The effect of coagulation pH and coagulant type on ultrafiltration (UF) membrane
fouling, total organic carbon (TOC) removal, and permeate metals residuals was
examined on bench scale UF membranes. Results indicate an important relationship
between fouling rate and pH. For ferric chloride and aluminum hydroxide higher pH
values (~8) give much lower membrane fouling rates compared to pH values of 5.5 and
6.2. However, the opposite trend is observed for TOC removals, i.e. higher removals
were seen at lower pH values. By adjusting pH to values that have been used in
conventional processes to achieve optimal settling and TOC removal, high membrane
fouling rates may occur. Results from this research can be used as preliminary data to
help explore avenues for minimizing fouling rates at full-scale plants given a specific
TOC removal target. Includes 9 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 340 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 03/01/2007 |
