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A comparison of small scale pilot-scale and large-scale tests for predicting leaching behaviour of landfilled wastes
Luleå tekniska universitet.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
2003 (English)In: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456, Vol. 23, no 1, p. 45-59Article in journal (Refereed) Published
Abstract [en]

Landfills generate emissions over long periods, often longer than a lifetime. The longest lasting emission is leachate. In order to estimate the future requirements for leachate treatment, different kinds of leaching tests may be applied. In this paper, shaking leaching tests (SLT), landfill-simulator leaching tests and a field-cell leaching test performed with ash, municipal solid waste (MSW) and MSW+ash are evaluated. The tests are compared and the factors influencing leaching are identified and discussed. The factors are: liquid to solid (L/S) ratio, water withdrawal, recirculation rate, presence or absence of biological processes, size of particles, duration of experiment, temperature and pre-treatment of the waste. The presence of biological processes has the greatest impact on leaching and is the main reason why SLT is less useful for long-term predictions. The landfill simulator tests were found to be useful for several different kinds of predictions. However, they are not reliable for predicting the L/S required for reaching a certain concentration. The possibilities for reliable long-term predictions would be facilitated by a better knowledge of the influence of various factors on leaching. Such an increased knowledge would make it possible to enhance waste stabilisation in leaching tests as well as in full-scale landfills.

Place, publisher, year, edition, pages
2003. Vol. 23, no 1, p. 45-59
National Category
Other Environmental Engineering
Research subject
Waste Science and Technology
Identifiers
URN: urn:nbn:se:ltu:diva-6964DOI: 10.1016/S0956-053X(02)00112-5Local ID: 54a40a80-6f5d-11db-962b-000ea68e967bOAI: oai:DiVA.org:ltu-6964DiVA: diva2:979850
Note
Validerad; 2003; 20060921 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Citation style
  • apa
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