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Article
Contemporary Environmental Issues of Landfill Leachate: Assessment and Remedies
Critical Reviews in Environmental Science and Technology (2015)
Abstract

Landfills are the primary option for waste disposal all over the world. Most of the landfill sites across the world are old and are not engineered to prevent contamination of the underlying soil and groundwater by the toxic leachate. The pollutants from landfill leachate have accumulative and detrimental effect on the ecology and food chains leading to carcinogenic effects, acute toxicity, and genotoxicity among human beings. Management of this highly toxic leachate presents a challenging problem to the regulatory authorities who have set specific regulations regarding maximum limits of contaminants in treated leachate prior to disposal into the environment to ensure minimal environmental impact. There are different stages of leachate management such as monitoring of its formation and flow into the environment, identification of hazards associated with it, and its treatment prior to disposal into the environment. This article focuses on: (i) leachate composition, (ii) plume migration, (iii) contaminant fate, (iv) leachate plume monitoring techniques, (v) risk assessment techniques, hazard-rating methods, mathematical modeling, and (vi) recent innovations in leachate treatment technologies. However, due to seasonal fluctuations in leachate composition, flow rate, and leachate volume, the management approaches cannot be stereotyped. Every scenario is unique and the strategy will vary accordingly. This article lays out the choices for making an educated guess leading to the best management option. Link to Full-Text Articles : http://www.tandfonline.com/doi/abs/10.1080/10643389.2013.876524#.VREhUo7fXP8

Keywords
  • landfill leachate plume,
  • hazard identification,
  • treatment technologies,
  • pollution,
  • municipal solid-waste,
  • sequencing batch reactor,
  • dissolved organic-carbon,
  • powdered activated carbon,
  • membrane bioreactor technology,
  • different treatment strategies,
  • response-surface methodology,
  • advanced oxidation processes,
  • biological nitrogen removal,
  • size distribution analysis
Publication Date
March 4, 2015
Publisher Statement
At7rt Times Cited:0 Cited References Count:497
Citation Information
"Contemporary Environmental Issues of Landfill Leachate: Assessment and Remedies" Critical Reviews in Environmental Science and Technology Vol. 45 Iss. 5 (2015)
Available at: http://works.bepress.com/facultyofengineering_universityofmalaya/182/