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Factors affecting the performance of a pilot-scale constructed wetland treatment system for constituents of interest in simulated fresh oilfield produced water.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Factors affecting the performance of a pilot-scale constructed wetland treatment system for constituents of interest in simulated fresh oilfield produced water./
作者:	Alley, Bethany Lyn.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2014,
面頁冊數:	163 p.
附註:	Source: Dissertations Abstracts International, Volume: 78-04, Section: B.
Contained By:	Dissertations Abstracts International78-04B.
標題:	Toxicology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10159333
ISBN:	9781369143003

Factors affecting the performance of a pilot-scale constructed wetland treatment system for constituents of interest in simulated fresh oilfield produced water.
Alley, Bethany Lyn.

Factors affecting the performance of a pilot-scale constructed wetland treatment system for constituents of interest in simulated fresh oilfield produced water. - Ann Arbor : ProQuest Dissertations & Theses, 2014 - 163 p.

Source: Dissertations Abstracts International, Volume: 78-04, Section: B.

Thesis (Ph.D.)--Clemson University, 2014.

This item is not available from ProQuest Dissertations & Theses.

Fresh oilfield produced waters (FOPWs) can contain constituents [e.g. oil, cadmium (Cd), copper (Cu), nickel (Ni), and zinc (Zn)] that hinder its use for beneficial purposes such as irrigation and surface water discharge. Constructed wetlands may be a viable option for renovation of complex mixtures such as FOPW. For this study, a hybrid system [Dynasonic™ oil/water separator (Conroe, TX) followed by a CWTS] was constructed for removal of constituent in FOPW. Oil was measured as individual oil compounds (i.e. oil marker compounds) representing fractions (e.g. nonpolar, moderately nonpolar of oil) to generate data regarding rates and extents of removal of oil compounds by the oil/water separator and wetland cells. The overall objective of this research was to evaluate factors affecting the performance of a pilot-scale constructed wetland treatment system (CWTS). The specific objectives of this research were to: (1) determine chemical and physical characteristics of produced waters (PWs) from conventional (i.e. oil and natural gas) and unconventional (i.e. shale gas, coal-bed methane, tight gas sand) fossil fuel resources, (2) evaluate seasonal performance of a hybrid pilot-scale CWTS and removal processes for oil, Cd, Cu, Ni, and Zn from simulated FOPW, (3) measure removal of oil, Cd, Cu, Ni, and Zn from simulated FOPW in a pilot-scale CWTS as influenced by water depth, and (4) measure sorption of an oil marker compound, and Cd, Cu, Ni, and Zn from simulated FOPW by Schoenoplectus californicus C.A. Meyer and Typha angustifolia L. in a pilot-scale CWTS. PWs were characterized chemically and physically to discern constituent concentrations that pose risk to aquatic biota and to formulate a simulated PW for this research. Seasonal changes (e.g. temperature, evapotranspiration, photoperiod) can alter the performance of a hybrid CWTS. For this study, the hybrid CWTS removed ≥ 95% of the oil marker compound, and Cd, Cu, Ni, and Zn concentrations from the simulated FOPW. The use of different water depths (15, 23, 33, 46, and 56 cm) in a CWTS can enhance removal of constituents (e.g. oil marker compounds, and Cd, Cu, Ni, and Zn) from complex mixtures like FOPW. Removal of the oil marker compounds for the wetland series with water depths of 15 and 23 cm was greater (94-95%) than for the wetland series with water depths of 33, 46, and 56 cm (3-75%). However, treatment of Cd, Cu, Ni, and Zn in the wetland series with water depths of 46 and 56 cm was greater (95-98% removal) than for the wetland series with water depths of 15, 23, and 33 cm (5-75% removal). This study evaluated adsorption of an oil marker compound and sorption of Cd, Cu, Ni, and Zn by S. californicus and T. angustifolia in a sequential cell system to determine if sorbed concentrations affects plant health and ultimately long-term (~1-y) performance of a CWTS. There were no phytotoxic effects observed on the wetland plants and no significant decreases in performance during this study. A hybrid CWTS can be a viable option for the renovation of simulated FOPW containing elevated concentrations of oil, Cd, Cu, Ni, and Zn.

ISBN: 9781369143003Subjects--Topical Terms:

556884
Toxicology.
Subjects--Index Terms:

Constructed wetland

Factors affecting the performance of a pilot-scale constructed wetland treatment system for constituents of interest in simulated fresh oilfield produced water.
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