Suez, Salinity Solutions Launch First Industrial Pilot of Hybrid Batch Reverse Osmosis

Water Treatment Suez, Salinity Solutions Launch First Industrial Pilot of Hybrid Batch Reverse Osmosis

2026-05-06 Source: Press release Suez 2 min Reading Time

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Suez and Salinity Solutions have launched the first industrial pilot of the Hybrid Batch Reverse Osmosis solution at the Béziers wastewater treatment plant in France. With a treatment capacity of 100 m³ per day, the solution is able to increase treated water recovery to 90–95 %, compared with up to 85 % for conventional reverse osmosis systems.

The results of the Béziers pilot make Hybrid Batch Reverse Osmosis a promising technology for wastewater reuse, as well as for the treatment of surface and brackish water.(Source: Pixabay) — The results of the Béziers pilot make Hybrid Batch Reverse Osmosis a promising technology for wastewater reuse, as well as for the treatment of surface and brackish water.
(Source: Pixabay)

Puteaux/France – Supported by Ademe, this first industrial pilot of the Hybrid Batch Reverse Osmosis solution, with a treatment capacity of 100 m³ per day, operates under real operating conditions at the Béziers wastewater treatment plant. It is based on Hybatch technology, a piston-driven pressure exchange process developed and patented by Salinity Solutions, which recycles the brine multiple times until the targeted recovery rate is achieved.

This approach increases treated water recovery to 90–95 % (compared with up to 85 % for conventional reverse osmosis systems), limits scaling in the processes, and reduces the frequency of chemical cleanings, thereby extending membrane lifespan. Thanks to significantly lower operating costs, Hybatch helps expand the use of reverse osmosis technology in both municipal and industrial wastewater treatment plants.

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The development of large-scale, energy-efficient wastewater reuse solutions provides an answer to growing challenges linked to water scarcity, driven by disruption of the water cycle. The results of the Béziers pilot make Hybrid Batch Reverse Osmosis a promising technology for wastewater reuse, as well as for the treatment of surface and brackish water.

“The Hybrid Batch Reverse Osmosis technology we are deploying in Béziers with Salinity Solutions provides substantial benefits for wastewater reuse in terms of water, energy and chemical savings. Our objective is to reduce operating costs for the treatment processes, enabling local authorities and industrial players to deploy technologies that are essential to preserving water resources,” shares Grégory Tesse, Infrastructure and Innovation Director of the Engineering & Construction activities of Suez.

"This collaboration with Suez marks a major step towards transforming water reuse economics and sustainability. By proving that high recovery can be achieved reliably and efficiently, at a large scale, with increased energy efficiency, we aim to set a new benchmark for advanced wastewater treatment worldwide," added Richard Bruges, CEO, Salinity Solutions.

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