It is quite interesting to note that there are several different types of water filters. Almost all these filters revolve around processes that can remove harmful particles and contaminants from water. This doesn’t mean all these filters are similar and equally efficient. According to experts, some filters work better in certain conditions than the rest. This is why you should hand pick the right kind of filter for you home or lab. Here are few important tips to be remembered when you choose filters:
- Always, remember that filters combine several technologies together. One depends strongly on another.
- To make sure all harmful contaminants are removed properly, you should verify if the filter is made of high quality components! Above all, it should come from reliable brands.
- Thirdly, the filter should be legally certified and approved by NSF.
With this being said, here are top few filters that can help you purify water in the long run.
Water Filter Technique #1 – Reverse Osmosis
The list of water filters begins with “Reverse Osmosis”. In reverse osmosis, the water to be filtered, forced through a membrane. This is a semi-permeable layer, only permeable from one side, so that the filtered water can not flow back. The membrane acts as a screen and retains all larger particles. In this way, heavy metals and other undesirable substances such as nitrates and phosphates can be removed from the water. However, in reverse osmosis minerals are filtered out of the water also, which are valuable for the human. Another disadvantage of drinking water filters that work on the principle of reverse osmosis, is the fact that they need a pump and therefore use electricity and require the right amount of water pressure.
Water Filter Technique #2 – Water Ionizers
Over the past few years, water ionizers have become extremely famous. It is a simple machine that produces clean, fountains of water. Some believe water ionizers are much better than RO techniques and bottle water. It is quite interesting to note that bottled waters are quite acidic in nature. When compared against ground water or rain water, bottled waters prove to be much more acidic. This can be attributed to the fame of water ionizers. These devices can convert acidic water into alkaline ionized solutions. There are several health benefits in this transition. For instance, alkaline water can prevent (or at least reduce) the risks of skin diseases. It can give milk, coffee and tea an exquisite taste. And, if you body has an imbalanced level of acidity, ionized water will lend you a hand of help. It will make sure the unhealthy effects of acidic food are neutralized. However, water ionizers don’t come for free! These machines range between 1000 USD to 6000 USD! There are often attached to faucets and showers. And, like many other water filters, ionizers can remove impurities and contaminants from water.
Water Filter Technique #3 – Water Deionization
Moving on, water deionization is the process of removing dissolved salts from water. It is a scientific process that forced water to flow through two different types of materials that can affect the overall salt percentage. A lot of people confuse demineralization and deionization. These are two different processes that can affect the overall purity of water. Initially, deionization removes magnesium and calcium ions from water. This stage is quite similar to the softening process. Moving on, deionization gets rid of various positive metallic ions. These ions are replaced with sodium and hydrogen ions. As these two stages are completed successfully, you will get mineral free water. Conversely, deionization makes use of a wide range of equipment (both single and multiple bed units).
Water Filter Technique #4 – Ozonation
A newer kind of water filter would be ozonation. This is a powerful process that affects to percentage of viruses, protozans and bacteria in water. When compared against chlorination, ozonation is capable of removing harmful microorganisms in an effortless and uncomplicated fashion. Strong oxidizing power can destroy tacky microbes and contaminants in no time. Above all, ozonation doesn’t introduce chemicals into water. Instead, it uses natural methods to eradicate organic, inorganic and microbiological components from water. As a result, water will be odor free and tasteless.
Water Filter Technique #5 – UV Water Purification
Another powerful technique that gets rid of harmful contaminants and particles would be UV water purification. According to recent study, UV water purification is capable of destroying 99% of harmful microbes from water. Just like ozonation, UV water purification doesn’t add chemicals to water. It makes sure the taste and odor of water remains intact or improved. Currently, it is one of the four effective methods used to disinfect public water systems. Ultraviolet water purification is cost effective, reliable and extremely quick.
Benefits of UV Water Filters
Ultraviolet (UV) creates an unsafe ambiance for bacteria. It makes sure water is clean enough and void of microbes. As suggested by its name, Ultraviolet light is used to kill the microorganisms. This is a proven method that doesn’t have any side effects. The initial cost of ultraviolet light water purification might seem expensive. However, the technology comprises of a low operating cost. It is trouble free and environmental friendly. In the long run, ultraviolet light purification systems are likely to replace chlorination.
Water Filter Technique #6 – Activated Carbon!
Last but certainly not least, activated carbon is used to purify water. Activated carbon removes contaminants and harmful particles using chemical bonds. Carbon filters are known for its varying effectiveness. The technology works well in some conditions and fails in few others! Nevertheless, it is capable of removing odor, taste and chlorine from water. Many contaminants like mercury, lead, VOCs and asbestos can be removed using activated carbon. However, inorganic pollutants like nitrates, arsenic, perchlorate and fluorides cannot be removed using this method.