Reverse osmosis membrane is mainly used to treat pure water, and ultrafiltration membrane is mainly used to treat mineral water.
Reverse osmosis RO membrane
It is an artificial semipermeable membrane with certain characteristics made of simulated biological semipermeable membrane. RO is English reverse osmosis.
Short for membrane, which means reverse osmosis in Chinese. The flow pattern of water is generally from low concentration to high concentration. Once water is pressurized, it will flow from high concentration to low concentration, which is the so-called reverse osmosis principle. Because the pore size of Drummond RO membrane is five millionths (0.000 1 micron) of that of hair, it is invisible to naked eyes, and the bacterial virus is 5000 times that of hair. Therefore, only water molecules and some mineral ions beneficial to human body can pass through, and other impurities and heavy metals can pass through.
ultrafiltration membrane
It is a membrane separation technology, and its membrane has a porous asymmetric structure. The filtration process is driven by the pressure difference across the membrane.
Power, a solution separation process based on the principle of mechanical sieving, usually adopts a pressure of 0.0 1-0.03 MPa, and the pore size of Delanmeier ultrafiltration membrane is roughly between 0.005- 1 |um, so that molecules are trapped.
The amount is between1000 and 500000 daltons, so the ultrafiltration membrane separation process was once considered as a simple physical separation process.