Skip to main content

Determination of a Preferred Disinfection Strategy for the City of Toronto's Ashbridges Bay Treatment Plant

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

The Ashbridges Bay Treatment Plant (TP) currently uses chlorine addition to disinfect treated effluent prior to discharge through an outfall pipe with diffusers that distribute effluent into Lake Ontario. The Ashbridges Bay TP is fed by a collection system that includes many portions with combined sewers, and therefore experiences high, dilute flow during periods of rainfall and snow melt. During high flow periods, when the flow to the plant exceeds the capacity of the secondary treatment process, primary effluent (secondary bypass), which is only partially treated, is blended with the secondary treated effluent and discharged through the outfall. The existing outfall does not provide adequate hydraulic capacity for extreme peak flows. In addition, adequate chlorine contact time for disinfection is not provided. In light of the hydraulic capacity limitation and the insufficient disinfectioncontact time, the City is planning to construct a new outfall, with a compatible disinfection process to provide adequate capacity to disinfect and convey all flow into Lake Ontario. An environmental assessment study was conducted to determine the preferred disinfection strategy for both secondary effluent and secondary bypass flow from the plant and the results of that study are presented in this paper.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Keywords: UV disinfection; chlorination; dechlorination; wastewater disinfection

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 These proceedings are not peer reviewed.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