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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 34, Issue 12 - Dec 2012
Volume 34, Issue 11 - Nov 2012
Volume 34, Issue 10 - Oct 2012
Volume 34, Issue 9 - Sep 2012
Volume 34, Issue 8 - Aug 2012
Volume 34, Issue 7 - Jul 2012
Volume 34, Issue 6 - Jun 2012
Volume 34, Issue 5 - May 2012
Volume 34, Issue 4 - Apr 2012
Volume 34, Issue 3 - Mar 2012
Volume 34, Issue 2 - Feb 2012
Volume 34, Issue 1 - Jan 2012
Selecting the target year
Removal Characteristics of Synthetic Musk Compounds in Water by Ozone Treatment
Seo, Chang-Dong ; Son, Hee-Jong ; Yoom, Hoon-Sik ; Lee, Sang-Won ; Ryu, Dong-Chun ;
Journal of Korean Society of Environmental Engineers, volume 34, issue 2, 2012, Pages 73~78
DOI : 10.4491/KSEE.2012.34.2.073
In this study, three different synthetic musk compounds (SMCs) in the Nakdong river water (raw water) and rapid sand filtered water were treated by
process. The experimental results showed that the removal efficiency of musk ketone (MK) was lower than removal efficiency of AHTN (7-acetyl-1,1,3,4,4,6-hexamethyl-1,2,3,4-tetrahydronaphthalene) and HHCB (1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta[c]-2-benzopyran) for both the raw water and the rapid sand filtered water. And in general, the removal efficiencies of three SMCs in the raw water were lower than that in the sand filtered water. Under the
dose of 0.5~10.0 mg/L, the removal rate constants (k) of three SMCs for the raw and sand filtered waters increased rapidly with the increased
dose. In the case of drinking water treatment plants (DWTPs) which were selected pre- and post-
processes (located in the downstream of Nakdong River), operation conditions of pre- and post-
(2~4 min) and
(6~8 min). Therefore,
doses and contact times of same conditions with above were very difficult to remove SMCs in DWTPs.
A Study on Application of SBR Process for RO Retentate Treatment
Kim, Il-Whee ; Joo, Hyun-Jong ;
Journal of Korean Society of Environmental Engineers, volume 34, issue 2, 2012, Pages 79~85
DOI : 10.4491/KSEE.2012.34.2.079
In this study, Application of sequencing batch reactor (SBR) process for RO retentate treatment was performed. Efficiency of treatment by load and temperature variation was tested. The SBR process was operated two types as HRT per one cycle was 8 and 12 hours, respectively. Methanol was injected for an effective denitrificaion owing to low C/N ratio of the RO retentate. TN removal efficiency of the SBR process was relatively stable at the change of flow-rate and temperature. The optimum time cycle of SBR process was 2 cycle/day for TN removal, and in the case of 3 cycle/day, the effluent TN concentration was found under the effluent quality standard. In the result of assessment, the application of SBR process for RO retentate treatment was effective and could be utilized to design for the wastewater treatment plant. The specific nitrification rate (SNR) and specific denitrification rate (SDNR) were
, respectively. The derived kinetic could be applied for design to the aerobic and anoxic tank in the RO retentate treatment.
Emissions with Different Land-Use Patterns in a Basin
Seo, Ju-Young ; Kang, Ho-Jeong ;
Journal of Korean Society of Environmental Engineers, volume 34, issue 2, 2012, Pages 86~90
DOI : 10.4491/KSEE.2012.34.2.086
The gaseous product of nitrogen cycle, nitrous oxide (
) is a potent greenhouse gas whose Global Warming Potential (GWP) is about 300 times greater than
. The dynamics of
emission are controlled by such environments and soil conditions. The main aim of this study is to investigate variations of
emission and its controlling factors with different land-use patterns in Haean basin. A forest, a radish field and a rice paddy were selected as three different land-use patterns. Their
emissions were measured every month during a growing season. We also collected soil samples with seasons and analyzed soil characteristics including inorganic nitrogen content.
emission was greatest at the radish field likely due to anthropogenic nitrogen addition by fertilization. Soils of forest and rice paddy also contained inorganic nitrogen originated from organic matter. However, the spatial variation was great and it looks that nitrogen cycle and
production were slower than that of radish field. Intensive observation and control of fertilization would be requiredto adjust
emission from agriculture soils.
Effects of Operation Parameters on Pollutants Removal in a Lab-Scale Multi-Layered Soil Filtration System
Won, Se-Yeon ; Ki, Dong-Won ; Yoon, Min-Hyeok ; Maeng, Sung-Kyu ; Ahn, Kyu-Hong ; Park, Joon-Hong ; Song, Kyung-Guen ;
Journal of Korean Society of Environmental Engineers, volume 34, issue 2, 2012, Pages 91~96
DOI : 10.4491/KSEE.2012.34.2.091
In this study we investigated the effects of operational parameters of a multi-layered soil filtration (filter depth, filtration velocity, and continuous/intermittent operation) on removal of pollutants in river water. As filter depth increased removal of all the pollutants (COD, TP, TN, and
-N) was increased because the increase in filter depth increased in contact time between media and pollutants. The removal of TP and
-N more increased with the increase in filter depth, comparing to the biological COD removal which was performed only in the top layer, since the removal mechanism of TP and
-N was physicochemical process occurring throughout the whole layers. However, the reduction in filtration velocity resulted in decrease of removal all the pollutants removal due to shorter retention time. Biological COD removal was more influenced with the reduction in filtration velocity (longer retention time), than the removal of TP and
-N. Because biological process was occurred only in the top layer which has relatively shorter retention time, comparing with physicochemical process occurred throughout whole media. Therefore, it is desirable that the operation parameters be controlled toward increasing retention time, in order to achieve efficient pollutants removal. The change in operation mode (continuos vs. intermittent operations) did not provide significant effects on the pollutant treatment efficiency by the multi-layered soil filtration system. Our findings suggest that for stable long-term operation it should be considered keeping conditions for biological activity and accelerating clogging.
The Estimation of Food Sources for Macroinvertebrates as Stenopsyche marmorata in Natory Stream by Fatty Acid
Shin, Woo-Seok ; Kim, Boo-Gil ; Lee, Yong-Doo ;
Journal of Korean Society of Environmental Engineers, volume 34, issue 2, 2012, Pages 97~102
DOI : 10.4491/KSEE.2012.34.2.097
The purpose of this study is to clarify the origin and the variation of essential fatty acid (FA) and food sources of Stenopsyche marmorata at downstream region of Dam. As a result, the water particulate organic matter (POM) is mainly derived from diatom, green algae and bacteria. Moreover, the main food sources of S. marmorata mainly used diatom, green algae and bacteria.
essential FA of S. marmorata was higher than
, and showed about 7 for essential FA ratio.
A Study on the Flow Entrainment Characteristics of a Coaxial Nozzle Used in a MILD Combustor with the Change of Nozzle Position and Flow Condition
Shim, Sung-Hoon ; Ha, Ji-Soo ;
Journal of Korean Society of Environmental Engineers, volume 34, issue 2, 2012, Pages 103~108
DOI : 10.4491/KSEE.2012.34.2.103
A MILD (Moderate and Intense Low oxygen Dilution) combustor decreases NOx formation effectively during the combustion process and NOx formation is affected significantly by the exhaust gas entrainment rate toward fuel and air. The present study focused on the new MILD combustor, which has coaxial cylindrical tube. The outside tube of the new MILD combustor corresponds to the exhaust gas passage and the inner side tube is the furnace passage. The connection pipe is set between the outer side and the inner side tubes and coaxial air nozzle is inserted at the center of the connection pipe. A numerical analysis is accomplished to elucidate the characteristics of exhaust gas entrainment toward the inner furnace with the changes of air nozzle exit velocity, nozzle diameter, nozzle exit position and exhaust gas side pressure. The entrainment rate is proportional to the square root of air nozzle exit velocity and negatively proportional to the pressure difference between the exhaust gas side and furnace side pressures. The effect of air nozzle exit position is not considerable on the exhaust gas entrainment.
Human Risk Assessment of Polybrominated Diphenyl Ethers by Breast Milk Feeding of Infants
We, Sung-Ug ; Cho, Bong-Hui ; Cho, Yu-Jin ; Yoon, Cho-Hee ; Choi, Shi-Nai ; Min, Byung-Yun ;
Journal of Korean Society of Environmental Engineers, volume 34, issue 2, 2012, Pages 109~118
DOI : 10.4491/KSEE.2012.34.2.109
This study achieves results from 22 maternity breast milk samples in total to demonstrate exposure level and risk assessment of PBDEs in Seoul area. PBDEs were detected in all the breast milk samples of the present study, indicating that general population in these Seoul area are widely exposed to these chemicals. Residue levels of total PBDEs (sum PBDEs from tri- to hepta-BDE) ranged of 0.84~13.1 ng/g lipid with an arithmetic mean and median of 3.56 ng/g lipid and 2.6 ng/g lipid, respectively. Global comparison shows that the levels of total PBDEs were relatively similar to those of China, Taiwan and European country (Sweden), and somewhat higher than those in some Asian (Vietnam, Philippines, and Indonesia). In the present study, however, the levels of total PBDEs in human milk are still one to two orders of magnitude lower than those in North America. Contribution rate of each congener appeared to be predominant with BDE-47, followed by BDE-153, BDE-100, BDE-99, BDE-154 and BDE-183. The sum of BDE-47 and BDE-153 accounted for more than 65% of total PBDEs in most samples. From the result of the human risk assessment of infants for total PBDEs and BDE-47 by breast milk feeding, we could find out that the average daily doses and hazard index (95th percentile) were 16.5 ng/kg bw/day and
each other when nursing for 6 months after infants born. However, it was concluded that the infant health hardly had adverse seriously effects under this research condition.
Use of Tributary Water Quality and Flowrate Monitoring Data for Effective Implementation of TMDL
Kim, Young-Il ; Jeong, Woo-Hyeok ; Kim, Hong-Su ; Yi, Sang-Jin ;
Journal of Korean Society of Environmental Engineers, volume 34, issue 2, 2012, Pages 119~125
DOI : 10.4491/KSEE.2012.34.2.119
The tributary water quality and flowrate monitoring result, which is fundamental data for the establishment of the water environmental policy, is used as very important data for the implementation of TMDL. This study introduced how to use the tributary water quality and flowrate monitoring data for the analysis of the watersheds, the satisfactory assessment of water quality standards in the watersheds, the selection of watersheds for the establishment of the implementation plan, and the selection of the tributary catchments for improving the water quality using a stream grouping method. According to the analytical results of tributary catchment using water quality and flowrate monitoring data of thirty-seven tributaries in the Geum-River watershed at Chungcheongnam-do, the value of flowrate in the tributaries, which is located in the middle-lower Geum-River watershed, was greater than the other areas and the concentration of the water pollutants regardless of water quality parameters in the tributaries at Nonsancheon catchment was relatively higher than the other areas. The problems, which have the determination of satisfaction of water quality standards and selection of target watersheds for establishment of the implementation plan regardless of the water quality of tributary in the watershed due to the water quality and flowrate monitoring results of the main river, were improved use of the results of tributary water quality and flowrate monitoring. Also, the tributary catchments for improving the water quality, according to stream grouping method based on the results of tributary water quality and flowrate monitoring, were selected. In the Geum-River watershed at Chungcheongnam-do, the tributary in the Nonsancheon, Byeongcheoncheon, Seokseongcheon, Jocheon catchments, which has a large flow and a high concentration of water pollutants, should be preferentially selected for improving the water quality of the tributary in accordance with the reduction of the source of pollution.
Study on the Chinese Declarations to the London Protocol at the Time of Its Accession
Choi, Ji-Young ; Hong, Gi-Hoon ; Shin, Chang-Hoon ;
Journal of Korean Society of Environmental Engineers, volume 34, issue 2, 2012, Pages 126~135
DOI : 10.4491/KSEE.2012.34.2.126
Republic of Korea designates a waste disposal site within the fishing zone administered jointly with Chin in the Yellow Sea. The issue of waste disposal at sea is subject to the 1996 Protocol to the Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter commonly called London Protocol. China, one of the contracting parties declared that if China becomes a party to a dispute concerning the interpretation and application of the Protocol, the Arbitral procedure of the Protocol shall only be applied with written consent of the Government of China according to the Article 16.5 of the Protocol at the time of its accession. The Article allows any State may declare that, when it is a party to dispute about the interpretation or application of precautionary approach or polluter pay principle, its consent will be required before the dispute may be settled by means of the Arbitral procedure of the Protocol. This paper analyzes the legal basis of Chinese declaration and its implication to parties that may be in dispute with China using international precedents of similar nature and a game theory.
Application of the Recombinant Bioluminescence Bacterium on the Toxicity Assessment of the Sole Chemicals and Soil Samples
Kong, In-Chul ; Kim, Jin-Yeong ; Lee, Sun-Hee ; Ko, Kyung-Seok ;
Journal of Korean Society of Environmental Engineers, volume 34, issue 2, 2012, Pages 136~142
DOI : 10.4491/KSEE.2012.34.2.136
Various factors affecting on the bioassay were investigated. Experiments with a low mixture ratio (cell to toxicant solution) of 0.5 : 9.5 (v/v) produced observable bioluminescence intensity for assay. Both sodium lactate and potassium nitrate stimulate bioluminescence activity; 2.6~4.0 times of control. Distilled water and MSM, which gave non significant effects on the bioluminescence activity, were determined as proper diluent or extract solutions. A wide range of toxic responses of metals and organics were observed. In general, organics were much less sensitive than metals. Samples collected from eleven sites showed the bioluminescence activity ranging from 29 to 111% of the control. Significant correlation between toxicity and total metal contents was not observed, but the toxicity of two groups, sorted based on the contaminated arsenic concentration in soils, was 44% and 20%, showing considerable differences.