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IJESD 2016 Vol.7(4): 257-262 ISSN: 2010-0264
DOI: 10.7763/IJESD.2016.V7.780

The Effectiveness of Pretreatment Methods on COD and Ammonia Removal from Landfill Leachate

M. Poveda, Q. Yuan, and J. Oleszkiewicz

Abstract—The goal of this experiment is to evaluate the effectiveness of different leachate pre-treatment options in terms of COD and ammonia removal. This research focused on the evaluation of physical-chemical methods for pre-treatment of leachate that would be effective and rapid in order to satisfy the requirements of the sewer discharge by-laws. The four pre-treatment options evaluated were: air stripping, chemical coagulation, electro-coagulation and advanced oxidation with sodium ferrate. Chemical coagulation reported the best COD removal rate at 43%, compared to 18% for both air stripping and electro-coagulation, and 20% for oxidation with sodium ferrate. On the other hand, air stripping was far superior to the other treatment options in terms of ammonia removal with 86%. Oxidation with sodium ferrate reached only 16%, while chemical coagulation and electro-coagulation removed less than 10%. When combined, air stripping and chemical coagulation removed up to 50% COD and 85% ammonia.

Index Terms—Leachate pretreatment, air stripping, chemical coagulation, electro-coagulation, oxidation.

Q. Yuan and J. Oleszkiewicz are with the Department of Civil Engineering, University of Manitoba, Winnipeg, Canada, MB R3T 5V6 (e-mail: qiuyan.yuan@umanitoba.ca, jan.oleszkiewicz@umanitoba.ca).
M. Poveda is with University of Manitoba, Canada (e-mail: mariopq@gmail.com).

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Cite: M. Poveda, Q. Yuan, and J. Oleszkiewicz, "The Effectiveness of Pretreatment Methods on COD and Ammonia Removal from Landfill Leachate," International Journal of Environmental Science and Development vol. 7, no. 4, pp. 257-262, 2016.

General Information

  • ISSN: 2010-0264 (Print)
  • Abbreviated Title: Int. J. Environ. Sci. Dev.
  • Frequency: Monthly
  • DOI: 10.18178/IJESD
  • Editor-in-Chief: Prof. Richard Haynes
  • Executive Editor: Ms. Nancy Y. Liu
  • Indexing: Scopus (since 2019), DOAJGoogle ScholarCrossref, ProQuest, EBSCO, etc. 
  • E-mail: ijesd@ejournal.net