Monitoring the Removal of Estrogenic Activity in Wastewater Treated by a Pilot-Scale Constructed Wetland using the Yeast Estrogen Screen Public Deposited

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  • March 21, 2019
Creator
  • McDermott, Kathleen
    • Affiliation: Gillings School of Global Public Health, Department of Environmental Sciences and Engineering
Abstract
  • Wastewater spiked with chemicals representing persistent contaminants was applied to a pilot-scale constructed wetland containing a locally sourced substrate on which a biofilm had developed. The system utilized aerobic, hypoxic, and aerobic columns, and was evaluated for its removal of estrogenic activity from wastewater using the yeast estrogen screen, as a function of five different dosing intervals. The removal of activity, as measured by estrogen equivalents (EEQ), decreased as the length of the dosing interval increased, with an 8 hour dosing interval achieving the highest removal at 99.9%. For all dosing studies, higher removals in activity were achieved by employing the columns in series than was achieved by any one column individually. Moreover, it was found that hypoxic conditions resulted in a higher removal of EEQ, suggesting that a resequencing of the full scale system might improve the finished water quality.
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  • In Copyright
Advisor
  • Fry, Rebecca
  • Weinberg, Howard
  • Whalen, Stephen
Degree
  • Master of Science
Degree granting institution
  • University of North Carolina at Chapel Hill
Graduation year
  • 2017
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