Rural Water - Quarter 3, 2017 - 51

CASE STUDY

Installing Granular Activated
Carbon Today to Prevent
Regulatory Issues in the Future

i

Company: CalgonCarbon
Customer: Shelby Talladega WTP,
Shelby County, AL

In 2010, Shelby County Water
Services (SCWS) was planning for the
future. With new regulations on the horizon,
SCWS determined that the Talladega/Shelby
water treatment plant in Shelby County,
AL, needed more effective removal of
disinfection byproducts (DBPs). Specifically,
the treatment plant needed help complying
with the U.S. EPA's new Stage 2 Disinfection
Byproduct Rule (DBPR).
SCWS serves both retail and wholesale
customers. The active wholesale customers,
Alabaster, Pelham and Sterrett-Vandiver, sell
significant amounts of water from SCWS to
their customers. The number of SCWS retail
customers, primarily located in Westover,
Chelsea and the subdivisions of Eagle Point,
Greystone, Forrest Park, Forrest Lakes,
Mt. Laurel, Regent Park, Villas Belvedere
and Highland Village, grew from about
3,200 in 2001 to more than 10,500 in 2010.
Part of that increase was attributed to the
acquisition of customers from the former
Westover Water Authority, which merged
with SCWS in 2007.
SCWS gets water from Lay Lake on the
Coosa River and treats the water in two
facilities: Talladega/Shelby Water Treatment
Plant and Shelby County South Water
Treatment Plant. The Shelby County South
water treatment plant near Wilsonville is
owned and operated by Shelby County. The
South Plant began production of drinking
water treated with granular activated carbon
(GAC) for DBP removal in 2008.
Over the course of the following year,
SCWS considered GAC and ion exchange for
use at the Talladega/ Shelby plant to ensure

compliance with Stage 2 DBPR regulations.
Based on its analysis, the county concluded
that the cost and performance of a GAC
system would be similar to the other options,
assuming the carbon lasted at least one year
before requiring reactivation.
Another consideration in the analysis
was the location of the Talladega/Shelby
plant: the remote location and lack of septic
sewers favored a technology that resulted in
minimal waste. Waste from the plant flows
through a series of settlement lagoons and
eventually is discharged into the Coosa River.
These waste lagoons were not designed
to treat high levels of color, total dissolved
solids or salt, which can be typical of ion
exchange waste. Furthermore, the Alabama
Department of Environmental Management
indicated a concentrated waste discharge
would require special permits and significant
testing for compliance. For these reasons,
SCWS was drawn toward the GAC system,
RURAL WATER

51



Table of Contents for the Digital Edition of Rural Water - Quarter 3, 2017

From the President
Surviving Hurricanes
Emergency Preparedness
Indiana Teamwork During a Flood Emergency
Rates and Long-Term Sustainability
Technology: Ammonia – A Growing Problem with a Practical Solution
Emergency Management: Biological Wastewater Treatment Toxicity
Insurance: Commercial General Liability Coverage Basics
A Day in the Life of a Circuit Rider
Regulatory Update
Case Study: Installing Granular Activated Carbon Today to Prevent Regulatory Issues in the Future
Cleared for Takeoff
Up the Creek: Birdfeeder Politics
Index to Advertisers/ Advertisers.com
From the CEO
Rural Water - Quarter 3, 2017 - intro
Rural Water - Quarter 3, 2017 - cover1
Rural Water - Quarter 3, 2017 - cover2
Rural Water - Quarter 3, 2017 - 3
Rural Water - Quarter 3, 2017 - 4
Rural Water - Quarter 3, 2017 - 5
Rural Water - Quarter 3, 2017 - 6
Rural Water - Quarter 3, 2017 - 7
Rural Water - Quarter 3, 2017 - 8
Rural Water - Quarter 3, 2017 - 9
Rural Water - Quarter 3, 2017 - 10
Rural Water - Quarter 3, 2017 - From the President
Rural Water - Quarter 3, 2017 - Surviving Hurricanes
Rural Water - Quarter 3, 2017 - 13
Rural Water - Quarter 3, 2017 - 14
Rural Water - Quarter 3, 2017 - 15
Rural Water - Quarter 3, 2017 - 16
Rural Water - Quarter 3, 2017 - 17
Rural Water - Quarter 3, 2017 - Emergency Preparedness
Rural Water - Quarter 3, 2017 - 19
Rural Water - Quarter 3, 2017 - 20
Rural Water - Quarter 3, 2017 - 21
Rural Water - Quarter 3, 2017 - 22
Rural Water - Quarter 3, 2017 - 23
Rural Water - Quarter 3, 2017 - 24
Rural Water - Quarter 3, 2017 - 25
Rural Water - Quarter 3, 2017 - 26
Rural Water - Quarter 3, 2017 - Indiana Teamwork During a Flood Emergency
Rural Water - Quarter 3, 2017 - 28
Rural Water - Quarter 3, 2017 - 29
Rural Water - Quarter 3, 2017 - 30
Rural Water - Quarter 3, 2017 - Rates and Long-Term Sustainability
Rural Water - Quarter 3, 2017 - 32
Rural Water - Quarter 3, 2017 - 33
Rural Water - Quarter 3, 2017 - 34
Rural Water - Quarter 3, 2017 - Technology: Ammonia – A Growing Problem with a Practical Solution
Rural Water - Quarter 3, 2017 - 36
Rural Water - Quarter 3, 2017 - 37
Rural Water - Quarter 3, 2017 - 38
Rural Water - Quarter 3, 2017 - Emergency Management: Biological Wastewater Treatment Toxicity
Rural Water - Quarter 3, 2017 - 40
Rural Water - Quarter 3, 2017 - 41
Rural Water - Quarter 3, 2017 - 42
Rural Water - Quarter 3, 2017 - Insurance: Commercial General Liability Coverage Basics
Rural Water - Quarter 3, 2017 - 44
Rural Water - Quarter 3, 2017 - A Day in the Life of a Circuit Rider
Rural Water - Quarter 3, 2017 - 46
Rural Water - Quarter 3, 2017 - Regulatory Update
Rural Water - Quarter 3, 2017 - 48
Rural Water - Quarter 3, 2017 - 49
Rural Water - Quarter 3, 2017 - 50
Rural Water - Quarter 3, 2017 - Case Study: Installing Granular Activated Carbon Today to Prevent Regulatory Issues in the Future
Rural Water - Quarter 3, 2017 - 52
Rural Water - Quarter 3, 2017 - Cleared for Takeoff
Rural Water - Quarter 3, 2017 - 54
Rural Water - Quarter 3, 2017 - Up the Creek: Birdfeeder Politics
Rural Water - Quarter 3, 2017 - 56
Rural Water - Quarter 3, 2017 - 57
Rural Water - Quarter 3, 2017 - Index to Advertisers/ Advertisers.com
Rural Water - Quarter 3, 2017 - 59
Rural Water - Quarter 3, 2017 - 60
Rural Water - Quarter 3, 2017 - From the CEO
Rural Water - Quarter 3, 2017 - 62
Rural Water - Quarter 3, 2017 - cover3
Rural Water - Quarter 3, 2017 - cover4
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