Bench-scale stirred cell tests are performed with various feed waters (WWTP
effluents, effluent isolates) on four microfiltration (MF) and ultrafiltration (UF) membranes. Filtration tests are carried
out at constant transmembrane pressure, i.e. the flux decline is monitored over time.
The resulting flux data is used for modeling. The flux data collected during membrane
filtration experiments can be examined for the prevailing fouling mechanism by
replotting the data using characteristic coordinates, e.g. a linear plot of time/volume
versus volume is found in the case of cake formation. The flux decline observed
during stirred cell experiments with municipal wastewater through ultrafiltration
membranes can be explained by the cake formation model. Microfiltration
membranes with pore sizes of 0.1-0.22 µm, on the other hand, are fouled by more
complex mechanisms. Neither of the classical fouling models can explain the
observed flux decline behavior alone. Thus, a combination of several fouling
mechanisms can therefore be inferred.
Includes 5 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 370 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 9 |
| Published : | 03/01/2005 |
