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RISS 인기검색어
- 검색키워드
- 저자 : Hwang Kum-Lok (검색결과 3 건)
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Emission of greenhouse gases from waste incineration in Korea
Hwang, Kum-Lok,Choi, Sang-Min,Kim, Moon-Kyung,Heo, Jong-Bae,Zoh, Kyung-Duk Elsevier 2017 Journal of environmental management Vol.196 No.-
<P>Greenhouse gas (GHG) emission factors previously reported from various waste incineration plants have shown significant variations according to country-specific, plant-specific, and operational conditions. The purpose of this study is to estimate GHG emissions and emission factors at nine incineration facilities in Korea by Measuring the GHG concentrations in the flue gas samples. The selected incineration plants had different operation systems (i.e., stoker, fluidized bed, moving grate, rotary kiln, and kiln & stoker), and different nitrogen oxide (NOx) removal systems (i.e., selective catalytic reduction (SCR) and selective non catalytic reduction (SNCR)) to treat municipal solid waste (MSW), commercial solid waste (CSW), and specified waste (SW). The total mean emission factors for A and B facilities for MSW incineration were found to be 134 +/- 17 kg CO2 ton(-1), 88 +/- 36 g CH4 ton(-1), and 69 +/- 16 g N2O ton(-1), while those for CSW incineration were 22.56 g CH4 ton(-1) and 259.76 g N2O ton(-1), and for SW incineration emission factors were 2959 kg CO2 ton(-1), 43.44 g CH4 tons and 401.21 g N2O ton(-1), respectively. Total emissions calculated using annual incineration for MSW were 3587 ton CO2-eq yr(-1) for A facility and 11,082 ton CO2-eq yr(-1) for B facility, while those of IPCC default values were 13,167 ton CO2-eq yr(-1) for A facility and 32,916 ton CO2-eq yr(-1), indicating that the emissions of IPCC default values were estimated higher than those of the plant-specific emission factors. The emission of CSW for C facility was 1403 ton CO2-eq yr(-1), while those of SW for D to I facilities was 28,830 ton CO2-eq yr(-1). The sensitivity analysis using a Monte Carlo simulation for GHG emission factors in MSW showed that the GHG concentrations have a greater impact than the incineration amount and flow rate of flue gas. For MSW incineration plants using the same stoker type in operation, the estimated emissions and emission factors of CH4 showed the opposite trend with those of NO2 when the NOx removal system was used, whereas there was no difference in CO2 emissions. (C) 2017 Elsevier Ltd. All rights reserved.</P>
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Characteristics of methane and nitrous oxide emissions from the wastewater treatment plant
Hwang, Kum-Lok,Bang, Cheon-Hee,Zoh, Kyung-Duk Elsevier 2016 Bioresource technology Vol.214 No.-
<P><B>Abstract</B></P> <P>The nitrous oxide (N<SUB>2</SUB>O) and methane (CH<SUB>4</SUB>) emissions were measured from a municipal wastewater treatment plant (WWTP) using a flux chamber to determine the emission factors. The WWTP treats sewage using both the activated-sludge treatment and anaerobic/anoxic/aerobic (A<SUP>2</SUP>O) methods. Measurements were performed in the first settling, aeration, and secondary settling basins, as well as in the sludge thickener, sludge digestion tank, and A<SUP>2</SUP>O basins. The total emission factors of N<SUB>2</SUB>O and CH<SUB>4</SUB> from the activated-sludge treatment were 1.256gN<SUB>2</SUB>O/kg total nitrogen (TN) and 3.734gCH<SUB>4</SUB>/kg biochemical oxygen demand (BOD<SUB>5</SUB>), respectively. Those of the advanced treatment (A<SUP>2</SUP>O) were 1.605gN<SUB>2</SUB>O/kg TN and 4.022gCH<SUB>4</SUB>/kgBOD<SUB>5</SUB>, respectively. These values are applicable as basic data to estimate greenhouse gas emissions.</P> <P><B>Highlights</B></P> <P> <UL> <LI> CH<SUB>4</SUB> and N<SUB>2</SUB>O emissions were measured from a WWTP. </LI> <LI> CH<SUB>4</SUB> emission factors were generally higher than those of N<SUB>2</SUB>O. </LI> <LI> CH<SUB>4</SUB> emission factor (activated-sludge processes) was 3.734gCH<SUB>4</SUB>/kgBOD<SUB>5</SUB>. </LI> <LI> CH<SUB>4</SUB> emission factor (A<SUP>2</SUP>O processes) was 4.022gCH<SUB>4</SUB>/kgBOD<SUB>5</SUB>. </LI> <LI> CH<SUB>4</SUB> emission factor (sludge digestion tank) was 227.0gCH<SUB>4</SUB>/kgBOD<SUB>5</SUB>. </LI> </UL> </P>
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탐진강의 총량규제를 위한 오염원별 수계${cdot}$행정구역 허용부하량과 삭감부하량 할당에 관한 연구
황금록,황대호,백도현,이홍근,Hwang Kum-Lok,Hwang Dae-Ho,Paik Do-Hyeon,Lee Hong-Keun 한국환경보건학회 2004 한국환경보건학회지 Vol.30 No.5
This study is to calculate Allocation of Pollution Discharges by administrative region for the TMDL (Total Maximum Daily Load) on Tamjin River. TMDL has the water quality target and value ($BOD_5$, 1 ppm) and is calculated by the QUAL2E model. The expected TMDL for Tamjin River is 1,532,360 kg/day. The calculation showed that the main pollutants are due to the non-point sources in Tamjin River and the aqua-farms are another important sources near the bay. And sources from population and livestock should be reduced, especially aqua-farm source should be managed and eliminated first which is over 14,000 ton/day.
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