Over the past few years, water purification technologies have taken a big leap. Water filter companies are always developing new and better ways to give their customers the healthiest and purest form of drinkable water. Here are 5 of the most advanced technologies.
Candle filter water purifiers have a fundamental mechanism of operation. The candle consists of minute pores; any particle larger than the size of the pores cannot pass through, allowing only pure water on the other side. This water filter does not require electricity to operate, but it has its downsides. These pores cannot block microbes, and hence, the resultant water still needs to be boiled before it can be consumed. Also, the candle requires very frequent cleanup.
Activated Carbon Filter:
Activated carbon filters are used for purification of water in this process. Carbon filters can remove chemicals such as pesticides, chlorine, and other impurities. The process of filtration can change the odor and taste of the water. This process doesn’t require electricity to operate, but it is also not too effective in the removal of microbes and germs from the water.
Ultra Violet (UV) Purification:
UV purification, also known as e-boiling, is a method that uses ultraviolet rays to kill bacteria, germs, microbes, and cysts in water. UV water purification, though simple, is an effective process that helps destroy close to 99.99% of harmful organisms present in water. A small Mercury lamp is present inside the water purifier, producing short-wave ultraviolet radiations that irradiate the water, and penetrate bacterial and viral cells, destroying their reproductive abilities. When microbes and other microorganisms are unable to multiply, they gradually die. UV purification kills germs, but their bodies remain inside the water. Filters are separately required to remove the bodies of these germs physically, so this kind of purification is applied in conjunction with some other form of filtration, such as RO or activated carbon filters.
Reverse Osmosis (RO):
The most popular and widely used technology in water purification is Reverse Osmosis (generally known as RO water purifier). As is done in the process of osmosis, dissolved chemicals and germs are removed from water using a semi-permeable membrane. This semi-permeable membrane separates germs and unwanted salts from water to make it drinkable. The membrane contains very fine pores that allow only water to pass through, leaving behind germs micro and dissolved salts that were previously suspended in water. The drawback of this technology, though, is that it also removes essential minerals from water and alters its taste. Some RO brands are claiming to retain the necessary minerals present in water. Regular maintenance and care are required for the membrane of an RO filter.
The ultrafiltration method uses a membrane similar to that in reverse osmosis, but these have bigger pores. Membranes in UF purification remove almost all colloidal particles that include most pathogens as well as turbidity, but they fail to remove salts and dissolved solids. Unlike ultraviolet filters, UF water purifiers remove germs and bacteria from the water. For a low level of TDS and hardness of water, ultrafiltration purifiers work as good as RO purifiers.
So, these were the most recent and advanced technologies in water purification. What kind of water purification do you have at your home?