This powerpoint presentation begins by providing a brief overview of a pilot study of a desalination study at Santa Cruz, California, from March 2008 through April 2009.
Pilot-scale facilities treated up to 50 gpm and
demonstrated technology to meet regulatory
drinking water standards,
establish optimal design and operating
parameters, and
compare pretreatment and reverse osmosis (RO) alternatives. The pilot plant process diagram of 4
pretreatment trains and 4 RO trains is presented, along with RO systems, single stage configuration, two-stage LPRO/SWRO, projected energy use
before testing, water quality results -
chloride, boron and bromide, relevant regulatory standards, impact on use
for irrigation, and example of boron toxicity - mild and
advanced necrosis. Conclusions indicate that: single stage ISD: achieves best balance of water
quality and energy use (at 45-50% recovery);
two-pass system: recommended to reduce impact
on TTHM formation with free chlorine;
two-stage LPRO/SWRO
does not achieve boron regulation or bromide goal,
provides lower energy use at high recovery (55 %), and
may be feasible for lower boron source water
(e.g., to reduce size of intake and pretreatment). Includes figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 3.7 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 28 |
| Published : | 11/01/2009 |
