Optimized for ZLD and MLD

Maximizing energy savings in ultra high-pressure applications

Energy Recovery’s U Series energy recovery devices for ultra high-pressure reverse osmosis (UHPRO) wastewater treatment dramatically reduces the energy needs, costs, and emissions associated with treating wastewater discharge. By using cutting-edge energy recovery technology to reduce energy use in UHPRO, these devices make treating wastewater less costly. The PX U Series is tailored for UHPRO applications, can handle higher brine concentrations, and operates at pressures of up to 120 bar (1,740 psi). Its modular design makes it ideal for small or large wastewater treatment plants.

How it works


Potential recovery, in all flow conditions, of otherwise wasted energy

25 Years

Designed to last with no scheduled maintenance


Peak efficiency of U Series

1740 PSI

Maximum operating pressure of U Series

Typically, in plants using ZLD or MLD for wastewater treatment, 50% of the cost is driven by the last 10% of the process due to the use of high-cost treatment technologies such as mechanical vapor compression (MVC), forward osmosis (FO), and electrodialysis (ED). UHPRO moves the cost of those technologies further downstream. The PX U Series further reduces the energy waste of the UHPRO process by returning pressure energy to the system, ultimately reducing overall energy costs.

Ultra High-Pressure PX


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Check out the latest information on upcoming conferences, webinars, meetings, and other events that we’re involved with.

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Wastewater / Desalination

IE Expo China

Shanghai, China

IE expo China is a leading trade fair for environmental technologies in Asia, and the second largest in the...

Desalination / Wastewater

EDS Euromed Congress

Sharm El Sheikh, Egypt

Energy Recovery experts will be at European Desalination Society’s 2024 Euromed Conference. Booth C6...

Desalination / Wastewater

IFAT Munich

Munich, Germany

Energy Recovery will be at IFAT Munich 2024, the world’s largest trade show for environmental...

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