Reverse Osmosis Systems

Residential reverse osmosis systems are usually assembled as 3, 4, 5 or 7 stage constructs. The various stages are in place to act as multiple levels of water filtration and purification. Since water is typically saturated with such elements, compounds and general constituents as calcium, magnesium, lead, iron, mercury, arsenic, fluoride, potassium, sodium, sediment, silt, sand, clay, chlorine, chloramines, bacteria, protozoa, parasites, viruses and other microorganisms. Residential reverse osmosis systems are designed to remove up to 98% of all dissolved solids.

Pre-Treatment for residential reverse osmosis systems

Reverse osmosis systems, residential reverse osmosis systems in particular; achieve total purification in 2 parts. The first is by filtration. In reverse osmosis system set-ups, this is commonly referred to as pretreatment. Filtration is a broad term used to describe the process of removing sizeable contaminants and compounds from feed water. Residential reverse osmosis systems depend on filtration to prolong the life of the actual reverse osmosis membrane. Filtration can include the removal of such particles and dissolved entities as chlorine, sediment, volatile organic compounds, trihalomethanes, silt, clay and small rock residuals. Residential reverse osmosis systems have a variety of cartridge filters that typically precede the reverse osmosis membrane. These can include granular activated carbon filters, carbon block filters, sediment filters, pleated sediment filters, arsenic filters, ceramic filters, pH boosting filters and re-mineralizing filters. These filters are typically replaced on a semi-annual or annual basis.

Purification reverse osmosis membrane

The second part of residential reverse osmosis systems is water purification. Water purification is largely carried out by the reverse osmosis membrane, which is the thin-film cellulose composite membrane, manufactured with nanoscopic pores. Typical reverse osmosis membranes are rated to produce 50, 75 or 100 gallons of pure water per day (G.P.D.). The mechanism behind the reverse osmosis membrane is simply water pressure. As water is fed into the reverse osmosis membrane, the incoming pressure forces water molecules through the fine pores of the thin composite film membrane. This process results in pure water being collected on one side of the reverse osmosis membrane and all impurities on the other. Residential reverse osmosis membranes are replaced on an annual basis for most households.

Storage reverse osmosis metal storage tanks

Due to the nature of reverse osmosis water production, a 4-gallon storage tank usually accompanies reverse osmosis systems. Since reverse osmosis water is produced at very low flow rates, it is necessary to provide ample storage for the reverse osmosis system to be practical in a household. After inlet water has been filtered and purified, it is directed to the storage tank for use at a later time. The reverse osmosis storage tank contains a bladder within it that builds pressure as water fills. It is from the reverse osmosis storage tank that water is fed through the faucet into a glass, cup, pot or other vessel for consumption by homeowners. The residential reverse osmosis storage tank is available in two finishes, metal or plastic. Storage for reverse osmosis water, or pure water, can be increased from 4-gallon to 10-gallon, 25-gallon, 50-gallon, 100-gallon or even greater quantities in an attempt to suffice household requirements.

Designer residential reverse osmosis faucets

Reverse osmosis systems are typically tucked away underneath kitchen sinks or mounted in the basements of homes. The only visible component of a residential reverse osmosis system is the metallic faucet that is commonly situated adjacent to the existing kitchen faucet. This non-air gap, slender, shiny faucet is where purified water, or reverse osmosis water, is dispensed for consumption. Reverse osmosis faucets are available in a multitude of metal finishes including chrome, brushed nickel, oil rubbed bronze, antique brass, antique wine and satin nickel.

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