Hi all,
What are the limitations of UltraViolet (UV) in disinfection of water? Apart from the limitation of using UV at point of treatment and distributing the treated water through a pipeline distribution network which might re-contaminate the water, what other limitations exist?
Thanks
Justin
Turbidity in water is one problem , apart from this it is not recomended for high contaimimnation.Also with UV disinfection storage time is limited. It is not effective in case of recontamination. Unlike of chlorine where residuals are mantained which can counter minor contaimination post disinfection. Storage time for disinfected water should not be more then 4 - 6 hours.
Published by Rakesh Sharma
Hello Justin,
The main problem, that can occur with an UV disinfection are turbidity problems in the water. The turbidity causes, that the uv light does not reach every part of the water and allowing bacteria to survive. Due to the availability of killed bacteria in the water, nutrients for a multiplication are available in the water. Turbidity can be caused by suspended solids as well as by air or gasses in the water. Further more UV resistance virus will survive an UV disinfection.
Those are the main issues, that can occur with an UV disinfection.
Regards,
Jan-Peter
Published by Jan-Peter Kiel, Owner and managing director at FLUIDTEC Flüssigkeitstechnologie
In several projects with changing water conditions we have moved from pure UV to AOP (Advanced Oxidation Process)systems. The effective free radicals of AOP will secure not only as disinfection but as a destruction of any unwanted material. We tend to call it "police guarding" the inlet.
I was trying to insert a direct link to the technical page of the product, but have problems pasting. If you send me an email to bjorn.dorum@enwa.com I can e mail you the link.
Regards Björn
Published by Bjorn Dorum, Director at Enwa Water Technology