ENVE 322 Homework 2 with solutions - Question 3 An old...

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Question 3: An old landfill, 300m by 500m in plan, was constructed at a site having 1 m thick dense clay layer with a hydraulic conductivity of 5*10 -7 cm/s. The average leachate head in the landfill (on top of the clay liner) is 0.50m. The clay liner is fully saturated with leachate; and the leakage of leachate at the bottom of the clay occurs freely into the underlying aquifer. An analysis of leachate indicates a concentration, C, of carbon tetrachloride of 1.0 mg/L among other contaminants. (a) calculate the annual steady-state leachate flow (leakage) rate from the landfill bottom (b) calculate the annual advective carbon tetrachloride mass flow (leakage) rate from the landfill (clay layer) bottom; (c) calculate the annual diffusive mass flow through the
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  • Fall '16
  • Trigraph, Methane, Landfill, clay liner

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