nieuwegein, The Netherlands. International Institute for Infrastructure, Hydraulics and Environmental Engineering, IHE Delft, P.O. Box 3015, 2601DA Delft, The Netherlands


ABSTRACT
Ultrafiltration of surface water without pre-treatment frequently suffers from high fouling rates and irreversible fouling. Enhanced pre-coat engineering (EPCE) has been developed with the aim to enable ultrafiltration plants to treat surface water directly at high and stable flux rates. In this study in-line coagulation with ferric chloride and polyaluminium chloride and EPCE are compared on pilot scale using capillary membranes with IJssel Lake water as feed water. The in-line coagulation experiments resulted in relatively low flux rates and irreversible fouling, whereas EPCE enabled us to achieve a flux rate of 100 l/(h.m2) and a dosage of less than 25 g/m3. However, a couple of technical questions need to be answered before fullscale application can be implemented with all types of ultrafiltration systems.

Full article (PDF Format)


eProduct: Buy this article for £24.00 (IWA MEMBER PRICE: £18.00)
All prices include VAT. For customers where VAT should not be applied, the VAT amount will be removed upon payment