Estimating the hydraulic conductivity of landfilled municipal solid waste using the borehole permeameter test

    Authors

    P. Jain; J. Powell; T. G. Townsend;D. R. Reinhart

    Comments

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    Abbreviated Journal Title

    J. Environ. Eng.-ASCE

    Keywords

    boreholes; solid waste; municipal wastes; landfills; hydraulic; conductivity; Florida; ZONE PERMEABILITY TESTS; LEACHATE RECIRCULATING LANDFILLS; HEAD WELL; PERMEAMETER; MOISTURE TRANSPORT; AIR; REFUSE; WATER; FLOW; Engineering, Environmental; Engineering, Civil; Environmental Sciences

    Abstract

    This paper reports the in situ field saturated hydraulic conductivity of municipal solid waste at a landfill in Florida. The saturated hydraulic conductivity (K,) was estimated at 23 locations using the borehole permeameter test, a method commonly used for determination of the K-s of unsaturated soil. The K-s of the landfilled waste was found to range from 5.4 X 10(-6) to 6.1 X 10(-5) cm/s. The K-s was found to be on the lower end of the range of K, reported by previous studies. The hydraulic conductivity of the waste decreased with depth, the likely result of greater overburden pressures associated with deep locations of the landfill. Permeability values (k(w)) of the landfilled waste calculated based on K-s were compared with permeability values estimated using air as the fluid (air permeability, k(a)). Values of k(a) were found to be approximately three orders of magnitude greater than those of k(w). The lower permeability of the waste to water was primarily attributed to entrapped gas. Other factors such as potential clogging of media and short-circuiting of air along the well may also have contributed to the differences in k(a) and k(w).

    Journal Title

    Journal of Environmental Engineering-Asce

    Volume

    132

    Issue/Number

    6

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    645

    Last Page

    652

    WOS Identifier

    WOS:000241779100010

    ISSN

    0733-9372

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