Energy Recovery Introduces Device for Desalination

Energy Recovery, Inc., a leader in the design and development of energy recovery devices for desalination, has introduced the PX-300 device to its PX Pressure Exchanger® (PX) technology portfolio.

ERI’s 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 percent efficiency.

According to a July 30 press release, the PX-300 device is the highest-capacity energy recovery device offered by ERI. It handles flow rates of 300 gallons per minute (68 m3/hour) per device. The modular, standardized design allows the PX-300 to be used in the world’s largest desalination plants.

The devices improve the energy efficiency of seawater reverse osmosis (SWRO) by up to 60 percent. More than 6,700 devices are currently deployed or under contract to be installed at desalination plants across the globe.

“As SWRO desalination continues to gain global acceptance to address worldwide water shortages, continuous technology advances are required to meet energy efficiency and plant reliability requirements,” said Richard Stover, Ph.D., chief technical officer at ERI. “ERI is leading a global effort to make seawater desalination affordable."

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