Skip to main content

Laying the Foundation for Regulatory Approval for a Wet Weather Chemically Enhanced High Rate Treatment Facility

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

The Metropolitan Sewer District of Greater Cincinnati (MSD) Sycamore Wastewater Treatment Plant is located in northeast Hamilton County in southwest Ohio adjacent to the Little Miami River. Recent analysis of influent flow rates shows that the plant is frequently operating in excess of its design flow of 6 million gallons per day (mgd). In addition, the plant lacks sufficient capacity to treat all influent wet-weather flows due to excessive rainfall-dependent infiltration and inflow (RDI/I) entering the upstream sanitary sewer collection system.

MSD proposes as a first phase the addition of a chemically enhanced high rate separation (CEHRS) system, ultraviolet disinfection (UV), and effluent pumping. These changes to the facility will increase the average capacity to 9 mgd and provide capacity for a projected peak wet weather flow of 50 mgd. During wet weather, flows in excess of 18 mgd will be treated by passing it through the new CEHRS facility, while flows less than 18 mgd will be treated through conventional secondary treatment.

The Little Miami River, to which Sycamore Creek discharges, is recognized as an environmentally sensitive stream. The Little Miami River is also designated as a State and National Resource Water for Primary Contact Recreation. MSD wants to develop a permitting strategy that is both technically defensible and recognizes stakeholders concerns. The adopted strategy must demonstrate to Ohio EPA and the interested public through the NPDES permitting process and Anti-Degradation review that the use of CEHRS technology coupled with the addition of conventional treatment technology will reduce the pollutant load entering the Little Miami River, thus improving water quality.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2002-01-01

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 These proceedings are not peer reviewed.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
X
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