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Effect of hydraulic retention time on landfill leachate and gas characteristics Munasinghe, Ranjani

Abstract

Previous field studies carried out in order to characterize leachate in Vancouver, B.C. landfills show an effect of water input patterns on leachate characteristics. With high rainfall into the landfills, high volatile fatty acid (VFA) concentrations appear in leachate. It is postulated that with high rainfall there is a reduction in hydraulic retention time (HRT) which results in a reduction in the conversion of VFA to CH4 and CC>2- Coincidence of peak infiltration rates with high dissolved organic carbon concentrations greatly increases the pollutant loadings to the treatment plants. The objective of the study was to investigate the effects of HRT on landfill leachate and gas characteristics. HRTs from 3 to 200 days were assigned to eighteen lab scale lysimeters during four experimental phases in which the HRT was changed by changing the infiltration rates through the lysimeters. A relationship was established between HRT and infiltration rate in refuse columns and tested using tracer studies. [Additional abstract]

Item Metadata

Title
Effect of hydraulic retention time on landfill leachate and gas characteristics
Creator
Munasinghe, Ranjani
Publisher
University of British Columbia
Date Issued
1997
Description
Previous field studies carried out in order to characterize leachate in Vancouver, B.C. landfills show an effect of water input patterns on leachate characteristics. With high rainfall into the landfills, high volatile fatty acid (VFA) concentrations appear in leachate. It is postulated that with high rainfall there is a reduction in hydraulic retention time (HRT) which results in a reduction in the conversion of VFA to CH4 and CC>2- Coincidence of peak infiltration rates with high dissolved organic carbon concentrations greatly increases the pollutant loadings to the treatment plants. The objective of the study was to investigate the effects of HRT on landfill leachate and gas characteristics. HRTs from 3 to 200 days were assigned to eighteen lab scale lysimeters during four experimental phases in which the HRT was changed by changing the infiltration rates through the lysimeters. A relationship was established between HRT and infiltration rate in refuse columns and tested using tracer studies. [Additional abstract]
Extent
12338892 bytes
Genre
Thesis/Dissertation
Type
Text
File Format
application/pdf
Language
eng
Date Available
2009-04-20
Provider
Vancouver : University of British Columbia Library
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
DOI
10.14288/1.0050195
URI
http://hdl.handle.net/2429/7444
Degree
Doctor of Philosophy - PhD
Program
Civil Engineering
Affiliation
Applied Science, Faculty of; Civil Engineering, Department of
Degree Grantor
University of British Columbia
Graduation Date
1997-11
Campus
UBCV
Scholarly Level
Graduate
Aggregated Source Repository
DSpace

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Rights

For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.