Brackish Water RO Systems
Brackish water reverse osmosis (BWRO) systems are increasingly critical for treating challenging water sources in industrial and municipal operations. These systems demand high energy input, driving up operational costs—especially at scale. Energy Recovery’s PX® Pressure Exchanger® technology delivers a high-efficiency solution, significantly reducing energy consumption and improving cost-effectiveness in brackish water desalination.
Whether treating produced water, surface water, inland brackish groundwater, or industrial wastewater streams, PX technology enables efficient, sustainable operations—even under fluctuating feedwater conditions.
Boost performance and cut costs in brackish water treatment.
Benefits
High Efficiency, Even at Lower Pressures
PX® technology delivers up to 98% energy recovery, driving meaningful energy savings and improved performance.
Lower OPEX at Any Scale
By reducing energy consumption and wear on pumps, PX devices lower operating expenses across both large and decentralized BWRO installations.
Built-in Flexibility
Designed to perform under variable flow rates and salinity levels, our solutions provide stable, efficient operation—even as feedwater conditions fluctuate.
Durable, Low-Maintenance Design
With no delicate or complex moving parts, PX devices are built for unmatched longevity and reliability—keeping operations running smoothly with minimal intervention.
Support for Sustainability and Compliance
Reducing energy consumption helps lower emissions and meet environmental standards, without compromising on throughput or water quality.
Featured Products
Low-Pressure PX
Ideal for brackish water reverse osmosis and water reuse in municipal and industrial applications, our low-pressure PX solutions offer substantial energy savings and ease of integration.
AT Turbocharger
The AT turbocharger is an efficient, versatile, and reliable solution designed with a compact footprint—no instrumentation or additional equipment is necessary. In addition, it requires minimal installation time and operator training. With the turbocharger’s completely removable and replaceable hydraulics, plant staff can quickly and inexpensively change operating conditions as needed while...
Frequently Asked Questions
The PX Pressure Exchanger works by capturing the high-pressure reject (concentrate) stream from a reverse-osmosis (RO) train and transferring that pressure energy directly to the lower-pressure feed stream. In effect, rather than wasting the pressure energy in the concentrate, the PX device recovers it and uses it to assist the feed pump work.
In the brackish-water context, this means you can significantly reduce the high-pressure pump’s energy input, because a portion of the feed pressure is supplied by the PX device rather than fresh pumping power alone. Compared to many older energy recovery methods, the PX offers higher isobaric efficiency and better flexibility under varying feed conditions.
The PX device is installed in the RO reject stream to capture and reuse pressure energy that would otherwise be wasted. It can be added to new systems or retrofitted into existing ones with minimal design changes. For best results, ensure the PX model matches your system’s pressure and flow range (up to ≈ 400 psi and 7–59 m³/h). The PX’s compact, modular design makes integration simple and offers fast energy-savings payback.
Integrating the PX device can cut energy use by up to 30%, reduce operating costs, and extend equipment life. Its durable, low-maintenance design ensures maximum uptime and consistent performance, even with changing feedwater conditions.