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All you want to know about the water filters

We all know that water is a very precious and an essential resource so we should conserve it and consume it with caution. But unfortunately due to environmental constraints and chemical contaminants our water is getting polluted and depleted. The tap water available to us also affect our health negatively. Hence, the need for filter arises so that we can get the most out of it. Since many variants of water filters are available in the market these days we are caught in a dilemma as to which is the best option, is economical and at the same time solve our purpose and so on. Some filters just produce clear and better tasting water while others remove the contaminants affecting health.

There are various techniques of water filtration as used in different filters:-

1. Reverse Osmosis (RO):- in this method, a semi-permeable membrane separates impurities from water which result in wastage of substantial amount of water. RO removes parasites, metals like copper, lead, mercury and pollutants like barium, arsenic etc.

2. Ceramic filters - These are made from porous ceramic material and can be hollow in the middle or contain carbon filters. It does not remove chemical contaminants but only micro-organisms larger than ceramic pores. The activated carbon core inside the filter cartridge removes metallic and organic contaminants.

3. Distillation - in this case water is first boiled and then purified steam is recondensed with the help of electricity. This water is deprived of electrolytes like magnesium and calcium. The water also gets rid of heavy metals like fluoride, barium, arsenic.

4. Ultra violet disinfection - UV technique kills bacteria and other micro-organisms and also remove microbes like Giardia but does not remove chemical contaminants. For this method to be effective the water should be very clear.

5. Activated carbon filters - It traps impurities, bad taste and odour. It is used in tap filters, under the sink and in counter top. Some certified filters also remove heavy metals, pesticides and volatile organic chemicals.

Besides these techniques there is a wide array of water filters

1. Tap filters - These are easy to install but slow and don’t fit on all the taps.

2. Under-the-sink filters - These are installed by the professional, are expensive but filter water at a rapid pace.

3. Whole-house filters - These remove contaminants easily right from the entry point of house. It means that all the taps in your house are filtered.

4. Bench-top filters - These are easily installed and can filter large amount of water. They don’t clog and create clutter on bench top.

5. Reverse Osmosis - These remove a lot many types of contaminants.

6. Carafe filters - These are inexpensive, slow and have shorter life-span. They can purify only small quantity of water.

Therefore, after the complete analysis of the type of filtration technique you want, you should look for international certifications for your product which involves initial and periodic testing. Whichever water filter you opt for you need to get its maintenance service done on regular basis to ensure greater and efficient performance.

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What is UV water filtration – is it effective?

Ultraviolet (UV) water purification system is the most efficient way of disinfecting biological contaminants like bacteria, viruses, and other microorganisms from the water. UV water purification systems use special light source mounted in front of the flow chamber through which water passes. This light source emits ultraviolet rays of a particular wavelength which penetrates the harmful substances in water and kills those pathogens by disrupting their genetic core (DNA).

How does UV water filtration work?

When water passes through a UV water purification system, all the living microorganisms in water get exposed to the ultraviolet ray which attacks their DNA and eliminates their ability to reproduce. UV water purification system is the exceptionally efficient method of disinfecting water, which is tested and proven to eliminate almost 99.99 percent of biological contaminants, including those harmful living microorganisms responsible for various water-borne diseases such as cholera, typhoid, hepatitis, and flu. The best thing with UV water purification system is it doesn’t require to use any chemicals like chlorine, or to change the odor or taste of water instead it uses advanced methods of filtration like carbon black filters, and reverse osmosis system.

Advantages of UV water filtration

• The most cost effective method of water purification. Low electrical energy is required for UV water filtration system; UV rays source bulb does not consume more than 60 watts of power which is quite equivalent to any domestic used light bulb.

• It is an entirely chemical-free water filtration process. Instead, use advanced purification techniques like carbon filters.

• Like chemical or chlorine disinfection process, it does not change the taste and odour of your water.

• UV water purification is an eco-friendly process; do not have any disinfection byproducts like chemical disinfection.

• Compared to other purification systems, UV water filtration is a quick purification process. You just need to switch on the electricity supply and Get instantly purified water. It also does not require any water holding tank. Hence, conserves water.

• Once installed, very low maintenance is needed. You’re just required to change UV lamp and pre or post filter (that you’re using it with) once a year.

Disadvantages of UV water filtration

• Only produces biological contaminants free and micro-organisms free water. UV light is unable to eliminate other impurities of water such as heavy metals, mud, chemical substances like chlorine, salts, sediments, volatile organic compounds, etc. So, it becomes necessary to used UV water filtration systems in conjunction with carbon filters or reverses osmosis system to eliminate other dissolved impurities.

• Electricity supply is required to use UV water purifier. While this is not a problem in urban cities, it may not be suitable for rural areas.

UV water purification system is quite a revolutionary water treatment process.This technology has been used for many years by the local municipalities and other commercial water bottling plants. As UV water treatment is simple, swift and safe, millions of people are today using this technology to disinfect water.