Water Supply Vol 1 No 5-6 pp 273–276 © IWA Publishing 2001
Monitoring membrane integrity using high sensitivity laser turbidimetry
A. Banerjee*, M. Lambertson**, J. Lozier*** and C. Colvin****
*Hach Company, 5600 Lindbergh Drive, Loveland, Colorado. E-mail: ashim@hach.com
**Hach Company, 5600 Lindbergh Drive, Loveland, Colorado. E-mail: ashim@hach.com
***CH2MHill, 1620 Fountainhead parkway, Suite 550, Tempe, AZ 85282. E-mail: jlozier@ch2m.com
****CH2MHill, 1620 Fountainhead parkway, Suite 550, Tempe, AZ 85282.
ABSTRACT
Membrane filtration plants for drinking water typically use pressure decay testing in conjunction with particle counting and turbidity to monitor membrane integrity. Pilot plants offer the capability of monitoring permeate quality with both intact and intentionally compromised membranes. We compare data from a particle counter, a pressure decay test and a laser turbidimeter on pilot plants from two different manufacturers of microfiltration membranes.
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