AWWA MTC53828

Integrated membrane system (IMS) productivity and water quality was evaluated using a newly developed resistancemodel. Models were developed using laboratory data and verified using independently collected field data. Theseresults demonstrated that field scale IMS operation could be simulated using field scale hydraulic and water qualitydata with models developed from laboratory scale systems. Laboratory productivity was modeled using a modifiedform of Darcy's Law. This model was based on hydraulic resistance due to cumulative foulant mass loading.Additive resistance was assumed and related to accumulation of organic, biological, and particle foulants. The modelalso accounted for decreasing membrane film resistance resulting from combined chlorine loading. Statisticallysignificant models were obtained for flat-sheet tests conducted with composite thin-film (CTF) nanofilters (NFs). Forone of these nanofilters (LFC1), the model indicated fouling due to organic, biological and particle accumulation.The model also indicated degradation due to combined chlorine. Model verification was performed using pilot andfull-scale data. The LFC1 flat-sheet model using laboratory data was able to simulate field scale IMS productivitydecline. Includes 13 references, tables, figures.

Product Details

Edition:

Vol. - No.

Published:

05/01/2001

Number of Pages:

19

File Size:

1 file , 350 KB