Innovations in RO Membrane Materials Save Water Use

July 26, 2019

Toray develops and patents membrane components that enhances reverse osmosis efficiency.

In a world where water conservation is increasingly underscored, water efficiency in point-of-use (POU) drinking water systems are highly scrutinized. Standard reverse osmosis systems (RO) are known to have a 1-to-4 product-to-waste ratio, where the volume of wastewater generated has raised concerns in water-distressed regions.

As a way to boost water recovery, it is necessary to lower the flow resistance on the permeate side and reduce the ion concentration on the RO membrane surface. What if materials were available to ease the flow of water through the membrane, which in turn, can increase the recovery rate? As an innovator of materials addressing the challenges of today and for tomorrow, Toray has developed (and patented) membrane components that work together to enhance RO efficiency. By using materials with higher porosity and which can lower flow resistance, recovery can be doubled without compromising membrane performance. This new product line is marketed under Roice and is part of Toray’s CSM membrane products offerings.

Roice membrane elements are tested and certified under NSF/ANSI Standard 58 for drinking water treatment systems and are manufactured at Toray Membrane USA’s ISO 9001:2015 and 14001:2015 registered facility in Poway, Calif.

In the Sustainability Vision announced in 2018, Toray has committed to solving the water scarcity challenges and lighten burdens on the environment by utilizing membrane technologies.