Skip to main content


Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Treated wastewaters to be disinfected with ultraviolet (UV) radiation can be divided into three water quality groups: 1) high ultraviolet transmittance at 254 nm (UVT254 -90 percent and above), 2) medium UVT254 (40s to 80s percent) and 3) low UVT254 (below 40 percent). High UVT254 waters are secondary effluents that have received additional treatment with micro, ultra, or nano filters and in combination with reverse osmosis, and would be an easy application for UV disinfection. Medium UVT254 waters usually are secondary effluents and sand media filtered secondary effluent, which have well established UV applications. Low UVT254 waters are primary effluents or any other lower water quality effluents that are to be disinfected with typically unknown UV reactor performance.

Regardless which water quality will be disinfected, there is a four step process (using the actual wastewater) that has to considered when judging the applicability of UV disinfection. Those four steps are effluent water-quality characterization, bench-scale evaluation (collimated beam dose-response curves), pilot-scale evaluation (pilot unit dose-response curves), and full-scale evaluation (dose-response curves and microbial monitoring). Other questions that must be answered include:

What type of lamp/s would be best? Low-pressure, low-intensity or low-pressure, highoutput or low-pressure, high-intensity or medium-pressure, high-intensity.

Which automatic cleaning system (mechanical or mechanical/chemical) will meet the cleaning needs?

Will fats, oils, and greases (FOG) coat lamp sleeves?

What is the wastewater velocity through the reactor and what influence does it have on the reactor efficiency?

What lamp and/or lamp sleeve configuration changes can reduce the low UVT254 water quality impacts on the reactor?

The results from the bench-scale and pilot-scale evaluations will be expanded on in the paper including the physical and microbial water quality.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 2001-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more