Sharif Digital Repository

Leaking of leachate contamination into the clayey isolation layer at the bottom of the landfills is one of the most important environmental issues, which influences living creatures' lives by affecting groundwater quality. Coupled phenomena that play a role in contamination and fluid transportation in a saturated clayey layer are hydraulic and osmotic flow, diffusion and convection. The targeted contaminate of leachate is monovalent salts. The clayey layer is also saturated. According to the governing differential equation, membrane efficiency and hydraulic conductivity coefficients highly affect the contamination transport. Experimental results and existing models have shown that these...