Nanofiltration is a powerful membrane process for selective separation of dissolved substances and plays a central role in modern water treatment at ORBEN. It bridges the gap between reverse osmosis and ultrafiltration and is particularly suitable for applications in which polyvalent ions, organic compounds or particulate components are to be removed in a targeted manner while some of the salts remain in the water.

ORBENS nanofiltration systems are based on highly selective membranes that use mid-range pressures and thus enable high energy efficiency. Depending on the application — such as in industrial process water treatment, partial desalination or the treatment of raw and well water — membrane materials and system configurations are individually designed. The aim is always an optimal compromise between retention rate, flow rate and service life.

A major advantage of nanofiltration at ORBEN is the precise adjustment to the respective water chemistry. Through detailed analysis of raw water composition, systems can be configured to efficiently reduce hardeners, sulfates, organic substances or heavy metals. At the same time, a defined residual mineralization is maintained, which is particularly advantageous for downstream processes.

ORBENS services include not only the delivery of nanofiltration systems, but also their complete integration into existing treatment lines. Pretreatment, membrane protection, cleaning strategies (CIP) and monitoring concepts are considered holistically. This increases operational safety and significantly extends the life of the membranes.

Nanofiltration with ORBEN is also economically convincing: Compared to reverse osmosis, lower operating pressures and a reduced need for chemicals are possible. At the same time, wastewater volumes and concentrates can be specifically minimized. This makes nanofiltration a sustainable solution for companies that place high demands on water quality, efficiency and environmental compatibility.

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