Clayey barrier assessment for impoundment of domestic waste leachate (southern Ontario) including clay - leachate compatibility by hydraulic conductivity testing

摘要: The current use of engineered clayey barriers to control the chemical flux entering groundwater adjacent landfill sites is discussed. New analytical methods predict flux–time relationships controlled by advection and diffusion are presented briefly, followed an assessment macropore flow problems inherent in laboratory especially field-compacted clays.The clay–leachate compatability southern Ontario (Sarnia) clays then assessed with respect domestic waste leachate using hydraulic conductivity as tool. dominant role channel through macropores, even very carefully samples, emphasized, critical soil smectite vermiculite retardation species such K+ from leachate.The Sarnia brown grey seem compatible at least conductivity, k. In spite extensive retardation, effected a slight decrease k water-compacted...