Chlor-Alkali

The chlor-alkali industry produces essential chemicals such as caustic soda, chlorine, and hydrogen that serve as building blocks for a variety of industrial applications. As global demand for these products continues to grow, chlor-alkali producers are facing increasing pressure to secure reliable sources of both freshwater and salt, the two fundamental inputs required for modern membrane cell operations.

Effective water management has become a critical priority. Large volumes of high-quality water are required throughout the production process, while conventional treatment systems can generate concentrated brine streams that are costly to manage. Rising freshwater scarcity, salt supply uncertainty, and stricter discharge regulations are driving interest in advanced membrane-based brine concentration solutions that maximize water recovery, recover valuable salts and improve overall resource efficiency.

In 2021, FTS H2O deployed a RecovOAR™ pilot system at Saudi Arabia’s Jubail seawater desalination hub, one of the largest desalination facilities globally. The facility, which includes a chlor-alkali plant, produces over 1.4 million m³/day of potable water, along with a massive volume of high-salinity brine. Over three years of continuous operation, the system enabled the production of sodium chloride from concentrated seawater through the use of Osmotically Assisted Reverse Osmosis (OARO). With RecovOAR™, the plant delivered a recovery rate of 75-78%, producing 0.5 m³/h of high-purity brine and achieving a 5.7-fold reduction in volume, with an energy consumption of <10 kWh/m³ of permeate produced.

Explore the strategic expertise FTS H2O brings to the table, unlocking solutions that not only overcome your unique challenges but also extract significant value from your wastewater management processes.