Company signs second contract for device that makes UHPRO more efficient

Feb. 4, 2021

Energy Recovery recently announced its second contract award for the company’s new Ultra PX™ energy recovery device, which will support the industrial wastewater treatment operations of a natural gas plant in the Sichuan Province of China.

Energy Recovery previously announced its first Ultra PX contract to support the operations of a chemical manufacturer in central India. That project has shipped and is scheduled for commissioning by the second quarter of 2021. 

Energy Recovery’s Ultra PX is designed to dramatically reduce the energy needs, costs and environmental impacts associated with treating industrial wastewater in Ultra High-Pressure Reverse Osmosis (UHPRO) applications. The Ultra PX recovers up to 60% of wasted energy when applied to UHPRO systems.

UHPRO is increasingly used to achieve Zero Liquid Discharge (ZLD) and Minimal Liquid Discharge (MLD) industrial wastewater treatment requirements, which seek to eliminate or minimize wastewater discharge by purifying and recycling heavily concentrated industrial waste fluids. Many governments — particularly in Asia — are focused on improving water sustainability, mandating ZLD or MLD requirements for industrial wastewater treatment. Energy Recovery’s Ultra PX can enable the accelerated adoption of UHPRO in the growing ZLD and MLD market as it develops globally and in Asia.

“As governments across the globe increase their focus on water conservation and protecting water quality, they are establishing more stringent requirements for industrial wastewater treatment,” said Robert Mao, president and chief executive officer of Energy Recovery. “As the need for industrial wastewater treatment grows, the energy efficiency of these operations is becoming increasingly important. With the Ultra PX, our core pressure exchanger technology is tackling water quality and scarcity issues in a new way, while providing significant cost and energy usage reductions to our customers in this exciting new market.”

In traditional ZLD and MLD configurations, up to 50% of costs typically come from cost- and energy-intensive thermal treatments. ZLD and MLD systems that adopt UHPRO can potentially realize significant cost savings by lowering the energy intensity of treating industrial waste fluids. Energy Recovery’s Ultra PX enhances the efficiency and affordability of the UHPRO process versus a UHPRO system with no energy recovery device.

About Energy Recovery

For more than 20 years, Energy Recovery Inc. has created technologies that solve challenges in industrial fluid-flow markets. They design and manufacture solutions that reduce waste, improve operational efficiencies, and lower the production costs of clean water and oil and gas. Headquartered in the San Francisco Bay Area, Energy Recovery has manufacturing, research, and development facilities across California and Texas. In addition, our worldwide sales and technical service organization provides on-site support for our line of water solutions. For more information, visit

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