Understanding Home Reverse Osmosis Systems and the contaminants they remove

Reverse Osmosis Systems (RO) : Water pressure is used to force water molecules through a very fine membrane leaving the contaminants behind. Purified water is collected from the "clean" or “permeate” side of the membrane, and water containing the concentrated contaminants is flushed down the drain from the "contaminated" or “concentrate” side. The average RO system is a unit consisting of a sediment/chlorine pre filter, the reverse-osmosis membrane, a storage tank, and an activated-carbon post filter.
Reverse osmosis removes salt and most other inorganic material present in the water, and for that reason, RO lends itself to use in places where the drinking water is brackish (salty), contains nitrates or other dissolved minerals which are difficult to remove by other methods.

Using a quality carbon filter to remove any organic materials and chemicals that get through the sediment pre-filter, the purity of the treated water approaches that produced by distillation. Microscopic parasites (including viruses) are usually removed by RO units, but any defect or micro-tear in the membrane will allow these organisms to pass into the ‘clean” water. This is why RO systems are not rated to remove microorganisms except when an Ultraviolet Light filter is incorporated into the system, such as in the case of the Tap Master UV and the Tap Master ULTRA.

Though slower than a water filter, RO systems can typically purify more water per day than distillers. Also, they do not use electricity, but RO systems do waste water. Four or more gallons of concentrate wastewater are flushed down the drain for each gallon of filtered water produced. Zero waste RO units are available, however problematic, as they can re-inject the concentrate wastewater back into the water feeding the RO thus forcing the RO to work harder and shortening its service life. Other types of Zero Water RO units will inject the wastewater into the hot water line where it is dispensed out of the kitchen faucet on your hands or dishes. A better option for reducing reverse osmosis system water waste is to fit it with a permeate pump, which will reduce water waste by up to 80%.
Two common types of household RO membranes are the Thin Film Composite (TFC or TFM) membrane and the Cellulose Triacetate (CTA) membrane. The main differences between the two types are filtration ability and chlorine tolerance. The CTA membrane is chlorine tolerant, but is more susceptible to fouling from bacteria, and it only rejects 93% of standard contaminants. The TFC/TFM membranes reject 98% of standard contaminants on average, are less susceptible to organic fouling, but it can only treat chlorine free water. Carbon pre-treatment must be used with a TFC/TFM membrane when purifying chlorinated municipal water supplies.

The Tap Master Series Advanced Reverse Osmosis Systems

The Tap Master premium reverse osmosis systems from Advanced Water Filters can eliminate up to 99% dissolved solids, metals, harmful chemicals and microorganisms from your drinking water, because only the most sophisticated components certified to NSF (national science foundation) standards are included in the design and construction of our products.

One thing you will notice about the Tap Master reverse osmosis system is that our filters are incorporated into the filter housing, so that when it comes time for the annual filter change, the filter, and the entire filter housing, is disposed of. This is to prevent flooding in your home. The leading competitors “canister” type RO system keeps the same filter housing year after year, subjecting it to constant high water pressure, water erosion, and wear from maintenance. Only the filter element is changed. The manufacturers of these systems recommend you replace the canister housing sump and cap every 5 years because their housings’  walls and seals begin to weaken and decay, eventually failing, potentially causing substantial damage. Advantage – Tap Master!

The second thing you should notice about the Tap Master RO system is the high grade filters designed to yield 3900 gallons of purified water, with both carbon stages made from coconut shell carbon, and filtration down to 5-microns. The competition typically uses lower grade filters made from coal carbon rated to purify just 1500 gallons of water, with one 5-micron filter and one 10-micron filter. The competition also uses extra filter stages and recommends multiple filter changes per year in order to compensate for their poorer quality filters. Advantage – Tap Master!

The “steady” water flow from a typical home RO system will take about 40 seconds to fill a pitcher or large spaghetti pot. This level of performance was unacceptable to the water wizards here Advanced Water Filters, who devised a Fast Flow RO™ kit for the Tap Master which effectively doubles the water flow from your RO sink spigot! We never stop searching for new ways to satisfy.

In designing the Tap Master RO a sophisticated combination of flow restriction components were integrated into the system architecture to regulate pressure to and from the 50 gallon per day membrane chamber for optimized water purification and minimized wastewater production. For further system efficiency improvement please consider a permeate pump which will reduce wastewater, increase production, and allow your tank to fill fuller.
 

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View the contaminants which a reverse osmosis system can remove.

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