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Assessing and Characterizing the Efficacy of the Constructed Wetland for Treating Pollutants in Landfill Leachate

Busarakum, Chadaporn
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1469701219

Abstract Details

2016, Master of Science (MS), Ohio University, Geological Sciences (Arts and Sciences).
Constructed wetlands are one of the effective wastewater treatment systems which have been utilized since 1950s. Characterizing landfill leachate and monitoring the treatment system are important for operation and development of the system. The objectives of this study were to delineate hydrologic and chemical processes occurring in the constructed wetland which has been treating landfill leachate from Athens 691 Landfill in Ohio since 1996. The treatment system consisted of six wetland cells. The leachate has high levels of BOD5, COD, ammonia, and metals, and low pH and low DO. Field parameters, inflow and outflow rates between wetland cells, and water isotopes were measured monthly to monitor water quality, flow, and storage change. The storage change in each month was corresponded to inflow and outflow rates. Seasonal water samples were collected from the wetland cells and analyzed for water chemistry and water isotopes to evaluate removal efficiencies. The results indicate that the average removal efficiencies of iron, manganese, ammonia, and sulfate were 99 %, 94 %, 84 %, and 69 %, respectively. The results from PHREEQCI indicated that iron and sulfide minerals were precipitating. The modeled data were in keeping with the observed metal concentrations which were decreasing as the water flows through the treatment cells. The removal efficiencies of ammonia, nitrate, BOD5, and COD were influenced by the seasonal variations of water temperature which constrains biological processes. Results of this study suggest that the constructed wetland could provide efficient and long-term option for treating landfill leachate in cost effective manner.
Eung Seok Lee (Advisor)
128 p.
Environmental Geology; Geology; Hydrology
Athens 691 Landfill; constructed wetland; constructed wetland treatment efficiency; inverse modeling; PHREEQCI

Recommended Citations

Citations

  • Busarakum, C. (2016). Assessing and Characterizing the Efficacy of the Constructed Wetland for Treating Pollutants in Landfill Leachate [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1469701219

    APA Style (7th edition)

  • Busarakum, Chadaporn. Assessing and Characterizing the Efficacy of the Constructed Wetland for Treating Pollutants in Landfill Leachate . 2016. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1469701219.

    MLA Style (8th edition)

  • Busarakum, Chadaporn. "Assessing and Characterizing the Efficacy of the Constructed Wetland for Treating Pollutants in Landfill Leachate ." Master's thesis, Ohio University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1469701219

    Chicago Manual of Style (17th edition)

ohiou1469701219
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© 2016, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.