Ultrafiltration is a membrane filtration-based method that achieves separation through a semi permeable membrane.

An Ultrafiltration filter has a pore size of around 0.01 microns. The process removes turbidity, bacteria, protozoa, and some viruses from the water but it cannot remove dissolved substances unless they are first adsorbed (with activated carbon) or coagulated (with alum or iron salts). 


Ultrafiltration is often used for the removal of particulates and macromolecules from raw water in order to obtain potable water. It is also utilized in a range of industries from chemical and pharmaceutical manufacturing to food and beverage processing and is also used in blood dialysis.

Food and Beverage Industries

Used for fruit juice concentration and clarification.
Used in the processing of cheese whey to obtain cheese whey concentrate, and for removal of pathogens from milk in the dairy industry.

Other Industrial Applications

Used for the filtration of effluent from paper pulp mills.
Ultrafiltration is often used for pre-filtration in Reverse Osmosis systems in order to protect the Reverse Osmosis membranes.