Sanjay Kumarasingham (Watercare Services Ltd) talks about how microorganisms1 and viruses are zapped by UV radiation2 with a wavelength3 of 254 nm.
Transcript
SANJAY KUMARASINGHAM
The ultraviolet disinfection4 is a very interesting process. By UV disinfection, you are basically killing the bad guys. There is a certain wavelength at which bugs5, viruses and pathogens6 become zapped. So all you have is ultraviolet light, and that is radiating out at a certain wavelength. And at 254 nanometres, the DNA7 structure of the microorganism8 gets dormant9. It affects the DNA structure so the bugs cannot reproduce. And for all intentions and purposes, it is considered to be dead. So what you have is a plant which has got the ability to zap the microorganisms, as it swims past the bugs, and at the end of it, you do not have any of these UV rays carrying through, nothing of that sort, because it’s actually at a microbial10 level affecting just the cells.
