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An Environmental Impact Assessment Model with Monetary Valuation for Remediation in South Korea
어세연,박재우 대한토목학회 2019 KSCE Journal of Civil Engineering Vol.23 No.10
An environmental impact assessment model for soil remediation was developed to evaluate the environmental impacts of the remedial activities in both qualitative and quantitative way. It is a Microsoft Excel-based program containing seven soil remediation alternatives for South Korea. Qualitative evaluation provides a set of a checklist, and users can evaluate the environmental impacts by filling in the checklists. Four in-situ and three ex-situ remedial schemes are available in the quantitative evaluation. In quantitative evaluation, the quantities of energy, CO2, SOX, and NOX generated from the remediation technology are the results. The results are then converted into a single index, monetary value. Monetary value allows users to compare different remediation technologies by a single index. A case study is demonstrated to show applicability of this integrated environmental impact assessment program which is optimized for South Korea
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기체상 질소산화물을 포함한 2012~2014년도 대한민국 질소수지 연구
이한욱,어세연,박재우,Lee, Hanuk,Oa, Seyeon,Park, Jae-Woo 한국지하수토양환경학회 2017 지하수토양환경 Vol.22 No.4
This study estimated the nitrogen budget, including gaseous nitrogen oxides ($NO_x$), of South Korea in 2012~2014. The nitrogen budget was classified into three categories: agricultural and livestock, forest, and city. To estimate the nitrogen budget, several input and output parameters were investigated, including deposition, fixation, irrigation, chemical fertilizer use, compost, fuel, denitrification, volatilization, runoff, crop uptake, leaching, and $NO_x$ emissions. The annual nitrogen inputs from 2012 to 2014 were 6,202,828, 6,137,708, and 6,022,379 ton/yr, respectively. The corresponding annual nitrogen outputs were 1,393,763, 1,380,406, and 1,360,819 ton/yr, respectively, signifying a slight decrease from 2012 to 2014. $NO_x$ was the parameter contributing to the nitrogen budget to the greatest extent. The annual ratios of $NO_x$ emissions by vehicles, power plants, and businesses were 0.31, 0.31, and 0.30 in 2012, 2013, and 2014, respectively. A change in government policy that prohibited the disposal of livestock manure and sewage sludge in the ocean from 2012 affected nitrogen budget profile. As a result, the ocean disposal ratio completely diminished, which differs from previous studies.
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