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Predicting Influent Estradiol and Estrone Concentrations for Wastewater Treatment Facilities

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An externally validated model was developed to predict influent concentrations of natural estrogens at municipal wastewater plants. The model kinetic constant for the first-order biotransformation of estradiol into estrone, k E2, was calculated as 0.030 hour −1 (ranging from −0.080 to 0.49 hour −1, with a standard deviation of 0.23) and the model value for the biodegradation k of estrone, k E1, was −0.18 hour −1(ranging from −0.44 to 0.38 hour −1, with a standard deviation of 0.3). The k values were not found to be temperature-sensitive within the range 12 to 24.5°C and displayed a weak trend of increasing with total suspended solids within the range 0.103 to 0.450 g/L. The new model improved on the predictions of a previous model for influent estrone concentrations, but gave comparable results for estradiol.

Keywords: endocrine; modeling; wastewater collection systems

Document Type: Research Article


Affiliations: Department of Civil and Environmental Engineering, Michigan Technological University, Houghton, Michigan.

Publication date: February 1, 2009

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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