AWWA MTC64559

This slide presentation outlines a study on the detection of compromise in the barrier layer of membranes or in the membrane housing. Membrane integrity test methods included: Direct Tests conducted on the module; Pressure-Decay Tests, Diffusive Air Flow etc.; Indirect Tests conducted on filtrate; and, Particle Counters, Particle Monitors, Turbidimetry Challenge Tests- SIM. Proposed Technology Concept/Characteristics included: Separable - should allow pre-concentration, improves signal/noise ratio; Identifiable/Markable, should confer specificity; Detectable at low concentrations, sensitivity. Detection methods included: Magnetic Relaxometry; T2 relaxation times; 600 MHz NMR spectrometer (Varian); and, Carl-Purcell-Meiboom-Gill sequence. Includes table, figures.