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| Titel |
An experimental evaluation of the solute transport volume in biodegraded municipal solid waste |
| VerfasserIn |
H. Rosqvist, D. Bendz |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 3, no. 3 ; Nr. 3, no. 3, S.429-438 |
| Datensatznummer |
250001093
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| Publikation (Nr.) |
 copernicus.org/hess-3-429-1999.pdf |
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| Zusammenfassung |
| A large undisturbed sample (3.5 m3) of
22-year-old, biodegraded solid waste
set up to estimate the volume fraction participating in the transport of
solutes through the waste material. Altogether, five tracer tests were performed
under ponding and sprinkling conditions, and under steady-state and transient
conditions. The experimental break through curves (BTCs), which indicated a
non-equilibrium transport of the solute by early peaks and long right-hand
tails, were used to parameterize log-normal solute travel time probability
density functions. The expected solute travel times (i.e. the median solute
travel times) were assessed and the corresponding fraction of the experimental
volumes active in the transport of solutes was estimated. The solute transport
volume fractions defined by the median solute travel times were estimated to
vary between 5 and 10% of the total experimental volume. Further, the
magnitudes of the solute transport volume fractions defined by the modal (peak)
solute travel times were estimated to vary between 1 and 2% of the total
experimental volume. In addition, possible boundary effects in terms of rapid
flow along the wall of the experimental column were investigated. |
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