There are several water treatment methods, each of which is based on a particular technique. Some of the common water purification methods are sedimentation or settling, boiling, chemical disinfection and filtration. In addition, there are other water treatment types, which are discussed as follows:

     Ultraviolet Water Treatment

     In the ultraviolet treatment, the water to be treated is passed through germicidal ultraviolet (UV) light configured inside a low pressure lamp. As the water passes the ultraviolet purifier, the biological contaminants are exposed to UV light, which damages the genetic components of the microbes. This way, the microbes are killed by using ultraviolet water treatment. A major drawback of this water treatment type is that it is ineffective in removal of dissolved chemicals and other particulate matter.

     Ozone Water Treatment

     Ozone, a colorless and unstable gas, is effective for killing the biological contaminants than that of chemical disinfection method like chlorination. Other than this, it also reduces odor problems and concentrations of iron, sulfur, manganese and other dissolved chemicals. In this water treatment type, an ozonation system is used that generates ozone gas, which is then dissolved in the raw water for treatment. The disadvantages of ozone water treatment are mild carcinogenic by-products and high cost of operation. Read more »