AWWA MTC61150

This is an extended abstract only of a project co-funded by American Water Works Association Research Foundation, Project #2945, that involved determining the rejection of a large number of trace organics bydifferent nanofiltration (NF) membranes on lab and bench scale. It was identified thatmembrane properties as well as the physico-chemical properties of the compounds have alarge influence on the removal efficiency. Furthermore, scale up from bench scale to fullscale will result in a lower overall plant rejection because of the concentration effect athigh recovery. The experimental data were used to develop a model including masstransfer properties to predict full scale rejections. Mass transfer properties were related tophysical properties (diffusivity, molecular weight, molecular volume) as well as moregeneral water properties as pH. The results show that many compounds can be removedto a large extent using NF, but some compounds require another treatment step. Includes table, figures.

Product Details

Edition:

Vol. - No.

Published:

03/01/2005

Number of Pages:

3

File Size:

1 file , 320 KB