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GEOSYNTHETICS INTERNATIONAL 2002, VOL. 9, NO. 1 41 Technical Paper by A.H. Aydilek and T.B. Edil
 

Summary: GEOSYNTHETICS INTERNATIONAL 2002, VOL. 9, NO. 1 41
Technical Paper by A.H. Aydilek and T.B. Edil
FILTRATION PERFORMANCE OF WOVEN
GEOTEXTILES WITH WASTEWATER
TREATMENT SLUDGE
ABSTRACT: Capping of contaminated soft sediments and sludges for in situ contain-
ment provides an efficient remediation alternative. Capping design typically involves the
useofgeosyntheticsformultiplefunctions,e.g.,reinforcement,separation,andfiltration.
Filtration performance becomes a decisive factor for proper long-term performance of
acap.Becauseofmultiplefunctionsrequired,wovengeotextilesareoftenthechoicegeo-
synthetic in such applications. A research program concerning the filtration behavior of
contaminatedwastewatertreatmentsludgeswasconducted.Thelaboratoryportion ofthe
program included a series of filtration tests with different woven geotextiles. Filtration
performance of the sludge-woven geotextile systems was also observed in field test cells.
Geotextile samples were exhumed from the cells after exposure and analyzed in the lab-
oratory. The results indicate that the sludges can be filtered using woven geotextiles and
theselection ofa proper filtercan bemade on the basis of geotextile porestructure param-
eters,i.e.percentopenareaandporeopeningsizedistribution.Thestandardgradientratio
test did not always reflect the filtration performance and, therefore, other clogging ratios
need to be considered. A commonly used geotextile pore opening size-to-soil particle

  

Source: Aydilek, Ahmet - Department of Civil and Environmental Engineering, University of Maryland at College Park

 

Collections: Engineering