Skip to main content

Using Watershed-Scale Nutrient Modeling Approaches for Integrated Evaluation of Wastewater Treatment Alternatives

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


A consultant team was contracted to study wastewater treatment and nutrient control strategies necessary to meet nitrogen loading reductions in anticipation of nutrient Total Maximum Daily Load (TMDL) enactment for two coastal salt pond watersheds in Rhode Island. They employed a watershed-scale water quality model, the Soil and Water Assessment Toot (SWAT), to estimate nitrogen loadings to the salt ponds under several wastewater management scenarios. During development of the SWAT model for this study, modifications were made to the model to allow the input of water and nutrients from onsite wastewater treatment systems at specified depths in the soil profile. The modeling approach used in this study allowed a quantitative and transparent comparison between both centralized and decentralized wastewater management alternatives. Modifications to the SWAT model processes developed during this effort improved the simulation of nitrogen loadings from OWTS and can be applied to TMDL development efforts in other areas.

Keywords: SWAT model; TMDL; nitrogen reduction; nutrient modeling; onsite wastewater treatment system management

Document Type: Research Article


Publication date: January 1, 2009

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 These proceedings are not peer reviewed.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
Partial Open Access Content
Partial 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