In response to extended drought conditions and shrinking source water supply, the City of
Wichita Falls has begun a capital improvements program to build a new dual-stage
membrane (microfiltration and reverse osmosis) water treatment plant necessary to develop
an existing surface water supply that was historically considered unfit as a public water
supply.
The use of membranes is expanding towards the treatment of more complex source waters
featuring high levels of dissolved contaminants (DOC, color, taste and odor causing
substances) and high levels of particulate material (turbidity, microorganisms, suspended
solids). When membranes are considered for these more difficult to treat waters, the choice
of direct filtration must be evaluated against integration of a preclarification unit process.
This paper presents the pilot evaluation process and data used to select a pretreatment
approach used to design the new 10 MGD dual stage membrane surface water plant for the
City of Wichita Falls, Texas. The performance of the membrane pilot system is discussed
for both scenarios: in direct dosing/filtration and in preclarification. Design of the core
system equipment and calculation tools developed during the design of the system is also
presented. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 360 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 03/05/2003 |
