Case Study
Pall Aria™ Water System Helps Bring Renewable Water
Supply to Castle Rock, Colorado
Overview
The installation of a new water treatment
system at the Plum Creek Water Purification
facility in Castle Rock, Colo. is enabling the
town to treat and deliver renewable surface
water to residents and businesses. As part of
the facility, which opened in June 2013, the Pall
Aria™ system is a key component in a specially
designed treatment process the Colorado town
is using to treat renewable surface water from
alluvial wells near East Plum Creek.
The Challenge:
Transition Non-renewable Water
to Renewable Supply
Under the Safe Drinking Water Act, the
United States Environmental Protection
Agency (USEPA ) sets legal limits on the
levels of certain contaminants in drinking
water. These limits reflect both the level which
protects human health and the level which
water systems can achieve, using the best
available technology.
The challenges the Town of Castle Rock
faced were to transition from non-renewable
water sources to a percentage of renewable
water supply, move to minimal operator
attention and maintenance for the system,
and to also reduce chemical consumption.
“Reducing or eliminating chemicals reduces
the production of sludge and the need for its
disposal” says Bill Peretti with Denver-based
Water Control Corp., the local manufacturer’s
rep for Pall Corp. “And of course, it reduces
chemical cost and the need for onsite
storage and handling.”
Oxidized metals are removed in the
pretreatment process, which includes a
greensand filtration system. Any remaining
iron and manganese is removed through
Pall’s microfiltration membranes. However, a
major objective of the new facility’s design is
to maximize system efficiency by minimizing
membrane fouling from precipitated metals.
Dissolved metals, primarily iron and
manganese, are naturally present in the
tributary water Castle Rock is pumping to
Plum Creek Water Purification Facility.
Castle Rock, Colorado Plum Creek Water Facility
The Solution
Pall’s systems with Microza* membrane
modules were selected by the Town of
Castle Rock for its new Plum Creek Water
Purification Facility. The polymeric
microfiltration membranes provide protection
against microbial contamination, while also
removing organic and colloidal contaminants.
The system yields other benefits to water
providers and the overall treatment process,
as well.
Benefits
Featuring a current treatment capacity of up
to 4 million gallons per day (MGD), the Pall
Aria™ system, along with other treatment
facility components, is expandable to 12
MGD, which will help enable the town to
meet future demand.
“The Pall Aria water treatment system is
part of a process which enables the town
of Castle Rock, Colo. to transition from nonrenewable water sources to a renewable
supply,” said Walt Schwarz, P.E., Town of
Castle Rock Utilities project manager. “This
plant represents an important step toward
our goal of 75-percent renewable water.
The Pall system gives us the flexibility to
accommodate our growing community and
accelerate our efforts as we pursue our
long-term water goals.”
Castle Rock's Pall Aria system produces and delivers renewable
water in a small footprint.
* Microza is a trademark of Asahi Kasei Corporation, Ltd.
Photos courtesy and Copyright © 2014 Castle Rock Water and
Mark Simms Photographics.
With the opening of this facility, the town has
not only moved closer to realizing its stated
renewable water goal, but it also expects to
save on total water purification costs.
Water Processing
Visit us on the Web at www.pall.com
25 Harbor Park Drive
Port Washington, NY 11050
+1 516 801 9906
telephone
+1 888 428 5597
toll free US
Pall Corporation has offices and plants throughout the world. For Pall representatives
in your area, please go to www.pall.com/contact
Portsmouth-UK
+44 (0)23 9230 2374 telephone
+44 (0)23 9230 2509 fax
processuk@pall.com
Because of technological developments related to the products, systems, and/or
services described herein, the data and procedures are subject to change without
notice. Please consult your Pall representative or visit www.pall.com to verify that
this information remains valid.
© Copyright 2014, Pall Corporation. Pall,
, and Aria are trademarks of Pall Corporation.
® Indicates a trademark registered in the USA. Filtration. Separation. Solution. and BETTER
LIVES. BETTER PLANET. are service marks of Pall Corporation.
WPCRPCCS
Produced in the USA
September 2014