UV radiation system is one method to purify water for drinking in homes. Other ways we can improve the quality of contaminated water are point-of-entry (POE) and point-of-use (POU) treatment systems. POE filtration systems treat water to the whole house from the water mains. POU filtration system can be undersink filters, counter-top or tabletop filters, pitcher or carafe filters, faucet mounted water filters , showerhead water filters . These systems treat water at the tap. UV treatment can also come in form of POE and POU systems.
RO-15-TFC-ASO-UV Reverse Osmosis System with Ultraviolet by WaterSafe and Aquacheck  | UV treatment systems are designed to kill or inactivate the microorganisms so they can no longer reproduce and contaminate water. The radiation from UV light is powerful enough modify the genetic (DNA) code or material in cells so that bacteria, viruses, molds, algae and other microorganisms can no longer survive, reproduce, or contaminate drinking water. Ultraviolet systems can reduce as many as 99% of bacteria or viruses in the water. The ultraviolet radiation system can be used in combination with activated carbon or RO filters to remove metals and particulates that may shield the microorganisms from UV light. Effectiveness of an ultraviolet radiation system depends on the intensity of the lamp. The minimum dose of UV light to inactivate bacteria is 38mWs/cm2 set by the NSF International under NSF/ANSI Standard 55 as the performance for Class A systems. For a UV radiation system to work, the UV Transmittance (UVT)—measured in percentage—must be very high. Low UVT will not allow enough UV light to penetrate into the bacteria cells.
| Benefits of a UV Radiation in Water Treatment
UV radiation will not leave behind any toxic substances. It requires shorter contact time than chlorination. The drawback is that they will not remove suspended materials.
Best UV Water Filter Tips
Choosing a water filter can be a daunting task. But knowledge is power! Some of the tips here will help you choose the best UV filter. Your filter may or may not be expensive, the bottom line is, and it must be effective to completely kill all the harmful bacteria and viruses in your water. If possible, look for an NSF-certified UV filter. |
