Document Type : علمی - پژوهشی
Department of Environmental Sciences, Research Institute, Shahid Beheshti University, Tehran
Bottom sludge generated in evaporation ponds is one of the most important wastes in combined cycle power plants. Since previous studies show that wastewater incoming to evaporation ponds contains various contaminants, so the settled sludge can be mentioned as a hazardous waste. Waste characterization showed high concentration of heavy metals (i.e. Lead and Chromium) and Total Petroleum Hydrocarbons in the generated sludge. Regarding to classification criteria of the Basel Convention and other international instructions (such as EPA) revealed this waste can be categorized as a hazardous waste. Then all possible methods for sludge management was evaluated based on technical, economic and environmental aspects and land disposal was selected as preferred method. Finally various scenarios including landfill and surface impoundment were considered. To avoiding penetration of contaminants to the environment, IWEM model was used to design of bottom lining system where different environmental scenarios and leakage concentrations was evaluated.
- ]1[ Sadeghi, M., Golavar, L., Abedi, z. 2007. Economic and environmental consequences of increasing the efficiency of fossil power plants. Journal of Environmental Science and Technology, 9 (4), 15-30. ] In Persian[
- ]2[ Saeedi, M., Karbasi, A., Sohrab, T., Samadi, R. 2005. Environmental management of power plants. Ministry of Energy. ] In Persian[
- ]3[ Moshanir. 2011. Environmental impact assessment studies for Jahrom combined cycle power plant. ] In Persian[
- ]4[ Saeedi, M., Amini, H. R. 2007. Characterization of a thermal power plant air heater washing waste: a case study from Iran. Waste management & research, 25(1), 90-93.
- ]5[ Gildeh, H. K., Saeedi, M., Eshtehardian, E., Taheriattar, R. 2013. Solidification/Stabilization of Sludge Waste from Thermal Power Plants Using Portland Cement. Journal of Frontiers in Construction Engineering Mar, 2(1), 10-16.
- ]6[ ÄudiÄ, V., KisiÄ, D., StojiljkoviÄ, D., JoviÄ, A. 2007. Ash from Thermal Power Plants as Secondary Raw Material. Arhiv za higijenu rada i toksikologiju, 58(2), 233-238.
- ]7[ Meawad, A. S., Bojinova, D. Y., Pelovski, Y. G. 2010. An overview of metals recovery from thermal power plant solid wastes. Waste management, 30(12), 2548-2559.
- ]8[ Jozi, A. S., Pouriyeh, A. A. 2011. Health-safety and environmental risk assessment of power plants using multi criteria decision making method. Chemical Industry and Chemical Engineering Quarterly, 17(4), 437-449.
- ] 9[ US. EPA. 2002, Guidance on Choosing a Sampling Design for Environmental Data Collection for Use in Developing a Quality Assurance Project plan, EPA QA/G-5S, EPA/240/R-02/005.
- ] 10[ Abdoli, M. A., Jalili Ghazizade, M., Samiefard, R. 2010. Hazardous waste management. Tehran University Publisher. ] In Persian[
- ] 11[ US. EPA. 2002. Industrial Waste Management Evaluation Model (IWEM). Users guide.
- ] 12[ Richardson, G. N., Koerner, R. M., "Geosynthetic design guidance for hazardous waste landfills cells and surface impoundments". EPA, 1989