A systematic investigation of the role of feed water recovery in combined (colloidal plus
natural organic matter (NOM)) fouling of nanofiltration (NF) membranes is reported in this paper. A brief
mathematical expression relating NF product water recovery to feed water concentration
factors enables both qualitative and quantitative analyses of membrane fouling, which can be
related to full-scale NF systems. Permeate disposal fouling experiments were carried out
with a thin-film composite NF membrane and a bench-scale, crossflow membrane unit at
various combinations of solution chemistries and hydrodynamic conditions. Results
demonstrate that the effects of ionic strength, divalent ions (Ca2+), and initial flux on the
fouling behavior are quite different in combined (colloids plus NOM) fouling compared to
individual colloid and NOM fouling. Includes 8 references, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 380 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 12 |
| Published : | 03/05/2003 |
