Nanofiltration membrane is an emerging membrane separation technology with separation capabilities between ultrafiltration membrane and reverse osmosis membrane, which can be widely used in various types of water treatment and fermentation broth treatment. With the increasing emphasis on environmental protection and ecological sustainable development in China, nanofiltration membranes have been highly recognized and vigorously promoted in industrial wastewater treatment, creating enormous value for protecting water resources and the environment.

Unlike traditional industrial wastewater treatment technologies, nanofiltration membranes use a physical filtration mode. This mode of industrial wastewater treatment does not require the use of chemical reactions and biological decomposition methods to remove some metal ions, harmful compounds, organic matter, and other substances, which can effectively save the cost of wastewater treatment. The nanofiltration membrane is easy to operate, and only requires pressure to drive the wastewater into the membrane channel to start filtration. This process is highly automated, which not only improves wastewater treatment efficiency but also saves labor costs.

The pore size of nanofiltration membrane is very small, with excellent ion selectivity, which can pass monovalent ions and fully intercept divalent and high valent ions. When industrial wastewater flows through the nanofiltration membrane channel, various pollutants and harmful substances such as suspended solids, organic matter, colloids, heavy metal ions, salts, acids, bases, bacteria, etc. can be intercepted by the membrane. Due to the fact that this process is carried out in a sealed membrane module, it can also prevent the leakage of volatile pollutants and has high safety.

While ensuring high filtration quality, the anti fouling performance of nanofiltration membranes is also very strong. Its membrane surface is smooth, not easily clogged, has stable chemical properties, can withstand high temperatures, acid and alkali corrosion, is easy to clean and regenerate, and has a long service life. In addition, its footprint is also very small, making nanofiltration membranes easier to maintain and manage compared to large industrial wastewater treatment equipment.

Therefore, in industrial wastewater treatment, nanofiltration membranes have become the choice of many enterprises. It has low investment costs, well-designed technology, and can provide stable effluent quality, helping enterprises solve environmental problems and improve environmental benefits.