Reverse Osmosis is a certain type of water filtration method which utilizes a thin, semi-permeable with small pores for allowing passage of water while rejecting larger molecules of dissolved salts and other impurities like bacteria. It is a very effective water treatment process for producing highly purified drinking water systems, industrial boilers, cosmetics, seawater desalination , pharmaceutical production, food and beverage processing and several other applications.
Working principle -
Reverse Osmosis is a continuously operating water treatment technology that uses pressure for passing source water through a thin membrane and with that separates the impurities from water. RO works on the opposite principle of osmosis, the natural tendency of water with dissolved salts which is to flow through a membrane from lower to higher salt concentration. This process is found throughout nature and is also used by plants for absorbing water and nutrients from the soil. In the anatomy of humans and other animals, the osmosis process is also used by kidneys for absorbing water from the blood. In an industrial RO system, for overcoming natural osmotic pressure, pressure usually from a pump is used which forces the feed water with its load of dissolved salts and other impurities through a refined semi-permeable membrane that removes a high percentage of the impurities and ultimately produces a highly purified water.
In conventional commercial industrial applications, 75% of the feed water is purified whereas, in the applications in which water conservation is important, 85% of the feed water is purified.
Reverse Osmosis Membranes -
A reverse osmosis system is built around several membranes. Each membrane is a spiral wound sheet of semi-permeable material. membranes are available in several sizes like 2-inch, 4-inch, and 8-inch diameter and among them, the 4- and 8-inch diameter sizes are the most commonly used in the industry. As a standard length, 40-inch has been set by the industry for allowing membranes from different manufacturers interchangeable in equipment systems. In the beginning, the construction of semi-permeable membranes was conducted by using cellulose acetate but later on, the industry primarily shifted to use a thin film composite (TFC) being placed on top of a stronger substrate.
Advantages of RO -
- Simple operation
- Easy to install because of the modular design
- No requirement of hazardous chemicals
- Reduced use of water and sewage costs
- Highly Energy efficient
- Can easily be integrated with an existing membrane filtration system or ion exchange system for obtaining around 80% rinse water cycle
So, when you can obtain so many advantages from RO, why not use it up for your water treatment projects? As a leading supplier of quality water treatment plant components in the Middle East and GCC region, Dutco Tennant LLC can provide you with the most state of the art range of Reverse Osmosis Membrane. With us, you can also get Fully automatic Brackish water and Seawater RO plants in skid Mounted/ Containerized Configurations.