Desalination is the process of removing salts from water and thus it produces fresh water from sea water or brackish water. Ultra filtration and Nano filtration technology can be used for many applications. The most vital use is to produce potable water from sea water which can be used for domestic or municipal purposes.
Ultrafiltration is actually a natural, continual process and an essential part of the water cycle. Rainwater falls to the ground and flows to the sea, dissolving minerals and becoming increasingly salty. As water evaporates through the sun’s energy, it leaves the salt and the resulting water vapor forms clouds that produces rain, thus continuing the cycle.
Today, developments in ultra filtration are especially focussed on reducing energy comsumption and cost. The desalination industries are also paying a great deal of attention of to environmental consideraitions. Environmental safeguards has become important in permitting of new plants. Low energy comsumption also reduces a plant’s carbon footprint and hence new technologies are being used which does not cause any disruptions to the marine life.
Ultra Filtration (UF) is a variety of membrane filtration in which hydrostatic pressure forces a liquid against a semi permeable membrane.
Suspended solids and solutes of high molecular weight are retained, while water and Low molecular weight solutes pass through the membrane.
This separation process is used in industry and research for purifying and concentrating macromolecular (103-106 Da) solutions, especially protein solutions.