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

Lennart Mårtensson, Staffan Bergström, Britt-Marie Svensson, Lennart Mathiasson

    Research output: Contribution to journalArticlepeer-review

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)17-27
    Number of pages10
    JournalInternational Journal of Environmental Analytical Chemistry
    Volume87
    Issue number1
    DOIs
    Publication statusPublished - 2007

    Swedish Standard Keywords

    • Natural sciences (1)

    Keywords

    • ADVANCED OXIDATION PROCESSES
    • BIODEGRADABILITY
    • FATE
    • FLAME RETARDANTS
    • JAPAN
    • ORGANIC POLLUTANTS
    • REMOVAL
    • SLUDGE
    • Treatment methods
    • ammonium
    • landfill leachate
    • metals
    • organic pollutants
    • waste

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