Energy Recovery, Inc. PX Devices to Be Implemented at Large Desalination Plant in Tenes, Algeria

Industry-Leading Energy Recovery Devices Now Help Deliver More Than 1.6 Million
Cubic Meters of Affordable, Clean Water Per Day Throughout Algeria
SAN LEANDRO, Calif.--(Business Wire)--
Energy Recovery, Inc. (NASDAQ: ERII), a leader in the design and development of
energy recovery devices for desalination, today announced that its PX Pressure
Exchanger (PX) devices will be implemented in the seawater reverse osmosis
(SWRO) desalination plant in Tenes, Algeria. To be constructed by Befesa, the
plant will produce 200,000 m3 (52.8 million gallons) of water per day. With this
contract, Energy Recovery`s PX devices are now helping to deliver more than 1.6
million m3
(422.7 million gallons) of affordable, fresh water per day to millions of
people throughout Algeria.

"Algeria has established itself as a global leader when it comes to desalination
as the solution to increasing water scarcity, and Befesa is honored to help
deliver more than 40 percent of the nation`s water demands through our SWRO
plants," said Carlos Cosin, international director with Befesa. "However, in
order to make desalination a long-term solution in Algeria or elsewhere, the
water produced must be affordable. That is why we continue to work with Energy
Recovery, implementing its leading-edge PX devices to significantly reduce the
energy costs of desalination. We have worked with Energy Recovery on five
mega-projects globally - four in Algeria - and we look forward to continuing our
mutually successful partnership to meet the increasing worldwide demand for SWRO
desalination."

The Tenes facility is the 10th desalination plant in Algeria to include the PX
technology, as devices are currently operating or contracted at plants in
Algiers, Skikda, Mostaganem and other locations throughout the country. With the
help of Energy Recovery, the Tenes desalination plant is estimated to save 17
megawatts of energy.

"The Tenes plant is the 10th in Algeria to include PX devices, validating the
technology as the highest-performing, most reliable isobaric energy recovery
device in the region," said Borja Blanco, senior vice president of Energy
Recovery, Inc. "Algeria continues to turn to SWRO desalination to address the
mounting water shortages across the county, and serves as the blueprint for any
other nation considering desalination projects. We are grateful to be included
in the Tenes and other facilities throughout Algeria, and look forward to
helping deliver affordable, fresh water to its citizens for years to come."

Energy Recovery's PX devices reduce the energy consumption of SWRO systems by up
to 60 percent, making desalination a cost-effective solution for clean water
supply. PX devices also reduce the carbon footprint of desalination, saving more
than 750 megawatts of energy and reducing CO2 emissions by more than 4.6 million
tons per year worldwide. More than 7,000 PX devices are currently deployed or
under contract to be installed at desalination plants across the globe. For more
information about Energy Recovery's PX Pressure Exchanger technology, visit
http://www.energyrecovery.com or send an email to info@energyrecovery.com.

About ERI

Energy Recovery, Inc. (NASDAQ:ERII) designs and develops energy recovery devices
that help make desalination affordable by significantly reducing energy
consumption. ERI`s PX Pressure Exchanger (PX) device is a rotary positive
displacement pump that recovers energy from the high pressure reject stream of
seawater reverse osmosis systems at up to 98% efficiency. The company is
headquartered in the San Francisco Bay Area with offices in key desalination
centers worldwide, including Madrid, Shanghai, Florida and the United Arab
Emirates. For more information on ERI and PX technology, please visit
www.energyrecovery.com.

Energy Recovery, Inc.
Audrey Bold, +1-510-746-2529
abold@energyrecovery.com
or
Schwartz Communications, Inc.
Dan Borgasano, +1-781-684-6660
ERI@schwartz-pr.com

Copyright Business Wire 2009