Natural organic matter (NOM) present in drinking water sources consists of a complex mixture
of humic and fulvic acids, proteins, carbohydrates and polysaccharides. Identification of the
specific fraction causing membrane fouling is critical with respect to selecting appropriate pretreatment
prior to ultrafiltration (UF) and nanofiltration (NF). This research demonstrates that
biofiltration pretreatment has the potential to substantially improve membrane performance by
reducing the required transmembrane pressure (TMP) to achieve a preset flux. Seasonal impacts
on biofiltration performance are also reported. In practice, the addition of biofiltration prior to
UF will result in longer operating cycles between chemical cleanings, and therefore reduce
operational costs. Overall, biofiltration pretreatment appears to have the potential to be a viable
alternative to coagulation pretreatment for UF. Includes 9 references, tables, figure.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 810 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 11/01/2008 |
