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Emergy 분석을 이용한 낙동강유역의 오염총량관리계획에 대한 환경회계
김진이 ( Jin Lee Kim ),이수웅 ( Su Woong Lee ),김용석 ( Yong Seok Kim ),이석모 ( Suk Mo Lee ) 한국물환경학회 2011 한국물환경학회지 Vol.27 No.3
This study, which evaluated the contribution of the real economic value and system in the Nakdong River Basin, estimated the emergy analysis for environmental accounting of the TMDL program. And an environmental accounting for TMDL is evaluated before and after adopting TMDL program respectively. The value of emergy after adopting the TMDL was 7.90 E+20 sej/yr. Although the real yield of the river after governmental investment was high (before: 9.7118 E+20 sej/yr and after: 9.7224 E+20 sej/yr), the effects of improvement was not great, in terms of an investment cost. The benefit/cost ratio resulted from environmental accounting has decreased from 1.493 to 1.230 due to the cost of managing treatment facilities. The method of improving water quality in the Nakdong River Basin by the TMDL program should be changed into an ecological treatment facilities using resources efficiently from a control of water quality depending on expansion of the wastewater treatment facilities and advanced treatment plant using high cost and non-renewable energies.
MEXICO 전산모형을 이용한 우리나라 장기 전력계통 공급신뢰도 전망
김진이(Jin-Yi Kim),유헌수(Heon-Su Ryu),김태훈(Tae-Hoon Kim),이조련(Jo-Lyeon Lee),박만근(Marn-Geun Park),조강욱(Kang-Wook Cho) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.11
본 논문은 제3차 전력수급기본계획을 토대로 2010년부터 2020년도까지 우리나라 장기전력계통의 공급신뢰도를 MEXICO 모형을 이용해 전망한 결과를 분석한 것이다. 지금까지 전력계통 신뢰도에 대한 연구들은 주로 발전계통을 대상으로 한 결정론적 신뢰도 산정을 다루었던 반면 MEXICO 모형을 이용한 분석은 발전설비와 송전선로의 불확실성까지 고려한 복합 전력계통을 대상으로 실질적인 신뢰도 평가를 수행하였다는 점에서 의미가 있다. 주요 검토 내용으로는 2010년, 2012년, 2014년, 2020년도에 대한 공급지장에너지 및 공급지장비용분석 등을 다루고 있으며 이번 논문에서 사용된 신뢰도 평가방법은 향후 전력설비(발전 및 송전 설비계획의 복합 부분)의 확충계획 수립에 활용이 가능할 것이다.
Emergy를 이용한 오염물질 저감시설의 환경 비용/편익 분석
김진이 ( Jin Lee Kim ),황하선 ( Ha Sun Hwang ),김상수 ( Sang Soo Kim ),이재관 ( Jae Kwan Lee ) 한국물환경학회 2013 한국물환경학회지 Vol.29 No.5
The input emergy of an advanced treatment plant for reducing the 1 kg of TN and TP was estimated 4.14E+14 sej/kg, 5.02E+15 sej/kg, respectively. In addition, the input emergy of constructed wetland for reduction of the 1 kg of TN and TP reduction was estimated to be 2.48E+14 sej/kg, 3.38E+15 sej/kg, respectively. The cost reducing 1 kg of TN and TP for an advanced treatment plant was estimated 197,466 won and 2,388,739 won respectively and constructed wetland was estimated 117,976 won and 1,609,213 won respectively. As a result, All of the emergy source of constructed wetland for reducing non-point source is renewable resource. If we use the constructed wetland, it results in enhancing economic value by reducing of non-point pollution, controlling a flood and providing the habitat of animals or plants. Improving water quality program in the Nakdong River Basin should be changed into an ecological treatment facilities from expansion of the sewage treatment facilities and advanced treatment plant using high cost and non-renewable energies.