What is water purification?
Water purification generally means freeing water from any kind of impurity it contains, such as contaminants or micro organisms.
Water purification is not a very one-sided process; the purification process contains many steps. The steps that need to be progressed depend on the kind of impurities that are found in the water. This can differ very much for different types of water.
Q: How does Reverse Osmosis differ from a Water Filter ?
Ordinary water filters use a screen to separate only particles of dirt sediment from water. Reverse osmosis employs a semi permeable membrane that removes not only particles but also an extremely high percentage of dissolved contaminants-molecule by molecule- from raw tap water.
Q: Can you explain Osmosis ?
Assume a membrane is semi permeable, allowing water to pass through while being closed to dissolved salts. Place a membrane between two compartments in a container as shown in the figure to the right. Then place a salt solution in one half of the container and pure water in the other half. Now a fundamental scientific principle comes into play. That is, two different concentrations of liquids within the same system will try to reach equilibrium (i.e. the same concentration of contaminants) on both sides of the membrane. Of course the only way for this to happen is for pure water to pass through the membrane to the salt water side in an attempt to reach equilibrium is called OSMOSIS.
Q: What is Reverse Osmosis ?
Reverse Osmosis is the reversal of the natural flow of osmosis. In a water purification system, the goal is not to dilute the salt solution, but to separate the pure water from the salt and other contaminants. When the natural osmotic flow is reversed, water from the salt solution is forced through the membrane in the opposite direction by application of pressure-thus the term REVERSE OSMOSIS. Through this process, we are able to produce pure water by screening out the salts and other contaminants.
Q: Can RESIDENTIAL R.O. SYSTEMS water purification be used on a long term basis?
Yes, RESIDENTIAL R.O. SYSTEMS produce safe levels of free available chlorine suitable for long term use.
Q: How often do I need to change the filters?
The life span of the filter cartridges cannot be pre-determined or guaranteed, as it depends entirely on the specific circumstances. The sediment filter stops the suspended dirt in the water, which to some degree protects the carbon filter from clogging, thus prolonging it's life span. Change the sediment filter when visibly dirty or when the water pressure drops.
Factors that will influence the change period:
- T he water quality and quantity passing through the water filter system
- The age and material of the supply pipes - old municipal areas have galvanized pipes which rust with time
- If the supply pipes are worked on, mud and dirt will enter the supply network
- The amount of disinfectant (chlorine) added to the water supply