Released on: July 8, 2008, 8:32 pm

Press Release Author: Audrey Bold

Industry: Environment

Press Release Summary: The PX260 is ERI's largest commercially available energy
recovery device and the new flagship of the PX Pressure Exchanger® family of
products. It handles brine flow rates of 50 to 59 m 3 /hr (220 to 260 gpm) - nearly
20% greater capacity than ERI's former largest device.

Press Release Body: San Leandro, Calif., December 19, 2007, Energy Recovery, Inc.
(ERI®) is proud to announce the newest additions to the PX® Technology product line:
the PX260 and the PX30S.

The PX260 is ERI's largest commercially available energy recovery device and the new
flagship of the PX Pressure Exchanger® family of products. It handles brine flow
rates of 50 to 59 m 3 /hr (220 to 260 gpm) - nearly 20% greater capacity than ERI's
former largest device. Arrays of PX260 devices serve reverse osmosis (RO) trains
with permeate flows from 850 cubic meters per day (224 thousand US gallons) up to
the largest being designed: 25,000 cubic meters per day (6.6 million US gallons) and
more. Similar to PX180 and PX220 devices, the PX260 is designed to provide up to 98%
efficiency. However, with its higher device capacity, fewer units are needed on a
manifold. The PX260 has been successfully beta tested for over two years and is in
full production.

The new PX30S Pressure Exchanger device is ERI's smallest energy recovery unit,
designed to handle brine flows from 4.5 to 6.8 m 3 /hr (20 to 30 gpm) for RO plants
with permeate capacities of 100 to 360 cubic meters per day (26 to 95 thousand US
gallons/day). It operates with efficiencies over 96% and with less than 3% mixing at
the membrane feed. This performance is similar to larger PX devices, making the
PX30S ideal for pilot plants as well as mobile marine units. In addition, it
contains new features that allow it to operate with relaxed process flow controls.
The PX30S is fully tested and in production.

Similar to other PX products, at the core of each PX260 and PX30S unit is a tough,
engineered ceramic cartridge with only one moving part that automatically adjusts to
process flow variations. Efficiency and mixing are the same at all flows. The simple
elegant design requires no artificial intelligence or adaptive control schemes to
operate. Arrays of devices have built in redundancy, operating in parallel to
service larger systems.

With this latest product introduction, ERI continues to offer the simplest, most
reliable approach to isobaric energy recovery available today. Currently, ERI's
patented PX technology is making cost efficient desalination of seawater possible in
over 30 countries worldwide, covering five continents.

For specific performance information, please view the technical documentation on
ERI's website: www.energyrecovery.com. For sales or technical inquiries, please
contact a member of the ERI team by email at sales@energyrecovery. com or by phone
at +1 (510) 4837370.

About ERI®
Energy Recovery, Inc. (ERI) is the global leader in high efficiency energy recovery
products and technology. Our PX Pressure Exchanger® (PX) energy recovery device is
making desalination affordable. The PX device is rotary positive displacement pump
that recovers energy from the high pressure waste stream of SWRO desalination
systems at up to 98% efficiency with no downtime or scheduled maintenance. Since its
introduction in 1997, PX technology has emerged as the industry standard solution
for SWRO desalination. There are currently over 6,000 PX units installed or
contracted in SWRO plants worldwide, significantly reducing the cost to produce over
5.2 million cubic meters (1.4 billion US gallons) of fresh water per day, and saving
customers an estimated 500 MW of energy or over $350 million a year in operating
costs.

ERI's headquarters is situated in the San Francisco Bay Area; San Leandro,
California USA with offices in every continent of the globe including: Sunrise,
Florida; Madrid, Spain; Abu Dhabi, UAE; Shanghai, China; and service representatives
in Sydney, Australia.

For more information, please go to www.energyrecovery.com.



Web Site: http://www.energyrecovery.com

Contact Details: Audrey Bold
North America
1908 Doolittle Dr
San Leandro, CA 94577
Phone: +1 (510) 483-7370
Fax: +1 (510) 483-7371
Email: sales@energy-recovery.com