Effect of grain size on service life of MSW landfill drainage systems

A numerical model “BioClog-2D” is used to examine the service life and clogging of leachate collection systems with granular drainage material of different grain sizes. The modelling shows that the leachate characteristics at the end of the drainage pipe are significantly different from those in the leachate entering the leachate collection system and this reduction in leachate strength corresponds to an accumulation of clog mass within the saturated drainage layer. The calculated clog mass within the saturated drainage layer is dominated by the inorganic material, which is in encouraging agreement with field-observed data. The service life of leachate collection systems is increased with an increase in the grain size of the drainage material and decreased with an increase in the length of the drainage path. The service life of the drainage layer is shown to vary from a few years to over 100 years depending on the design of the system. The results indicate that in addition to the particle size of the gran...

[1]  R. Rowe,et al.  Biologically induced clogging of a granular medium permeated with synthetic leachate , 2002 .

[2]  R. Rowe,et al.  Influence of landfill leachate suspended solids on clog (biorock) formation. , 2004, Waste management.

[3]  R. Rowe,et al.  Application of the BioClog model for landfill leachate clogging of gravel-packed columns , 2005 .

[4]  I R Fleming,et al.  Laboratory studies of clogging of landfill leachate collection and drainage systems , 2004 .

[5]  Bruce E. Rittmann,et al.  Modelling species fate and porous media effects for landfill leachate flow , 2005 .

[6]  R. Rowe,et al.  Effect of filter-separators on the clogging of leachate collection systems , 2006 .

[7]  H. Ehrig.  Water and element balances of landfills , 1989 .

[8]  R. Rowe,et al.  Evolution of clog formation with time in columns permeated with synthetic landfill leachate. , 2004, Journal of contaminant hydrology.

[9]  J. Istok.  Groundwater Modeling by the Finite Element Method , 1989 .

[10]  K. Pinder,et al.  Effective diffusivities of volatile fatty acids in methanogenic biofilms , 1994 .

[11]  R. K. Rowe,et al.  Field observations of clogging in a landfill leachate collection system , 1999 .

[12]  R. Kerry Rowe,et al.  Particle Size and Clogging of Granular Media Permeated with Leachate , 2000 .

[13]  Jagath J. Kaluarachchi,et al.  Analytical solution to two-dimensional axisymmetric gas flow with Klinkenberg effect , 1995 .

[14]  W. Powrie,et al.  Removal of volatile acids from synthetic landfill leachate by anaerobic biofilms on drainage aggregates: a laboratory study , 1999 .

[15]  Vernon L. Snoeyink,et al.  Achieving Biologically Stable Drinking Water , 1984 .

[16]  A. J. Cardoso,et al.  Assessment of Biogeochemical Deposits in Landfill Drainage Systems , 2005 .

[17]  R. Kerry Rowe,et al.  Clogging of Gravel Drainage Layers Permeated with Landfill Leachate , 2007 .

[18]  Improved Solutions for Porosity and Specific Surface of a Uniform Porous Medium with Attached Film , 2012 .

[19]  Jeffrey Bass,et al.  Avoiding Failure of Leachate Collection and Cap Drainage Systems , 1986 .

[20]  Chi Tien,et al.  Granular Filtration of Aerosols and Hydrosols , 2007 .

[21]  R. Maliva,et al.  Unusual calcite stromatolites and pisoids from a landfill leachate collection system , 2000 .

[22]  R. Rowe,et al.  Modelling landfill leachate-induced clogging of field-scale test cells (mesocosms) , 2008 .

[23]  Stewart W. Taylor,et al.  Biofilm growth and the related changes in the physical properties of a porous medium. 3. Dispersivity and model verification. , 1990 .

[24]  Bruce M. McEnroe,et al.  Drainage of Landfill Covers and Bottom Liners: Unsteady Case , 1989 .

[25]  Bruce M. McEnroe,et al.  Maximum Saturated Depth over Landfill Liner , 1993 .

[26]  Yan Yu,et al.  Modeling of Leachate Collection Systems with Filter Separators in Municipal Solid Waste Landfills , 2013 .

[27]  Armstrong,et al.  Mass loading and the rate of clogging due to municipal solid waste leachate , 2000 .

[28]  YuYan,et al.  A practical technique for estimating service life of MSW leachate collection systems , 2013 .

[29]  W. Powrie,et al.  A laboratory investigation of anaerobic microbial clogging in granular landfill drainage media , 1998 .

[30]  R. Rowe,et al.  Parameter estimation for modelling clogging of granular medium permeated with leachate , 2008 .

[31]  E. J. Wilson,et al.  Liquid Mass Transfer at Very Low Reynolds Numbers in Packed Beds , 1966 .

[32]  K. Howard,et al.  A Comparison of Field and Laboratory Methods for Determining Contaminant Flow Parameters , 1987 .

[33]  R. Rowe.  Long-term performance of contaminant barrier systems , 2005 .

[34]  Yan Yu.  MODELLING MSW LEACHATE CHARACTERISTICS AND CLOGGING , 2012 .

[35]  E. Frind.  Solution of the advection‐dispersion equation with free exit boundary , 1988 .

[36]  YuYan,et al.  Modelling leachate-induced clogging of porous media , 2012 .

[37]  R. Kerry Rowe,et al.  2D modelling of clogging in landfill leachate collection systems , 2008 .

[38]  R. Rowe,et al.  Modeling of Leachate Characteristics and Clogging of Gravel Drainage Mesocosms Permeated with Landfill Leachate , 2013 .

[39]  Paul A. Witherspoon,et al.  Analysis of Nonsteady Flow with a Free Surface Using the Finite Element Method , 1971 .

[40]  R. Rowe,et al.  Predicting Biogeochemical Calcium Precipitation in Landfill Leachate Collection Systems , 2003, Biodegradation.