Landfill leachate clogging of geotextile (and soil) filters project summary (SuDoc EP 1.89/2:600/S 2-91/025)

Disposing of solids waste to landfill is regarded as one of the most economical means of handling waste though landfills pose pollution threat to both ground and surface water resources. However, landfill liners and good landfill management practices may reduce the impact of water contamination by landfills. Chemical analysis of groundwater beneath and near two landfills from New Zealand and Lesotho (in Southern Africa) showed that there are higher concentrations of chemicals such as Chlorides, TDS and COD than average. The water was also found to contain higher amounts of heavy metals. High concentrations of chemical constituents, such as those found in leachate contaminated water may cause various health complications in humans if consumed. To minimize possible hazards due to landfill leachate, future landfills must be lined at the base and sides by a combination of clay, geosynthetic clay and high-density polyethylene liners.

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