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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Society of Environmental Engineers
Journal Basic Information
Journal DOI :
Korean Society of Environmental Engineering
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Volume & Issues
Volume 31, Issue 12 - Dec 2009
Volume 31, Issue 11 - Nov 2009
Volume 31, Issue 10 - Oct 2009
Volume 31, Issue 9 - Sep 2009
Volume 31, Issue 8 - Aug 2009
Volume 31, Issue 7 - Jul 2009
Volume 31, Issue 6 - Jun 2009
Volume 31, Issue 5 - May 2009
Volume 31, Issue 4 - Apr 2009
Volume 31, Issue 3 - Mar 2009
Volume 31, Issue 2 - Feb 2009
Volume 31, Issue 1 - Jan 2009
Selecting the target year
Improvement of Water Treatment Facilities Operation and Maintenance Based on Low Carbon Green Growth Strategy
Ahn, Hyo-Won ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1051~1070
Size-dependent Toxicity of Metal Oxide Particles on the Soil Microbial Community and Growth of Zea Mays
Kim, Sung-Hyun ; Jung, Mi-Ae ; Lee, In-Sook ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1069~1074
This study investigated soil microbial community and growth of Zea mays to compare the toxicity of nano and micro-sized Cu and Zn oxide particles in microcosm system. In the presence of nanoparticles, biomass of Zea mays reduced by 30% compared with micro-sized particles and inhibited growth. Dehydrogenase activity was inhibited by CuO nano although it was increased by ZnO nano particles. According to the Biolog test, the microbial diversity was decreased after exposed to CuO nanoparticles and ZnO microparticles. Therefore, though it is widely recognized that nanoparticles are more harmful than microparticles, we can conclude that the diversity of microbial community does not always influenced by the size of particles of nano and micro.
Acidogenesis of Lipids-Containing Wastewater in Anaerobic Sequencing Batch Reactor
Kim, Sang-Hyoun ; Shin, Hang-Sik ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1075~1080
The partial lipid degradation with the saturation of double-bond at the acidogenesis stage is known to help subsequent methanogenesis during anaerobic digestion. Acidogenic reactions in an anaerobic sequencing batch reactor (ASBR) and a continuously stirred tank reactor (CSTR) were carried out to compare their performances. A mixture of two unsaturated (oleate and linoleate) and two saturated (palmitate and stearate) long-chain fatty acids (LCFAs) was used as a model substrate. Biomass retention in the ASBR contributed to the enhanced performance at hydraulic retention time (HRT) below 15 hr. Biomass retention in the ASBR contributed to the enhanced performance compared to CSTR even at shorter HRT. ASBR would be a proper reactor configuration for the acidogenesis of lipid-containing wastewater.
Removal of Rhodamine B using Electrocoagulation Process
Kim, Dong-Seog ; Park, Young-Seek ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1081~1088
The performance of a electrocoagulation (EC) process was examined for the removal of Rhodamine B (RhB) using iron electrode. The effects of operational parameters such as electrode material (aluminum and iron), current density, NaCl dosage, intial pH and initial dye concentration on RhB removal efficiency were investigated. The optimum range for each of these operating variables were experimentally determined. The experimental results showed that the iron is superior to aluminum as sacrificial electrode material. The optimum time of electrolysis, current density, NaCl dosage and pH were 10 min, 1630 A/
, 4 g/L and neutral pH, respectively. Under these conditions, RhB was effectively removed (> 93.4%) and also more than 80% of COD was removed (> 88.9%) when the initial concentration of RhB was 230 mg/L. The electrical energy consumption in the above conditions for the color and COD of RhB removal were 10.3 and 10.8 kWh/kg RhB, respectively. The electrocoagulation process could be a promising technology to treat dye wastewater containing RhB.
A study on Watershed Model for Predicting the Runoff Characteristics of Urban Area
Lee, Hye-Won ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1089~1094
The SWMM (Storm Water Management Model) was applied to Princeton University campus, USA to predict the change of the runoff characteristics. Topography and infra structure of urban area are used in detail and watershed is made as form of regular square to improve the efficiency of data. Princeton campus was divided into 131 sub-basins and model input parameters were obtained from DEM (Digital Elevation Model), land use type, and campus management map, etc.. The model was validated based on the measured meteorological data. The validated model was used to analyze the change of the runoff characteristics according to urbanization, which are two different scenarios: 50% and 100% increase of impervious area. The increase of impervious area causes the increase of runoff, especially in the first-flush.
Evaluation of the Feasibility of Oyster-Shell and Eggshell Wastes for Stabilization of Arsenic-Contaminated Soil
Lim, Jung-Eun ; Moon, Deok-Hyun ; Kim, Dong-Jin ; Kwon, Oh-Kyung ; Yang, Jae-E. ; Ok, Yong-Sik ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1095~1104
The objective of this research was to evaluate the feasibility of using oyster-shell and eggshell wastes for the stabilization of arsenic-contaminated soil. Artificial As(V) contaminated soil was mixed with 0~5% oyster-shell and eggshell wastes and each sample was incubated for 30 days in a controlled environment. The efficiency of each treatment was evaluated using various single extractants (1 N HCl, 0.1 N NaOH and 0.5 N
). The concentration of As(V) was reduced by 10% upon a 5% oyster-shell or eggshell waste treatments based on the Korea Standard Test method (1 N HCl extraction). Analogous trends were observed in the 0.1 N NaOH or 0.5 N
extractions. In addition, the oyster-shell and eggshell waste treatments increased the pH of each soil from 6.54 (Control) to 7.62~7.94. The exchangeable Ca in each soil also sharply increased from 6.87 cmol(+)/kg (Control) to 12.77~20.18 cmol(+)/kg. Further research is needed to increase the effectiveness of the oyster-shell and eggshell waste for the stabilization of As(V) in the contaminated soil.
Transport of Selected Veterinary Antibiotics (Tetracyclines and Sulfonamides) in a Sandy Loam Soil: Laboratory-Scale Soil Column Experiments
Lee, Hyeon-Yong ; Lim, Jung-Eun ; Kim, Sung-Chul ; Kim, Kwon-Rae ; Kwon, Oh-Kyung ; Yang, Jae-E. ; Ok, Yong-Sik ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1105~1112
Antibiotics are biologically active substances and commonly used for therapeutic treatment of infectious disease in humans and for treating and protecting the health of animals. In recent years, antibiotics have attracted worldwide attention because of their side effects on the environment. Consequently, efforts have been made to monitor the residual of antibiotics in the environment. This study tested the mobility of tetracyclines and sulfonamides in soil and leachate through column experiments. The three tetracycline antibiotics showed higher mass recovery rates in all kinds of soils(28.00~44.11%) than in leachate(10.54~27.43%). This seems attributable to the high adsorption coefficient values(
) of tetracyclines representing strong and active adsorbability to organic and mineral phases in soil, ending up relatively small amount being detected in surface water. By contrast, the sulfonamides(sulfamethazine and sulfathiazole) showed higher mass recovery rates in leachate(23.19~26.20%) compared to in soil(10.41~14.21%) due to lower adsorption coefficient values and higher mobility of sulfonamides, enabling easier movement to surface water through the runoff in the environment.
Study on Sludge Reduction by Sludge Solubilization and Change of Operation Conditions of Sewage Treatment Process
Choi, In-Su ; Jung, Hoe-Suk ; Han, Ihn-Sup ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1113~1122
In order to find the way to solve the problem of sewage sludge discharge into the ocean, the sludge solubilization by ultrasonic and the improvement methods of wastewater treatment process were studied. In the membrane bioreactor the sludge retention time was stepwise increased from 5.1 day to 442 days where the biomass average concentration has been increased from
respectively. At the same time, the biomass yield coefficients were reduced from 0.5-0.7 at SRT=5.1 day to 0.005-0.007 at SRT=442 days which means the reduction of sludge production. Oxygen mass transfer coefficients and
-factor were investigated with changing stirrer speed to find the relation between the high biomass concentration and aeration efficiency in the propeller loop reactor. As a result of sludge solubilization, the solubilization of sludge by ultrasound was increased with increasing energy input and it led to improved anaerobic digestion rate with more biogas production than that of nonsolubilized sewage sludge.
Characteristics of Noise Radiated at Dental Clinic
Ji, Dong-Ha ; Choi, Mi-Suk ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1123~1128
Noise radiated from medical treatment at dental clinic will affect the patients. On such point of view, We investigated the noise characteristics in case of medical treatment (scaling, tooth eliminating) and non-medical examination (idling) and also evaluated the degree of indoor noise using the evaluation index such as PSIL, NRN and made up a questionnaire about the reactions to noise. As a result of noise evaluation, it shows that the range of noise level is 67.7~78.3 dB(A) and frequency is very high (above 4 k Hz) and respondents are affected by noise (unpleasantness, hesitation to visit dental clinic, shivering with noise, being astonishment). Analysis by PSIL showed that it was no problem to conversation between worker and patient. But it exceeded the noise permit level in working space by NR-curve. To relieve a fear of noise in patients, they are considered to offer the ear protection, choose the low noisevibration equipment and use the masking effect. They are of great advantage to dental clinics to i prove dental service and competitiveness.
Characterization and Phytotoxicity of Zn, Zn Oxide Nanoparticles
Kim, Sung-Hyun ; Baek, Ju-Hyung ; Song, Yi-Reh ; Sin, Min-Joo ; Lee, In-Sook ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1129~1134
Increasing application of nanotechnology highlights the need to clarify nanotoxity and nanoparticles characterization. However, few researches have focused on phytotoxicity of nanoparticles. This study was to examine phytotoxicity on Cumumis sativus seedling and the dissolution of Zn, ZnO nanoparticles in hydroponic culture system. Results of this study; characteristics of Zn, ZnO nanoparticles are more aggregated in nutrient solution than deionized water. C. sativus biomass significantly reduced in the nutrient solution were higher than 100 mg/L, and Zn toxicity showed
> Zn> ZnO NPs. Results of transmission electron microscopy images, Zn and ZnO nanoparticles greatly adhered onto the root cell wall and nanoparticles were observed in the root cell.
Formation and Characteristics of Granular Sludge Using Aerobic Granular Reactor
Lee, Bong-Seob ; Choi, Seong-Woo ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1135~1142
This study was carried out to investigate of aerobic granulation by using aerobic granular reactor. To make aerobic granular sludge in short period of time, we used polymer. In reactor, we have studied on physicochemical characteristics of particle size, density, and microbial secreting polymer depending on aerobic particle's formation. The results of running aerobic granular reactor with 3, 6, 9
of COD loading rate and 35 days reaction time showed that particle size were 3.6 mm, 4.3 mm, and 3.4 mm respectively. The settling velocities were 1.5 cm/s, 1.6 cm/s, and 1.2 cm/s respectively. The microbic growth rates were 0.12
, and 0.133
respectively. The overall result of aerobic granular reactor showed that
of COD loading rate had optimal physicochemical characteristics.
Formation and Characteristics of Aerobic Granular Sludge Using Polymer in Sequencing Batch Reactor
Lee, Bong-Seob ; Choi, Seong-Woo ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1143~1150
This study was carried out to investigate of aerobic granulation by using sequencing batch reactor(SBR). To make aerobic granular sludge in short period of time, we used polymer. In case of SBR, we have studied on physicochemical characteristics of particle size, settling velocity, surface charge, and specific oxygen utilization rate(SOUR) depending on aerobic particle's formation. The results of running SBR with
of COD loading rate and 20 days reaction time showed that aerobic particle size, settling velocity, SOUR, surface charge, polysaccharide/protein(PS/PN) ratio were 2.6 mm, 1.7 cm/s,
, and 2.06 mg/mg respectively.
Perfluorinated Compounds; New Challenge and Problem
Son, Hee-Jong ; Yoo, Soo-Jeon ; Roh, Jae-Soon ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1151~1160
Perfluorinated compounds (PFCs) have been recognized as emerging environmental pollutants and are widely distributed all over the world. These compounds are hardly degradable and cause bioaccumulation and biomagnification during present for a long time in the environment: thereby after adversely biota and human bodies. It is difficult to remove PFCs using conventional water/wastewater treatment because of resistant property to photodecomposition, biodegradation and chemical decomposition. Moreover, domestic literature data on the pollution of PFCs in rivers and lakes are limited. In this paper, species, sources and risk of PFCs as well as behavior properties in drinking water/wastewater and treatment processes are demonstrated to encourage the domestic concern about PFCs.
Patterns of Offensive Odor Compounds According to Blocks in Shiwha Industrial Complex
Byeon, Sang-Hoon ; Lee, Jung-Geun ; Kim, Jung-Keun ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 12, 2009, Pages 1161~1168
This research was conducted on characteristic of offensive odors in Shihwa industrial complex. Result of blocks distribution of TVOC indicates that mechanic block, site D, was the highest concentration (74 ppb). Chemistry block, site A, was the second highest concentration (50 ppb). Also, mixed blocks, metal blocks and park etc. were measured almost similar concentration about 30 ppb, but mixed block, site F, was the place where concentrations were the smallest. Average of TVOC was shown about 35 ppb concentration. Aldehydes including acetaldehyde, butyraldehyde and hydrogen sulfide concentrations were prevalent among offensive odors in Shihwa industrial complex. Comparing the offensive odor intensity mostly about acetaldehyde, butyraldehyde and hydrogen sulfide which contain high offensive odor intensity showed results that sites A, B (chemistry block) and site D, I (mechanic block) site H (metal block) have showed the intensity over 1. In the case of acetaldehyde, relatively the high odor intensities over '2' were able to obtain in many cases. The correlation coefficient (r) for hydrogen sulfide was 0.91, so that high positive correlation exists between offensive odor intensity and the hydrogen sulfide element. Butyraldehyde also showed high positive correlation coefficient, as 0.82. Correlation coefficient of acetaldehyde that had the highest value as offensive odor substance was 0.62, had somewhat correlation with offensive odor intensity.