Ottawa Installs Vortex Valves for CSOs

Hydro International, a provider of products and solutions for stormwater, wastewater and combined sewer overflows, will supply the city of Ottawa, Canada, with 940 Reg-U-Flo® Vortex Valve inlet control devices to alleviate basement flooding in the downtown area.

The city expects to install 485 devices in a two-phase project by the summer of 2009. Ottawa is planning to procure and install another 455 Hydro inlet control devices in mid-2009 as part of a large-scale upgrade of the drainage system in the O'Connor Street area, just south of the St. Lawrence River.

The city has reported a large number of basement flooding incidents over the years in the combined sewer area resulting from surcharging of the city's combined sewers, which carry wastewater and stormwater in the same pipes. When too much stormwater enters streetside catchbasins, the sewer can surcharge, leading to flooded basements in low-lying areas.

The city plans to use the vortex valves to restrict the stormwater flows into the combined sewers. High stormwater flows initiate a vortex within the valve, which has a snail or conical shape. The vortex restricts the water that can pass through the device. When head pressure builds, the vortex circulation allows an air core to form and prevents water from surging to the combined conveyance system.

"While we work on a long-term solution to our combined sewers, we needed to solve the basement flooding problem quickly," said Darryl Shurb, a senior project manager in the City of Ottawa Public Works and Services Department.

Download Center

  • Waste Management in 2021: Accelerate Your Success with Technology

    Join waste management experts on February 23rd for a live best practice session webinar. You’ll learn how to take your waste program to the next level with visual location, barcoding, and mobility. Register now.

  • Green Quadrant EHS Software 2021

    Reserve your copy of the new report by independent analyst firm, Verdantix, to get a detailed, fact-based comparison of the 22 most prominent EHS software vendors in the industry.

  • Your Guide to Environmental Metrics that Drive Performance

    Translating sustainability into action starts with implementing the right metrics to assess your environmental risk and performance. Learn how to design metrics that improve your decision-making process and drive enterprise performance.

  • 5 Keys to Best-in-Class Chemical Management

    Running a safe chemical program is challenging and complex: from knowing what's on-site to proper handling and disposal - all while navigating regulatory changes. Learn the best ways to mitigate chemical risk, get the most value out of your data, and gain buy-in for a chemical management solution.

  • Unpacking ESG: 6 Questions You Were Too Afraid to Ask

    Environmental and Sustainability experts from Arcadis and Cority answer 6 of the most pressing questions EHS professionals have about getting started with Environmental, Social, and Governance (ESG) reporting.

  • Industry Safe