Development and application of an analytical protocol for evaluation of treatment processes for landfill leachates. II. Evaluation of leachate treatment efficiency of different steps in a constructed pilot plant

Authors: MÃ¥rtensson, Lennart¹; Bergström, Staffan²; Svensson, Britt-Marie²; Mathiasson, Lennart²

Source: International Journal of Environmental and Analytical Chemistry, Volume 87, Number 1, 15 January 2007 , pp. 17-27(11)

Publisher: Taylor and Francis Ltd

Abstract:

<p>Different methods for treatment of leachate from a municipal solid waste (MSW) landfill were tested in a pilot plant. Raw leachate was pre-treated with aeration and sedimentation, followed by several parallel individual steps such as bioremediation, chemical oxidation, ozonation, and geo-bed filters. The efficiency of different treatment steps was evaluated according to one previously developed protocol, which includes measurements of several parameters such as conductivity, pH, nutrients, chloride, metals, organic compounds, and acute toxicity before and after a treatment step. The treatment steps which showed the highest efficiency towards organic pollutants in leachate were ozone treatment and chemical oxidation. The use of an adsorption filter, a geo-bed with a mixture of peat and bottom ash with ca 10% remaining carbon, also had good effects. A combination of pre-treatment and a geo-bed filter with peat and carbon ash gave the best overall treatment results when water-quality parameters such as total organic carbon and ammonia-nitrogen were also considered.</p>

Keywords: Treatment methods; Landfill leachate; Waste; Organic pollutants; Metals; Ammonium

Document Type: Research article

DOI: http://dx.doi.org/10.1080/03067310600929233

Affiliations: 1: Department of Mathematics and Science, Kristianstad University, S-291 88 Kristianstad, Sweden 2: Department of Analytical Chemistry, Lund University, PO Box 124, S-221 00 Lund, Sweden

Publication date: 2007-01-15

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