AXEON Nanofiltration Membrane Systems for Water Softening
Nanofiltration (NF) membrane technology uses applied pressure to separate dissolved ions from water through a membrane. In general, NF produces as much filtered water as a traditional reverse osmosis (RO) system, but at 50-70% of the pressure. Nanofiltration membrane filtration also typically allows for more salt to pass through it compared to reverse osmosis filtration. This technology is excellent for removing organic matter or for water softening. Utilizing nanofiltration to filter hard water (from calcium carbonate and magnesium sulfate) uses less energy than reverse osmosis.
Benefits of Nanofiltration and Industry Applications
Nanofiltration is a newer membrane technology and is being used in many industrial process applications, including food and beverage processing, chemical formulating, pharmaceuticals and more. Nanofiltration has several benefits that make it an ideal solution, namely its specific pore sizes that can remove organic matter and minerals at a greater rate of efficiency than ultrafiltration. Its ability to remove particulate between 1 and 10 nanometers makes nanofiltration an excellent source of water filtration for aqueous systems that demand higher purification power and specific water softness values. Other benefits include:
- Gentle molecular separation: The membrane-based molecular separation process is gentler than its main competitor process (centrifugation), making nanofiltration an ideal solution for pharmaceuticals and chemistry.
- Energy-efficient operation: Nanofiltration does not require constant heating or cooling to operate effectively, which helps reduce operating costs when compared to distillation.
- Minimal allowed sodium ions: To help desalinate water and at the same time, softening and purifying for a single-step process.
Nanofiltration systems can perform as a water softener at room temperature, making them an efficient alternative to distillation and other processes that necessitate the use of heat. This helps minimize the overall operating cost without sacrificing quality of the end product, as the softening process is just as effective when it’s pressure based.