This powerpoint presentation begins by providing background information on the issue of algal toxins in surface water treated for
potable consumption. The characterization of raw water is presented, along with
treatability testing including
Ozone and Ozone/Peroxide, UV and UV/Peroxide,
GAC and PAC,
Biologically Active Filtration, and
NF and RO Membranes. Presentation summary includes the following:
raw water toxin
concentrations highly
variable; activated carbon can
provide about 50%
removal at modest doses
(10 mg/L PAC dose and
5-min EBCT GAC bed);
ozone very effective
(highly pH dependent);
UV only effective at high
doses
(higher than typical water
treatment dosages);
Biological Treatment -- 30% removal,
not a preferred mode of
treatment; and,
membrane treatment
provided very effective
treatment --
95% removal under most
circumstances. Includes figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.3 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 33 |
| Published : | 11/01/2008 |
