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Assessment of Bioretention Performance for Hydrology and Hydrocarbons
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| 자료유형 | 학위논문 |
|---|---|
| 서명/저자사항 | Assessment of Bioretention Performance for Hydrology and Hydrocarbons. |
| 개인저자 | Tamkin, Abigail. |
| 단체저자명 | The Ohio State University. Food, Agricultural and Biological Engineering. |
| 발행사항 | [S.l.]: The Ohio State University., 2019. |
| 발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2019. |
| 형태사항 | 145 p. |
| 기본자료 저록 | Dissertations Abstracts International 81-02A. Dissertation Abstract International |
| ISBN | 9781085659222 |
| 학위논문주기 | Thesis (Ph.D.)--The Ohio State University, 2019. |
| 일반주기 |
Source: Dissertations Abstracts International, Volume: 81-02, Section: A.
Advisor: Martin, Jay. |
| 이용제한사항 | This item must not be sold to any third party vendors. |
| 요약 | Bioretention is an increasingly prevalent green infrastructure practice for urban and suburban stormwater management. While research has shown the ability of this technology to reduce stormwater volume and improve stormwater quality, there is a gap in knowledge regarding long term performance. Additionally, hydrocarbons are an important but understudied stormwater pollutant. Column studies indicate bioretention is an effective treatment technology for reducing hydrocarbons in stormwater flows, but there is limited research confirming this performance in field settings. To address both of these concerns, simultaneous studies were performed evaluating the hydrological performance and hydrocarbon removal of a bioretention cell six years post installation. Nine simulated storms (3.5 mm equivalent storm) were conducted, with eight of those sampled for hydrocarbon concentrations. Despite an apparent increase in preferential flow as indicated by rapid bromide tracer breakthrough and accelerated water table response rates, there was no significant difference in volume reduction between 2011 (average 53%) measurements and those done in this study (2015-2016: average 69%), after accounting for runoff volume differences. These results indicate continued effective operation of this facility, at least during small events. The effective operation was possibly due to location (suburban neighborhood) and maintenance (~monthly sediment removal).Hydrocarbon mass reductions in bioretention tests (83%), measured as total petroleum hydrocarbons, were similar to other studies while concentration reductions were lower (53%), possibly due to low input concentrations (0.58 mg/L). Hydrocarbon concentrations in the soil were higher in the upslope cell, indicating historical accumulations. However, within each cell, concentrations did not vary significantly over the year of study, indicating steady state conditions and no accumulation during the period of study. Comparisons of hydrocarbon concentrations in bioretention soil to previous studies were complicated by differences in analytical methods (extraction solvent and method). These differences suggest a need for consistency in hydrocarbon quantification methods, particularly when used for assessment of accumulation in bioretention.Towards this need for method consistency and the effect of weathering on hydrocarbon quantification, chapter three had two main goals |
| 일반주제명 | Sustainability. Biogeochemistry. Environmental engineering. |
| 언어 | 영어 |
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