World water day has just gone by, a reminder for the importance of water for ecological system. As body consists of mostly water and for every living organism to sustain themselves , there has to be enough water to quench thirst. But there is a scarcity of potable water for many. If water is available then it has to be processed in order to use for domestic purpose. Although there are ways to get water- by cooling air, rain water harvesting, desalination of ocean water, and other systems, water has to be treated to remove dissolved, suspended or other impurities to make it usable for drinking, industrial, pond or even fish tank.
In this overview, the different water purification systems are looked at for their “claimed” purification performances in a way to reach some conclusion for best purification system.
Water treatment consists of purification and disinfection which not only removes impurities in water including microbes but also makes it drinkable(addition of taste, removal of odor and color if any). Municipal water(first there that the water is “purified”) or tap water has to be checked up before getting water purification system especially for your home.There are various filtration systems and models available that not each one can be described here, so some basic that are used widely are mentioned here with their functionalities. Sediment filters or carbon filters (or membranes) have some pros and cons as well and so do RO(reverse osmosis filters- uses water pressure to purify) in conjunction with UV(ultra violet rays for removing microbes only). Ozonization and distillation are other method of purification. However, RO with UV systems are better treatments and used widely. One of the commercially available model contains 7 purification stages, mainly of : pre-filter purification, silver-impregnated activated carbon and RO purification. Bottled or mineral water also employ above mentioned systems mainly for treatments.
www.rei.com/learn/expert-advice/water-treatment-backcountry.html has some of the filters compared with one another and various options available.
Tags: water purification systems, water filters, water treatments, mineral water, water day.