This powerpoint presentation begins by providing a brief overview of the San Diego County Water Authority (SDCWA) and the Twin Oaks Valley Water Treatment Plant that included:
$157M capital work delivered in under 30 months;
$6M annual operating contract; and, a
100 mgd advanced treatment process. It is an
environmentally friendly project characterized by the following:
Zero Liquid Discharge;
no coagulation in main treatment process;
onsite hypochlorite generation;
less vehicle traffic;
title-24 lighting; and,
small footprint compared to conventional treatment. Permitting of membrane process key issues are presented, including: the California Department of Public Health (CDPH) based some of the permitting requirements
of the membrane system on their interpretation of
the Membrane Filtration Guidance Manual;
key aspects included
higher removal requirements,
more conservative calculation of LRV,
additional full-scale and pilot scale testing to verify
pathogen risk and
virus removal. Presentation summary indicates the following:
CDPH adapted LT2ESWTR framework to permit
membrane process;
results are not vendor specific;
framework should be adopted with caution;
framework already includes conservatism; and,
adding more layers only increases cost with marginal
improvement on public health protection. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.7 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 28 |
| Published : | 11/01/2009 |
