Skip to main content
Duke University Libraries
DukeSpace Scholarship by Duke Authors
  • Login
  • Ask
  • Menu
  • Login
  • Ask a Librarian
  • Search & Find
  • Using the Library
  • Research Support
  • Course Support
  • Libraries
  • About
View Item 
  •   DukeSpace
  • Theses and Dissertations
  • Nicholas School of the Environment
  • View Item
  •   DukeSpace
  • Theses and Dissertations
  • Nicholas School of the Environment
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Pollution Removal Efficiency in a Restored Anabranching Wetland

Thumbnail
View / Download
831.7 Kb
Date
2013-04-26
Author
Shashy, Peter Scott Jr.
Advisor
Richardson, Curt
Repository Usage Stats
187
views
392
downloads
Abstract
Improving water quality is a serious concern of many state and local governments across the U.S. Nutrients, including nitrogen and phosphorus, can significantly impair water quality when found in high concentrations. Constructed and restored wetlands are known to capture pollutants and improve water quality. Anabranching is a new design for restored wetlands in which a primary stream is diverted into smaller braided streams and wetland cells. Its effectiveness at capturing pollutants has not yet been evaluated. This study investigates the effectiveness of an anabranched wetland at removing total nitrogen and total phosphorus from urban run-off during several winter storm events. The analysis compares the mass balances of total nitrogen and total phosphorus flowing into and out of the restoration area to determine the amount of nutrient reduction. Flow regimes were manipulated to divert water out of or into a stream or wetland cells. Stream and wetland configurations were compared to determine the effectiveness of the wetland cells in nutrient removal compared to streams alone. Results show that for a given discharge, wetland cells have a residence time up to six times longer than streams. Results indicate that streams may be effective at capturing total phosphorus during low discharge events and ineffective at capturing total phosphorus during high discharge events; the stream configuration does not appear to capture total nitrogen on a consistent basis. Wetland cells appear to be ineffective at retaining total nitrogen over winter storm events; wetland cells may be able to more effectively retain total phosphorus, but this pattern is inconsistent. Results show no clear relationships between discharge and nutrient removal efficiency for the stream or wetland configuration, which is noted in this limited study.
Type
Master's project
Department
Nicholas School of the Environment and Earth Sciences
Subject
restored wetland, anabranching wetland, nutrient retention, nutrient removal efficiency
Permalink
https://hdl.handle.net/10161/6891
Citation
Shashy, Peter Scott Jr. (2013). Pollution Removal Efficiency in a Restored Anabranching Wetland. Master's project, Duke University. Retrieved from https://hdl.handle.net/10161/6891.
Collections
  • Nicholas School of the Environment
More Info
Show full item record
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.

Rights for Collection: Nicholas School of the Environment


Works are deposited here by their authors, and represent their research and opinions, not that of Duke University. Some materials and descriptions may include offensive content. More info

Make Your Work Available Here

How to Deposit

Browse

All of DukeSpaceCommunities & CollectionsAuthorsTitlesTypesBy Issue DateDepartmentsAffiliations of Duke Author(s)SubjectsBy Submit DateThis CollectionAuthorsTitlesTypesBy Issue DateDepartmentsAffiliations of Duke Author(s)SubjectsBy Submit Date

My Account

LoginRegister

Statistics

View Usage Statistics
Duke University Libraries

Contact Us

411 Chapel Drive
Durham, NC 27708
(919) 660-5870
Perkins Library Service Desk

Digital Repositories at Duke

  • Report a problem with the repositories
  • About digital repositories at Duke
  • Accessibility Policy
  • Deaccession and DMCA Takedown Policy

TwitterFacebookYouTubeFlickrInstagramBlogs

Sign Up for Our Newsletter
  • Re-use & Attribution / Privacy
  • Harmful Language Statement
  • Support the Libraries
Duke University