Ultrafiltration (UF) systems have diverse membrane filtrations where hydrostatic pressure pushes solvents against a very fine membrane. They block suspended particulates and solids that are large while water and solutes with a lower molecular weight are allowed to flow through the membrane.
Ultrafiltration systems work almost like any other water filtration system. In a sediment filter, water flows through and captures particulate with the porosity of the filter. An ultrafiltration system works in the same way except that it filters anything larger than 0.025 micron, which is much more than your average sediment filter. Typically, we put a carbon filter on the system too to remove bad taste and odor along with suspended solids. The membranes in these different systems are going to be configured differently, but they do the same thing. Both systems mechanically filter particulate down to 0.025 microns under the sink. The water filtered through this system flows to a special tap so that just drinking water, or water that you would use to cook with, is accessible through a specified faucet. You don’t need water filtered down to 0.025 microns to rinse your dishes or wash your hands, so we would run another faucet. The point-of-entry system processes all the water running into your house and is very good at tannin reduction (typically caused by organics - tea leaves, for example, create tannins) and removing colloidal suspension (refers to a solution of highly suspended particulate that won't settle and remains dispersed).
