Skip to main content

Ozone-Enhanced UV Disinfection at the Indianapolis Belmont Advanced Wastewater Treatment Plant

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial


Considering the need for a doubling of its current disinfection capacity at the Belmont Advanced Wastewater Treatment Plant, the City of Indianapolis embarked on an extensive conceptual evaluation of disinfection alternatives including permutations between ozonation, UV irradiation and chlorination/dechlorination. The objectives were to maximize the use and benefits from the existing assets, while providing additional disinfection capacity that is both reliable and cost-effective. Key points of the conceptual evaluation, which includes both monetary and non-monetary considerations, are presented. The selected disinfection plan relies on an unusual hybrid of three methods of disinfection (UV irradiation preceded by low dose ozonation during dry weather, augmented with chlorination/dechlorination during wet weather) and presents multiple synergies (UV transmittance, double-barrier approach) and benefits (dissolved oxygen, utilization of existing ozone system). The case of the Indianapolis Belmont plant provides a large-scale illustration of the challenges associated with designing a pre-ozonated UV system within an existing plant, including the assessment of the benefits from pre-ozonation that are specific to this utility, the selection of appropriate design UV transmittance values, the retrofit design of a UV system into a restricted hydraulic profile, and the development of design documents to allow competitive bidding of multiple equipment suppliers.

Keywords: Disinfection; UV; design; pre-ozonation

Document Type: Research Article


Publication date: 2011-01-01

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 These proceedings are not peer reviewed.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