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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Society of Environmental Engineers
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Journal DOI :
Korean Society of Environmental Engineering
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Volume & Issues
Volume 32, Issue 12 - Dec 2010
Volume 32, Issue 11 - Nov 2010
Volume 32, Issue 10 - Oct 2010
Volume 32, Issue 9 - Sep 2010
Volume 32, Issue 8 - Aug 2010
Volume 32, Issue 7 - Jul 2010
Volume 32, Issue 6 - Jun 2010
Volume 32, Issue 5 - May 2010
Volume 32, Issue 4 - Apr 2010
Volume 32, Issue 3 - Mar 2010
Volume 32, Issue 2 - Feb 2010
Volume 32, Issue 1 - Jan 2010
Selecting the target year
Greenhouse Gas Mitigation Policies and National Emission Targets of Korea
Kim, Ho-Seok ;
Journal of Korean Society of Environmental Engineers, volume 32, issue 9, 2010, Pages 809~817
Reducing emissions across all sectors requires a well-designed policies tailored to fit specific national circumstances. And every climate policymaker would like to have an accurate method of assessing the quantitative impacts of future policies to address GHG-related problems. Estimates of future changes in a nation's GHG emissions, the expected environmental impacts of future energy sector developments, and the potential costs and benefits of different climate technology and mitigation policy options are desirable inputs to policy making. Various mitigation analysis and modeling approaches helped to fill the needs for these kinds of information, and as such has been an important part of national mitigation policy making in many countries for most of two decades. This paper provides a overview of GHG mitigation policies and mitigation analysis, and sectoral mitigation circumstances and potentials.
Economic Analysis of Climate Change to Establish Effective Adaptation Policies
Chae, Yeo-Ra ; Youm, Yoo-Na ;
Journal of Korean Society of Environmental Engineers, volume 32, issue 9, 2010, Pages 818~829
This paper provides an extensive overview of the literature on economic analysis of climate change, and thereby provides direction for effective adaptation policies for Korea. The paper first gives a comprehensive look on the estimation of economic costs of climate change as given by various research. Following, the paper examines the choice of measures that are used in the economic analysis of climate change by different sectors, including agriculture and human health. The paper also compares and discusses the various analytic results with a focus on Korea in order to shed light on where Korea stands. Finally, the paper examines current literature on adaptation polices in response to climate change, and by examining how such research has evolved and deepened with time, provide directions for the research on adaptation policies for Korea.
Estimating BOD, CDO and TOC Hydrologic Flux in Nakdong River Basin
Lee, A-Yeon ; Park, Moo-Jong ; Jo, Deok-Jun ; Kim, Sang-Dan ;
Journal of Korean Society of Environmental Engineers, volume 32, issue 9, 2010, Pages 830~839
This study presents a constituent load estimating procedure that can be operated with the present Korean TMDL monitoring system. The modified TANK model is used as a daily river flow simulation model whose parameters are estimated from 8-day intervals flow data. Constituent loads are estimated with the 7-parameter log linear model whose parameters are estimated by the minimum variance unbiased estimator. Results from Nakdong river basin reveals that the proposed procedure provides satisfactory TOC and BOD load estimates. As an application, a representative load duration curve is derived for working out a way to represent the overall hydrologic flux of BOD, COD and TOC at Nakdong river basin. The present water quality can be checked stochastically by Load Duration Curve through this study and presented visually.
A Study on the Influence of Water Quality on the Phosphorus Fraction Properties from Reservoir Sediments
Lee, Jin-Kyung ; Ahn, Tae-Woong ; Oh, Jong-Min ;
Journal of Korean Society of Environmental Engineers, volume 32, issue 9, 2010, Pages 840~850
The present study was attempted to find the effects of structural properties of phosphorus on the water quality of Gyehwa reservoir in Saemangeum. Relationship of phosphorus fractions between water and sediment properties was closely examined, and a few types of phosphorus were found from the sample sediment as : Saloid-P, Al-P, Fe-P, Ca-P, Red-P and Occd-P. Saloid-P (1.4%), Al-P (0.5%), Fe-P (39.8%), Ca-P (56.6%), Red-P (0.4%), Occd-P (1.3%) were extracted in a mass basis from the sediment of Gyehwa reservoir. Approximately more than 97% of phosphorus were calcium related phosphorus (Ca-P, 56%) and iron bound phosphorus (Fe-P, 39.8%). The Fe-P closely relates with water quality of T-N (r=0.761, p<0.05),
-N (r=0.754, p<0.05),
-N (r=0.728, p<0.05), T-P (r=0.774, p<0.05) and
-P (r=0.767, p<0.05) while the Ca-P did not show any consistent dependency on the water quality. On the other hand, the correlation of Ca-P with
was high with r=0.783 (p<0.05) in the sediment. The Fe-P was affected significantly on the Ignition Loss (r=0.569, p<0.05), T-N (r=0.715, p<0.05) and T-P (r=0.983, p<0.01). In the research of correlation between phosphorus fraction and heavy metals in the sediment, Ca-P did not show any specific relationships with heavy metals. The Fe-P showed a significant correlation with As (r=0.817, p<0.01), Cu (r=0.793, p<0.05), Cd (r=0.786, p<0.05), Zn (r=0.738, p<0.05), so that it can be stated that the presence of Fe-P may implicate the volume of various metallic elements.
Autotrophic Nitrite Denitrification Using Sulfur Particles for Treatment of Wastewaters with Low C/N Ratios (Batch Tests)
Yoon, Seung-Joon ; Kang, Woo-Chang ; Bae, Woo-Keun ; Oh, Sang-Eun ;
Journal of Korean Society of Environmental Engineers, volume 32, issue 9, 2010, Pages 851~856
A sulfur utilizing nitrite denitrification process could be placed after the shortcut biological nitrogen removal (SBNR) process. In this study, removal of nitrite using sulfur oxidizing denitrifier was characterized in batch tests with granular elemental sulfur as an electron donor and nitrite as an electro acceptor. At sufficient alkalinity, initial nitrite nitrogen concentration of 100 mg/L was almost completely reduced in the batch reactor within a incubation time of 22 h. Sulfate production with nitrite was 4.8 g
-N, while with nitrate 13.5 g
-N. Under the conditions of low alkalinity, nitrite removal was over 95% but 15 h of a lag phase was shown. For nitrate with low alkalinity, no denitrification occurred. Sulfate production was 2.6 g
-N and alkalinity consumption was 1.2 g
. The concentration range of organics used in this experiment did not inhibit autotrophic denitrification at both low and high alkalinity. This kind of method may solve the problems of autotrophic nitrate denitrification, i.e. high sulfate production and alkalinity deficiency, to some extent.
Characteristics of VOCs Adsorption of Brick Prepared by MSWI Fly Ash
Ban, Hyo-Jin ; Jeong, Jae-A ; Lee, Woo-Keun ;
Journal of Korean Society of Environmental Engineers, volume 32, issue 9, 2010, Pages 857~861
Recently photochemical smog has become a serious urban air pollution. And VOC is the major pollutant for it. With the advance of industrialization and urbanization, MSWI fly ash and sewage sludge and melting slag were generated. It is necessary to de-toxificate ashes, because they contain many toxic constituents and probably lead to contaminate the environment. The objective of this research was to prepare multi-functional brick which is able to remove VOCs in ambient air. The bricks were made of MSWI fly ash, sewage sludge and slag. The benzene adsorption experiment by brick was acted to evaluate its adsorptivity. And also photocatalyst material was coated to enhance its adsorptivity and the endurance on the brick. According to the result, the benzene showed 74~96%. The removal efficiency was increased and the breakpoint time was lengthened by coating a brick.
Numerical Study on the Baffle Structure for Determining the Flow Characteristic in Small Scale SCR System
Park, Mi-Jung ; Chang, Hyuk-Sang ; Ha, Ji-Soo ;
Journal of Korean Society of Environmental Engineers, volume 32, issue 9, 2010, Pages 862~869
Numerical analysis was done to evaluate the gas flow distribution in small scale SCR system which has
in volume and 25,300 Sm3/hr in flue gas flow capacity. Various types of baffles proposed for controlling the flow uniformity were evaluated by the CFD analysis to find the optimal geometry of the baffle in the SCR system. By installing baffles in the SCR system, the RMS (%) value was raised up to 6.2% compared with the baffle-uninstalled state. The effect of baffle thicknesses on the RMS (%) value was not shown within 0 and 8 mm in thickness, but the RMS (%) value was raised by 2.5% in 10 mm of baffles thickness, which causes the unstability in flow. By comparison between the shape of baffles, it is known that the lattice type baffle has better performance in controlling the flow uniformity than the circular truncated cone type baffle or mixer type baffle. RMS (%) values have more that 10% difference according to the shape of baffle type.
Levels of Persistent Organic Pollutants in Waste Paper and Waste Lumber and Evaluation of their Sources
Hwang, In-Kyu ; Lee, In-Seok ; Oh, Kwang-Joong ; Kim, Ji-Won ; Park, Hung-Suck ; Oh, Jeong-Eun ;
Journal of Korean Society of Environmental Engineers, volume 32, issue 9, 2010, Pages 870~878
We investigated the concentration and the sources of ubiquitous persistent organic pollutants [i.e., 17 toxic polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), 12 coplanar polychlorinated biphenyls (Co-PCBs), and 16 priority polycyclic aromatic hydrocarbons (PAHs)] in waste papers and lumbers from industrial complexes. The total concentrations in waste papers and lumbers ranged from 9.69~176.77 pg/g-dry and 0.14~0.25 pg/g-dry for 17 PCDD/Fs, 109.95~4097.25 pg/g-dry and 28.23~59.88 pg/g-dry for 12 Co-PCBs and 9.30~52.18 ng/g-dry and 0.82~1.82 ng/g-dry for 16 PAHs respectively. Generally, the concentration of these pollutants in waste papers was higher than those in waste lumbers. OCDD was dominant in waste papers and lumbers and the PCDD/F patterns of these samples were similar with that of stack gas. The distribution patterns of Co-PCBs in wastes were related with commercial PCB products, indicating the effect of commercial PCB products on ubiquitous environment. The diagnostic ratios of several PAH compounds in waste paper showed that they were related with pyrogenic sources.
Removal Characteristics of Nitrogen and Phosphorus by Struvite Crystallization using Converter Slag as a Seed Crystal
Yim, Soo-Bin ;
Journal of Korean Society of Environmental Engineers, volume 32, issue 9, 2010, Pages 879~886
This study investigated the removal characteristics of highly concentrated
-P by struvite crystallization using converter slag as a seed crystal. The optimal pH range for removal and recovery of
-P by struvite crystallization was measured to be 8.0~8.75, in which total removal efficiencies for
-P by struvite precipitation and crystallization were 34.3~61.0% and 91.0~96.2%, respectively. The maximum removal efficiencies for
-P by struvite crystallization were 29.4% at pH 8.5 and 65.1% at pH 8.0, respectively. The removal efficiency of
-N by struvite crystallization decreased with increasing calcium ion concentration. The analysis results of SEM, EDS and XRD exhibited that
-P in meta-stable region of struvite crystallization could be eliminated through formation of magnesium ammonia phosphate (MAP) and hydroxyapatite (HAp) on seed crystals by struvite precipitation and crystallization.
Design of the Perforated Pipe in Water Treatment Process using CFD
Cho, Young-Man ; Yoo, Soo-Jeon ; Roh, Jae-Soon ; Bin, Jae-Hoon ;
Journal of Korean Society of Environmental Engineers, volume 32, issue 9, 2010, Pages 887~893
Role of the perforated pipe is to drain the water with equal pressure and velocity through the holes of perforated pipe. The perforated pipe is being used in many processes of water treatment system, however, the design parameter of perforated pipe is not standardized in korea. In this study, we have found the design parameter of perforated pipe in the water treatment system using the Computational Fluid Dynamics (CFD). The uniformity of outflow from the perforated pipe is directly affected according to area ratio (gross area of holes/surface area of the perforated pipe). In other words, the uniformity of outflow is improved as area ratio is smaller. Also, at the same area ratio, the uniformity of outflow is improved as number of holes is increase. Specially, in case of the two holes per length of pipe diameter (2/D) shows the most uniformity of outflow and the best hydraulic with the smaller pressure drop. When the inlet velocity of pipe is about 0.06m/sec, the flux of pipe has decreased as from front to backward. When the inlet velocity is 3 m/s, the flux of pipe has increased as from front to backward.
A Study on the Sludge Reduction and Biogas Production through a Two-phase Anaerobic Digestion Process
Woo, Mi-Hee ; Han, Gee-Bong ;
Journal of Korean Society of Environmental Engineers, volume 32, issue 9, 2010, Pages 894~899
We coordinated the experiments with ozone pretreatment and two-phase anaerobic digestion using solid-liquid separation to raise the efficiency of sludge volume reduction and obtained the following results. The pre-treatment with ozone reduced the solid concentration in the average of TSS
VSS. Of the organic material, TCOD decreased
, but SCOD showed
increased, which was due to destruction of the cell wall and dissolution of icell media by the powerful oxidative stress of ozone. During the two-phase anaerobic digestion process, we achieved the reduction of
SCOD in average. The maximum methane gas production were 177.6 mL per g TSS, 210.8 mL per g VSS, 127.0 mL per g TCOD and 1452.0 mL per g SCOD, respectively. Solid material reduction through the two-phase anaerobic digestion and MLE (Modified Ludzack-Ettinger) processes were 93.8% of TSS and 92.0% of VSS. We concluded that suggested two-phase anaerobic digestion and MLE process could achieve the reasonable production of biogas and a maximum reduction of the sludge volume.
Harmful Chemicals Migrating from Plastic Hoses Using Household into Tap Water
Bae, Seok-Mun ; Son, Hee-Jong ; Jeong, Hyun-Chul ; Choi, Jin-Taek ; Bin, Jae-Hoon ;
Journal of Korean Society of Environmental Engineers, volume 32, issue 9, 2010, Pages 900~904
Polyvinyl chloride (PVC) hoses, polyethylene hose and silicone hose for tap water were tested with respect to migration of phenolic compounds to water. The highest concentrations (0.36~1.97 mg/L) of total phenolic compounds were observed in the test water from PVC hoses. Increasing residual Cl concentration from 0 to 0.5 mg/L or increasing water temperature from 4 to
increased 3~3.2 times and 100~104 times for migrated total phenolic compounds concentrations, in respectively. A major migrating phenolic compounds from PVC hoses were bisphenol-a (BPA) and it was observed that the concentration of migrating phenolic compounds in the order: DEHP > 2-chlorophenol > 2,4,6-trichlorophenol > 2,4-dichlorophenol from PVC hoses.