Full Description

The primary goal of this AwwaRF funded research was to develop an understanding of the interactionsbetween water quality, pretreatment chemicals, membrane materials, and membrane configurations inlight of regulatory issues. Various membrane configurations and materials were tested at pilot-scale withvarious water qualities and operating conditions. Specific objectives of the pilot-scale were to evaluatethe effects of pretreatment chemicals and processes on the performance of pilot-scale membrane systems,employing different membrane materials, configurations and varying water qualities. Pilot studies wereconducted with USFilter Memcor continuous microfiltration (CMF) pilot units at the Atlanta FultonCounty Water Treatment Plant, GA (AFCWTP, drinking water facility) utilizing clarified, pre-clarified,coagulated and raw waters as feed water. The CMF unit was equipped with 0.1 m PVDF hollow fibermembranes. One indicator of system performance that was used was the rate of decline of temperaturecorrected specific flux under each of the test conditions. Membrane filtration cycle was evaluated throughquantification of membrane flux decline rates. The results obtained show a strong decline in themembrane performance when the water quality deteriorates. These effects are more pronounced whileusing coagulated/raw water. The pressure driven CMF pilot unit was also tested with the new "Vanilla"PVDF membrane modules. Results from these pilot studies with waters of varying quality are comparedand presented. Includes 7 references, tables, figures.

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Edition: Vol. - No. Published: 03/01/2005 Number of Pages: 20File Size: 1 file , 1.5 MB