Reverse Osmosis

Osmosis is refer to the natural tendency for water molecules to pass through a semi permeable membrane, from the side low in dissolved impurities to the side high in dissolved impurities.

Over 200 years later, a modification of this process known as reverse osmosis allows people throughout the world to affordably convert undesirable water into water that is virtually free of health or aesthetic contaminants.

It is basically a process that uses pressure to force a solution through a semi-permeable membrane. A semi-permeable membrane is at the heart of a reverse osmosis system. Reverse osmosis works through a technique called membrane separation. The membrane is permeable only to water molecules.

Raw water enters a module housing the membrane system. The water is forced against the semi-permeable membrane and only clean water molecules pass through the pores in the membrane. Impurities are rejected and flushed away.

The idea is to use the membrane to act like an extremely fine filter to create drinkable water.

Diagram above show the functions and the importance of RO membrane during the water filtration process.