Selection of Bottom Liner for Land Disposal of Industrial Waste Containing Lead-Case Study: Tabriz Petrochemical Complex
2007
Mohsen Soltani | Edwin Safari | Akbar Baghvand | Mohammad Ali Abduli
Industrial wastes generated at Tabriz Petrochemical Complex (TPC) were shown to contain significant concentration of lead. Environmentally sound landfilling of these waste streams was studied in terms of potential risk of associated groundwater contamination. The waste was to be disposed of in a landfill overlying an aquifer of fine sand texture and a water table depth of about 9 m. A modeling approach was employed for estimating the concentration of lead in groundwater downstream of the landfill site. The Industrial Waste Evaluation Model (IWEM) developed by US Environmental Protection Agency was used which estimates the receptor dose of lead, calculates the associated human health risk and recommends protective measures (i.e., liner type). Accordingly the appropriate liner being of composite type was selected as the required protective measure to minimize the transport of lead to the underlying aquifer which is a major source of drinking water for the downstream residential communities.
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