Does reverse osmosis remove chlorine?

There have been many questions asked by people looking for the ideal water filtration system and one of them has been; does reverse osmosis remove chlorine?

Well, it does. Reverse osmosis (with the help of carbon filters) does a very good job of eliminating chloroamines in water. Although a reverse osmosis (RO) unit looks like a complex system; it actually is a simple water filtration process. And mind you the technology has been around for years. High-pressure RO systems have been used to desalinate water (converting seawater into clean drinking water) since the 1970s. Having a better understanding of how these systems work will clear all doubts you have about them; never mind the filters and colored tubes.

The most important things to keep in mind are these;
* All reverse osmosis systems work the same way and have the same basic components.
* The only difference between them is the quality of the filters and membranes inside the system.

How does a reverse osmosis membrane work?

Reverse osmosis by definition is a process in which dissolved inorganic solids (like salts) are removed from a solution (such as water). This is how it works; water pressure from the tap pushes water through a semi-permeable membrane. This membrane (which is about as thick as a celllophane) only allows mater to pass through. The contaminates (impurities) get flushed out.

There are many factors which determine how effective an RO system works;
* incoming water pressure.
* water temperature.
* type and number of total dissolved solids (TDS) present in water.
* Quality of the filters and membranes used in the system.

Are all reverse osmosis systems & filters the same?

As previously mentioned; while one RO system may look the same as the next one, there are significant differences. For example the quality of the components may not be the same. While the differences may be minute they may have a significant effect on the quality of the water the system produces. o be on the safe side, ask these questions before buying that water filtration system;
1. Which methods did the manufacturer use to bind the parts? Ask the type of weld that has been used to hold the plastic components. Will the water seep through and bypass the filtration system thereby compromising the quality of the water used? Can the system leak?
2. Is the ‘fill’ of high quality? Ask if the contents of the system are of good quality. They should be able to produce the expected percentage of contaminant reduction. For instance, carbon quality may have a big impact on reduction capacity, reduction capability as well as on the sloughing of filtrates which may clog the membranes.
3. What is the manufacturer’s control on variations or tolerances in specs? If for instance the manufacturer has specified that a component has been rated as a 1 micron filter will it actually filter out a substrate larger than that or does the component work 85% of the time? What if it filters at the rate of 0.5 microns? How long would you expect it to work without the need for replacing the filter?

What’s the annual maintenance cost of an RO system?

Only the pre-filters and post-filters need to be replaced at least on an annual basis to ensure proper performance. Ultimately the quality of the water and the frequency of use determines how often these should be replaced. On average an RO system will cost $ 0.25 per day. The membrane itself can last for between 2 to 5 years.

Where can you buy high quality reverse osmosis system or replacement membranes and filters

You can get an RO system online. Just check out the brand and specs of the system before you buy. Replacement filters and membranes for the same are also available. Note that the design of the system may include a single or even two filters whose role(s) are to remove turbidity, odor, color and other impurities. In general the water filtration system may include am adsorptive, catalyst/ oxidizing, mechanical or neutralizing filter.

Well, in conclusion, it will be reasonable to claim that reverse osmosis systems are ideal for removing chlorine and other impurities from water. However, a UV water treatment can also be used in combination with the RO system. Sunlight has been known to kill microscopic pathogens as long as the frequency of the radiation is just right.

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