The new module features a nominal pore size of just 0.005 micrometers and is designed to address the growing challenge of biopolymer contamination in wastewater streams. Biopolymers are a major contributor to biofouling, which can clog membranes, increase pressure losses, and reduce permeate flow in RO systems.

Toray says its proprietary micropore control technology enables the UF membrane to reduce the permeation of biopolymers to approximately one-third of that seen in conventional membranes. Pilot testing at a wastewater treatment facility demonstrated that the module can effectively suppress biofouling in downstream RO membranes while maintaining stable UF permeate flow rates.

By limiting biofouling, the technology is expected to reduce the frequency of chemical cleaning and mitigate operational disruptions in RO processes. This could translate into lower operating costs and improved water production efficiency for wastewater reuse applications.