Nanostone ceramic ultrafiltration modules arranged in a full-scale rack configuration, demonstrating the compact footprint of the CUF|Flow system (Image: Acuriant Technologies)
Acuriant Technologies has introduced CUF|Flow, a high-capacity ceramic ultrafiltration (UF) module within its Nanostone portfolio. The launch was announced at the Innovation Driven Water Sustainability Conference (IDWS 2025) in Jeddah, Saudi Arabia. The introduction of CUF|Flow adds to Nanostone’s expanded three-module portfolio designed to address challenging water conditions and limited treatment footprints.
Jürgen von Hollen, chief executive officer of Acuriant Technologies, described 2025 as a significant year for the company and the Nanostone brand. He said, “From one to three products in a single year reflects the Nanostone brand mission: Water Can’t Wait. Neither Can We. Driven by customer demand and our innovation engine, CUF|Flow delivers a step-change in capacity and efficiency, adding forty percent more membrane surface area, achieving higher throughput in the same footprint, lowering lifecycle cost and reducing its environmental impact. It fundamentally changes what utilities and industries can expect from ceramic UF and demonstrates our commitment to lead the field of filtration and separation technologies.”
PFAS-free ceramic UF for changing regulatory demands
Nanostone membranes are PFAS-free, providing a treatment platform suited to tightening regulatory oversight around PFAS exposure. CUF|Flow has been developed for municipal and industrial operators managing variable raw water, increasing regulatory pressure and constraints on available space.
Higher throughput with the same footprint
CUF|Flow incorporates forty percent more active membrane surface area within the same housing as the established CUF|Shield module. This design enables two deployment strategies. A capacity-first approach can increase water output from existing racks by up to forty percent. An efficiency-first approach can reduce the number of modules required for the same output by approximately twenty-nine percent, lowering the volume of racks, valves, interconnections and structural steel while reducing total installed cost and embodied carbon.
Portfolio designed for variable water conditions
Nanostone’s PFAS-free ceramic UF portfolio now spans a full range of municipal and industrial needs. CUF|Flow provides high-capacity treatment for low to moderate solids. CUF|Shield offers protection for high-solids and fouling-prone sources. CUF|ShieldPlus is designed for complex or chemically aggressive industrial streams, including microelectronics, pharmaceutical and specialty manufacturing applications.
Von Hollen added, “CUF|Flow prompts a rethink of water-treatment economics. It expands how projects can be conceived, turning space constraints into opportunities and redefining longstanding assumptions about cost per cubic metre, footprint design and lifecycle economics. Equally important, our pace of innovation should not be mistaken for a product-only focus. Acuriant is solutions-focused, applying deep application know-how with customers worldwide across our core applications.”
