Acuriant Technologies Inc., the company behind the Nanostone ceramic ultrafiltration (UF) brand, has introduced CUF|Flow™, a new high-capacity PFAS-free UF module designed for municipal and industrial applications. The launch expands the company’s ceramic UF portfolio to three modules, each developed for different water qualities and space constraints.
CUF|Flow™ has been presented at the Innovation Driven Water Sustainability Conference (IDWS 2025) in Jeddah, Saudi Arabia, where Acuriant highlighted how the technology aims to help operators facing tightening regulatory requirements, variable raw water conditions, and limited site footprints.
“2025 has been a transformative year for Acuriant and our Nanostone brand,” said Jürgen von Hollen, CEO of Acuriant Technologies Inc. “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 40 percent more membrane surface area, achieving higher throughput in the same footprint, lowering lifecycle cost, and reducing its environmental impact.”
PFAS-free membranes and increased design flexibility
Nanostone’s ceramic membranes are PFAS-free, offering utilities a future-proof platform as scrutiny on PFAS exposure increases. CUF|Flow™ incorporates 40% more active membrane area within the same housing dimensions as the CUF|Shield™ module, enabling two design approaches:
- Capacity-first: approximately 40% more treated water from the same rack.
- Efficiency-first: around 29% fewer modules for identical output, reducing racks, valves, pipework, and structural steel.
These options can support both new system design and optimisation of existing facilities facing space or cost limitations.
Nanostone ceramic ultrafiltration modules in an industrial installation.
Completing the ceramic UF portfolio
The Nanostone portfolio now includes:
- CUF|Flow™ – high-capacity UF for low-to-moderate solids.
- CUF|Shield™ – UF for high-solids and fouling-prone surface water and wastewater applications.
- CUF|ShieldPlus™ – high-performance UF for chemically aggressive or complex industrial streams including microelectronics, pharmaceuticals, and speciality manufacturing.
“CUF|Flow prompts a rethink of water-treatment economics,” added von Hollen. “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.”
