To date, there only exists two methods of water purification ie: Distillation & RO. RO, also known as hyper-filtration, being the most effective, affordable & finest filtration available.
RO was developed in the late 1950’s by the USA Government for the use in the US Navy (as a method of desalination of seawater). It is the most common treatment technology used by premium bottled water companies and NASA also uses it for their manned space programs.
RO is effective in eliminating or substantially reducing a very wide array of contaminants, and of all technologies used to treat drinking water in residential applications, it has the greatest range of contaminant removal. Reverse osmosis will allow the removal of particles as small as individual ions. The pores in a reverse osmosis membrane are only approximately 0.0005 micron in size (bacteria are 0.2 to 1 micron & viruses are 0.02 to 0.4 microns).
very cost effective in the long term, costing as little as 10c / L of pure water once purchase price, annual maintenance & water costs are factored in.
To reduce membrane fouling and to maintain optimal performance, it is important to ensure that scheduled annual replacements of filters are followed. The reverse osmosis membrane should be replaced every 5-7 years.
Stage 1 - Reverse Osmosis Water Purification In South Africa:-
The first stage of the reverse osmosis water purification process is the sediment filter. In South Africa we have a fair amount of sediment such as dirt, rust, sand, silt and sediment in our water that can affect the taste and appearance of your water. The sediment filter removes all these floating impurities.
Stage 2 - Reverse Osmosis Water Purification In South Africa:-
The second stage of the reverse osmosis water purification process is a carbon filter. Despite South Africa having relatively clean water compared to the rest of the world, contaminants such as chlorine, chloramine and other materials that cause bad taste and odors are present. The carbon filter removes these invisible impurities.
Stage 3 - Reverse Osmosis Water Purification In South Africa:-
The third stage of the reverse osmosis water purification process is the post carbon filter. The post carbon filter provides greater reduction of chlorine and chloramines. These are called pre-filters because they are in front of the reverse osmosis membrane in the water purification process.
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Stage 4 - Reverse Osmosis Water Purification In South Africa:-
The fourth stage of the reverse osmosis water purification process is the RO Membrane. The semi-permeable membrane is 1/10,000 of a micron. The membrane in the reverse osmosis water purification will effectively reduce TDS (total dissolved solids) and removes a wide range of hard water contaminants such as Lead, Arsenic, Percolate, Radium, Copper, Barium, Chromium, Mercury, Sodium, Cadmium, Fluoride, Nitrite, Nitrate and Selenium. The reverse osmosis membrane also removes over 99.95% parasite cysts such as Giardia and Cryptosporidium.