Understanding the Core Water Purifier Technologies
Nanofiltration (NF)
Nanofiltration represents a step forward in water purification technology. With a filtration precision that falls between ultrafiltration and reverse osmosis, the pores of a nanofiltration membrane are in the nanometer range, usually around 0.001 – 0.01 micrometers. This unique pore size endows nanofiltration with some remarkable capabilities.
It can effectively remove a variety of contaminants. For example, it can significantly reduce the levels of heavy metals such as lead, mercury, and cadmium in water. These heavy metals are extremely harmful to human health, and even trace amounts can accumulate in the body over time, causing serious health problems. Nanofiltration can also target certain pesticides, herbicides, and other organic pollutants. Additionally, it has the ability to selectively remove some salts from the water, which is beneficial for improving water taste and reducing the hardness of the water. However, compared to reverse osmosis, nanofiltration has a relatively lower salt rejection rate. This means that it may not be as effective in completely removing all types of dissolved salts from the water.