Tag Archive reverse osmosis

Residential reverse osmosis systems – Right for you?

Countless people have installed residential reverse osmosis systems in their homes to protect their families from the toxins and contaminants often found in their faucet water-but are reverse osmosis systems that the best answer. The foundation: as a consequence of the 80,000 or so chemicals used in agriculture and industry, and in our houses, some 2100 chemicals are found in our drinking water, based on research done on the water in 29 of our major cities. Some are found only in very low concentrations, but there are a growing number of chemicals at dangerous levels-chemicals which are thought to be responsible for numerous serious health conditions, and even cancer. If people know this, they frequently become interested in water filtration systems for their homes.

Reverse osmosis

The systems: there are two sorts of systems widely sold in the US. One is the carbon block, or carbon filtration, kind. The residential reverse osmosis system is more widely marketed, although this author thinks that the carbon block systems are far superior. Residential reverse osmosis systems reverse osmosis systems force water through a membrane with pores so small that water molecules can only barely be forced through them. Nevertheless, lots of the above-mentioned compounds are even smaller, so that they slip right through the membrane end up in the purified water. Because of this, reverse osmosis systems typically include a carbon filter that could capture the chemicals they cannot. Since the filtering process is extremely slow, a storage tank is needed, which takes up a great deal of room under the sink.

The compounds that are captured by the membrane would immediately foul and clog it if they were not washed away. Because of this, about 3-9 gallons of water have been lost down the drain for each gallon of filtered water generated. Due to the complexity of residential reverse osmosis systems, their operating cost is much greater. The carbon block system I set up in my home generates clean, pure water at roughly $.10 a gallon. Residential reverse osmosis systems typically cost about $.25 to $.35 per gallon to function. Reliability can be a problem. Pinhole leaks and corrosion of the filtration membrane result in much less-effective filter compared to the design specifications call for. Carbon block systems these systems force the water through blocks of carbon. It defies belief, but this awesome material can have about 150 acres, or more than half and a half million square feet of surface area per pound. As water is forced through the carbon, impurities are trapped in all the small nooks and crannies and pores. After the water exits the system, nearly all of the impurities, including the volatile organic chemicals that the reverse osmosis systems do not capture, are removed.

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