Skip to main content

Sewershed Approach to Optimize Sewer System Operation

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.

or click here to sign up for a free trial


The City of Columbus, OH, Division of Sewerage and Drainage (DOSD) intends to construct a sanitary trunk sewer in the vicinity of the Jackson Pike WWTP to replace an existing segment of the Scioto Main Sanitary Trunk Sewer. The new Scioto Main Trunk Sewer Replacement (SMTR) will eliminate all overflow structures at the Renick Run area as part of the West Columbus Local Protection Project (WCLPP) administered by the U.S. Army Corps of Engineers.

Due to the complex hydraulics in the vicinity of the Jackson Pike WWTP a detailed dynamic model was developed to assess the sewer system performance under different operating conditions. The model used the sewershed approach to maximize system storage without affecting the current services and to satisfy the regulatory conditions to operate the sewer system.

The developed model investigated sewer system performance using 6-month, 1-, 2-, 5-, 25- and 100-yr storm events to optimize the operation of the collection system.

Initial model results indicated potential overflow at the Rhodes Park overflow using the 5-yr storm and above. After a series of model runs to optimize system operation and boundary conditions potential overflow at Rhodes Park is anticipated for storms above the 25-yr storm

The sewershed approach was used to satisfy the following objectives:

Provide primary and secondary treatment for combined and separate tributary flow due to dry weather flow and wet weather flow up to the 6-month storm.

Provide primary and secondary treatment at Jackson Pike WWTP for separate flow up to the 25-yr storm.

Provide primary treatment at Whittier Street Storm Tanks for combined flow due to the 1-yr storm frequency and above.

Maximize bypass flow from Jackson Pike WWTP to Southerly WWTP through the flow control structure to avoid backup in the Scioto Main Replacement Sewer.

Maximize in-line storage in the 156-inch Interconnector Sanitary Trunk Sewer.

Maximize pumping rates at the Interconnector Pump Station to its limit.

Regulate tributary flow from Scioto Main Trunk Sewer using the Hydrovex regulator to 60 MGD.

Provide in-line storage upstream the Hydrovex regulator to a maximum elevation of 720.00 feet to avoid overflow at Rhodes Park overflow.

The sewershed approach and the developed model allowed the determination of the optimum operating conditions by maximizing in–line storage while meeting all required constraints (e.g., overflow, pumping capacity, control flow devices, sewer capacity).

Document Type: Research Article


Publication date: January 1, 2001

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.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Ingenta Connect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial 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