This powerpoint presentation had the following technical objectives:
utilization of a fluidized bed bioreactor (FBR) treatment system to
treat 50 gpm of perchlorate laden water into potable water;
complete treatment system consists of a fluidized bed bioreactor,
aeration vessel, multimedia filter, LGAC unit, and a UV system; and,
a year-long testing period was conducted that included
self-seeding of system,
downstream equipment effectiveness,
challenge experiments involving feed and electrical system shutdowns,
on-line nitrate and perchlorate analyzer capabilities,
chlorination and UV disinfection studies, and
perchlorate spiking study. The technical approach is presented, along with technical progress, a spiking study, and operating costs. Presentation conclusions indicate that:
nitrate and perchlorate removed by indigenous bacteria in FBR
within 27 days of start-up;
downstream equipment produced effluent water with oxygen >7.0
mg/L, turbidity <0.3 mg/L, TTHM <80 µg/L, HAA5 <60 µg/L, no
E.Coli production;
challenge experiments demonstrated rebound performance of the
FBR as low as 2 hours (no more than 24 hours);
nitrate analyzers and perchlorate analyzer were effective, a back-up nitrate analyzer is recommended;
disinfection studies demonstrated,
CT of 4 and a UV contact time of 6 seconds a log 3+ removal of HPC;
spiking study of 1000 µg/L of perchlorate, treatment to below California State MCL of 6 µg/L of perchlorate, and
all other Title 22 requirements met for drinking water. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 2.9 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 27 |
| Published : | 11/01/2008 |
