Reverse Osmosis (RO), also known as hyper-filtration, is a purification process used in desalination plants to eliminate concentrated solutions like dissolved minerals and salts in water. RO can be customised to address arsenic, nitrate, sulphate and other chemical contamination.
RO technology uses a membrane that is semi-permeable, which allows only pure water to pass through it. During the process it rejects large contaminants passing through the membrane. Quality RO systems use a process known as ‘crossflow’ which allows the membrane to continually clean itself. RO requires a driving force to push the fluid through the membrane and as some of the fluid passes through, the rest continues downstream, thereby sweeping the rejected contaminants away from the membrane.
The unit that is skid-mounted and designed for indoor installation comprises a raw water pump that supplies water to the micron cartridge water filtration system and to the high pressure pump. Micron cartridge filters control the silt density before water enters into the membrane whereas high pressure pump exists to boost water pressure as required.
Advantages:- RO technology has a proven record to reduce/treat contamination related to fluoride/salinity and other chemicals.- It eliminates water from suspended solids, major inorganic pollutants like acids, salts, toxic metals and most of the organic micro pollutants including aromatic hydrocarbons, organochlorine pesticides and toxins.- The model has a throughput of 200 litres to 2,000 litres per hour and ensures quality safe drinking water for a village size of 2,000 to 10,000 population (the capacity can further go up).- Incurs low maintenance costs.- Easy to operate and maintain.
Tata Projects partnered with the Naandi Foundation, a non profit organisation in India, to install RO technology in several villages in India providing clean drinking water to 400,000 villagers.
More information about this project can be found on the Naandi Foundation website: http://www.naandi.org/provide_drinking_water/makewatermore_2b.aspx
Publicly available: yes
Countries where available: India
Price range (USD): Contact supplier for quote
Countries where spare parts can be purchased: India
If you are aware of any updates to the Reverse Osmosis Water Purifier project please complete the form or send an email to [email protected]