Choosing The Right Water Filtration Methods



Treat Yourself To Better Health

Whether it?s to remove minerals such as calcium and magnesium from the water or clear it of toxins, companies have developed many ways to filter your drinking water.

Some filters are made to filter all the fresh water that enters a house (Whole house water filtration), while others are only meant to filter the water that comes from a particular fixture.ÿ

This type of water filter method uses carbon or charcoal media to remove contaminants from water. The bits of carbon can be made from coal, burnt wood or coconut shells and range from 0.5 to 50 microns. Activated carbon filters work best when cold water is rinsed though smaller particles of carbon under low pressure.

One of the big advantages of carbon filtration is that they are widely available, and the homeowner can literally buy a cartridge to according to their needs. ÿSome filter more and others less.

The advantages of activated carbon filters is that they remove over 80 chemicals, including chlorine, pesticides and herbicides. A disadvantages of carbon filters is that they do not filter arsenic, bacteria and viruses, fluoride, heavy metals (though they do significantly reduce their presence) or iron.

If you also have heavy concentration of dissolved minerals/salts a carbon filter will not help. They do remove some inorganic pollutants but are not generally successful at removing dissolved inorganic contaminants.

The popular reverse osmosis system removes even more contaminants than activated carbon filters. RO systems remove significantly more contaminants than traditional activated carbon filters.

Although RO systems, one of water flters methods usually have several stages of filtration the main filter is a semi-permeable membrane. Water is forced through the membrane leaving almost all contaminants and dissolved salts behind.

Besides its ability to filter out a great variety of contaminants, another advantage of the reverse osmosis filter is that there are so many varieties that you?re bound to find one that fits the budget. One con is that the filters become clogged, which means they need regular maintenance.

Stages of Reverse Osmosis

Most reverse osmosis system have several stages i.e. pre-filter which removes suspended solids like undissolved minerals, rust and dirt, the 2nd stage is a charcoal filter to remove chlorine. The 3rd stage is usually when reverse osmosis takes place stripping lead, fluoride, cysts, dissolved salts, mercury etc.ÿ

By Choosing The Right Water Filtration Methods

The 4thÿstage on some RO filters take the water through a finishing filter to add nutrients back into the water like magnesium and calcium. The final stage on some filters is the backwash cycle which flushes away any debris that accumulates on the RO membrane. RO filtering is also a slow process.

That?s why most reverse osmosis systems have small storage tanks to use as a reserve. Reverse osmosis systems were notorious for wasting water. In fact, RO systems from just several years ago had a ratio of 4:1, meaning it took 4 gallons of water to produce one finished gallon.

Types of Water Filters Methods

In the age of water conservation RO filters aren?t the most environmentally friendly. Very recently RO filters have become much more efficient using as little as 2 gallons to produce 1 gallon of finished water.

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