kazhal kakaei; Ali reza Riyahi Bakhtiari; Mahdi Gholamali fard
Abstract
Background and purpose: Infiltration of leachate produced by municipal solid waste into the ground water poses a serious environmental hazard due to its high content of hydrocarbons and heavy metals. The leachate is the primary source of soil and water pollution. In this paper the risk of heavy metals ...
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Background and purpose: Infiltration of leachate produced by municipal solid waste into the ground water poses a serious environmental hazard due to its high content of hydrocarbons and heavy metals. The leachate is the primary source of soil and water pollution. In this paper the risk of heavy metals discharged from leachate in to groundwater in Hamadan landfill has been assessed using Industrial Waste Management Evaluation Model (IWEM). Methods: The concentrations of heavy metals (Cu,Pb,Ni and Cd) in leachate were determined by atomic absorption spectrophotometry and the risk of these metals discharge into groundwater was assessed by IWEM using Monte Carlo analysis. Results: Based on the obtained IWEM and EPACMTP results, geosynthetic cover was recommended for this matter. Conclusion:The most appropriate option for groundwater protection in Hamadan landfill was recommended to be geosynthetic cover (Composite linear). Owing to the high probability of leachate infiltration into groundwater, there is need to be made stricter management decisions in this regard. Also, it is necessary that IWEM is used for prevention of leachate infiltration into groundwater.
Golnar Asadi Shirin; Mehdi Gholamalifard
Abstract
Background&Objectives: In regard to the serious consequences of improper waste disposal, environmental impact assessment techniques are used to evaluate the different scenarios for waste management and minimize the negative impacts. The aim of this study was the use of Iranian Matrix ...
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Background&Objectives: In regard to the serious consequences of improper waste disposal, environmental impact assessment techniques are used to evaluate the different scenarios for waste management and minimize the negative impacts. The aim of this study was the use of Iranian Matrix and RIAM to minimize environmental impacts in Qaemshahr landfill and presenting suitable methods for efficient waste management Matrial&Methods: In this study, the existing condition of Qaemshahr landfill was compared with human’s environmental criteria for MSW landfills based on Department of the Environment (DOE) of Iran. Meanwhile, EIA of Qaemshahr solid waste landfill was carried out with two methods, RIAM and Leopold Matrix. The upgrading of existing landfill, reconstruction with compost plant and relocation of landfill were evaluated according to physiochemical, physicochemical (PC), biological-ecological (BE), sociological/cultural (SC), economical/operational (EO) economical-social and cultural components. Results: The results showed that Qaemshahr landfill lacks the environmental criteria for MSW landfills. Also, the RIAM and Iranian matrix results indicated that upgrading of existing landfill, construction of compost plant, relocation and construction of the sanitary landfill have total environmental scores as -793 and -2.26, -387 and -2.22 , -69 and -0.76 respectively. Conclusion : It is noticeable that the current process of landfill in Qaemshahr will lead to harmful health consequences. So, construction of landfill space (the third option) was chosen as the most suitable option with as little harm as possible on the environment.