Abstract
Evaporation ponds are used in the disposal of saline waste produced by desalination plants. An increase in concentration of saline wastewater by evaporation reduces the resistance of clay-based lining material commonly used in evaporation ponds and increases the risk of groundwater pollution. Self-sealing lining materials can add resistance to the lining system against advective flow through their capacity of reacting with the saline waste, unlike other liners. The objectives of this research were to quantify the effect of electrical conductivity (EC) of solution, duration of ponding of solution, bulk density of lining material and porous media, and wet-dry cycles on the saturated hydraulic conductivity (Ks) of porous media through laboratory experiments. The Alamogordo variant very fine sandy loam (Tularosa soil) and #1 dry-silica sand/SIL-CO-SIL 125-silica (synthetic soil) were the two soils used in this study. Sodium silicate, calcium hydroxide and magnesium hydroxide, were the lining materials used in...
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