Water Resource Study and Design of New
Regional Water Plant
Santee Cooper Regional Water System
Upon successful implementation of the Lake Moultrie Regional Water System in
1992, HUA and Santee Cooper extended their partnership to begin an evaluation
for a second regional system on another of the Santee Cooper lakes, Lake
Marion. HUA completed a regional water study to evaluate the feasibility of a
new large-scale, surface water treatment plant located on Lake Marion supplying
water to regional participants. Six counties near the lake formed a steering
committee to work with Santee Cooper in the development of this project.
Key Elements
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Pilot Study to evaluate Micro and Ultrafiltration membranes and DAF.
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Design of 8 MGD (expandable to 18 MGD) membrane filtration treatment plant
utilizing coagulation and submerged membranes (Zenon) follow by GAC.
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Project currently under review by South Carolina Department of Health and
Environmental Control and USACOE
Evaluation of Treatment Technologies
HUA, in coordination with Santee Cooper, evaluated five treatment technologies
(three on-site, two resulting from previous studies) for their ability to
provide high quality water and to determine the operation and maintenance costs
associated with each treatment system. The decision was made to evaluate
membrane technologies as well as conventional treatment technologies that are
available and currently being utilized in the state of South Carolina. The
final selection of submerged ultrafiltration membranes followed by GAC was
based on the ability to perform organic removal through coagulation, provide a
positive barrier to cryptosporidium with ultrafiltration membranes, and provide
final organic removal through GAC.
Water Treatment Plant Design
HUA is currently in the design phase for the Lake Marion Water Treatment Plant.
Zenon Zeeweed submerged ultrafiltration membrane filter will be used in the
design of the plant. This unit is initially more expensive than other more
conventional units; however, it will result in decreased operation and
maintenance costs and enhanced treatment capabilities, which are of particular
importance to Santee Cooper. The implementation of this particular technology
will be the first of its kind employed as a primary water treatment unit in the
State of South Carolina. The facility is being designed for expansions up to 18
MGD in the future.
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