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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Korean Society on Water Environment
Journal Basic Information
Journal DOI :
Korean Society on Water Quality
Editor in Chief :
Volume & Issues
Volume 30, Issue 6 - Nov 2014
Volume 30, Issue 5 - Sep 2014
Volume 30, Issue 4 - Jul 2014
Volume 30, Issue 3 - May 2014
Volume 30, Issue 2 - Mar 2014
Volume 30, Issue 1 - Jan 2014
Selecting the target year
Quality Assessment of the Nationwide Water Pollution Source Survey Results on the Prioritized Toxic Water Pollutants from Industrial Sources in the Geum-River Basin by Exploratory Data Analysis
Kim, Eun-Ah ; Kim, Yeon-Suk ; Kim, Yong Seok ; Rhew, Doug Hee ; Jung, Je Ho ;
Journal of Korean Society on Water Environment, volume 30, issue 6, 2014, Pages 585~595
DOI : 10.15681/KSWE.2014.30.6.585
The temporal trends of the prioritized toxic water pollutants generated and discharged from the industrial facilities in the Geum-River basin, Korea were analyzed with the results of the nationwide Water Pollution Source Survey conducted in 2001 - 2012. The statistical results indicated rapid increase in the volume of raw toxic wastewaters whereas the amount of each toxic pollutant kept fluctuating for 12 years. Serious discrepancies in the survey data of the same type of industries demonstrated a low reliability of the survey result, which stemmed from several error factors. A unit-load for each type of industrial facility was devised to estimate the amount of prioritized toxic water pollutant based on the total volume of industrial wastewater generated from the same type of industrial facilities. The supplementary measures with an effective permit issuance policy and adding survey parameters of terminal wastewater treatment plants to use them as references to the Water Pollution Source Survey were suggested as means to minimize the errors associated with the false reports from the industries.
The Water Quality Assessment based on the Algal Communities and Biotic Indices in Hongcheon river, Gangwon-do
Baek, Jun Soo ; Kim, Hun Nyun ; Lee, Ok-Min ;
Journal of Korean Society on Water Environment, volume 30, issue 6, 2014, Pages 596~604
DOI : 10.15681/KSWE.2014.30.6.596
This research has studied the physicochemical environmental factors and communities of epilithic diatom and phytoplanktons at Hongcheon river from December 2011 to September 2012. In case of TN, the result was hypertrophic, and for TP, it ranged from mesotrophic to eutrophic. As for BOD, Hongcheon river was rated level II or better, according to the water quality level; values were found to be below 3mg/L at most sites. Total of 83 and 114 taxa of epilithic diatom and phytoplanktons respectively, were found during the research. When assessed using the TSI, it ranged from oligomesotrophic to eutrophic. In case of DAIpo, it ranged from 64.1 to 99.5, and TDI ranged from 51.5 to74.0. These results signify good water quality, level B or better, for Hongcheon river. P-IBI was rated moderate to low, which showed higher pollution than other indices. Among the biological water quality measures analyzed in the Hongcheon river study, DAIpo best matches TDI and BOD, while TDI showed greater pollution. Therefore, P-IBI appears to be inappropriate when assessing the domestic small rivers and lakes.
Characteristics of Biodegradation of Organic Matters in the Nakdong River Watershed
Kim, Jung Sun ; Kang, Lim Seok ;
Journal of Korean Society on Water Environment, volume 30, issue 6, 2014, Pages 605~611
DOI : 10.15681/KSWE.2014.30.6.605
This research was carried out to examine the concentration and fate of dissolved organic matter due to the increased detention time in middle and down stream of the Nakdong River. Aldo the characteristics of biodegradation of DOM were investigated according to the various water sources. The approaches used to characterize DOM biodegradability include the changes in DOC concentration and DOM fraction. Long-term biodegradation test for each organic source was also conducted. As the result, maximum 50% of DOC was reduced during the first 30 days of biodegradation tests. After 30 days, biodegradation of organic matter was continuously progressed, as showing continuous reduction of DOC. While DOC concentration was reduced, SUVA values for the organic matters were increased. Properties of dissolved organic matter by water sources also showed decreasing hydrophilic components while showing increased hydrophobic components. The more rapid reduction of the hydrophilic components than hydrophobic components might be due to the preferential degradation of the hydrophilic components by microorganisms during biodegradation process.
The Dynamic of Phytoplankton Communities and the Biological Water Quality Assessment at Three Artificial Weirs in Downstream of Namhan-river
Shin, Hyun-Joo ; Lee, Ok-Min ;
Journal of Korean Society on Water Environment, volume 30, issue 6, 2014, Pages 612~621
DOI : 10.15681/KSWE.2014.30.6.612
Physicochemical factors and the phytoplankton communities in the downstream area of Namhan-River were investigated from June 2012 to November 2013. We also assessed water quality using biological water quality indices. Total nitrogen was 2.4 mg/L, total phosphorus was 0.04 mg/L, and biological oxygen demand was 1.1 mg/L. This resulted in a level 2 (Ib, good) water quality rating. A total of 259 phytoplankton taxa were classified, consisting of 26 families, two subfamilies, 64 genera, 222 species, 32 varieties, and five formas. Bacillariophyceae dominated during a1l seasons and at all sites. The dominant species were Aulacoseira granulata, Cyclotella meneghiniana, C. stelligera, Melosira varians, Cocconeis placentula var. lineata, Nitzschia palea, N. amphibia, Cymbella minuta, and Achnanthes convergens. The diatom assemblage index for organic pollution values was level A-D, and TDI was level B-D. P-IBI at most sites was at the M (moderate) level, but TSI was at the E (eutrophic) level. Most indices dropped from upstream to downstream.
The Estimation of Pollution Loads in First-flush Overflows with Various Rainfall and Regional Characteristics
Kim, Hongtae ; Shin, Dongseok ; Kim, Yongseok ;
Journal of Korean Society on Water Environment, volume 30, issue 6, 2014, Pages 622~631
DOI : 10.15681/KSWE.2014.30.6.622
The purpose of this research was to find a proper disposal rainfall extent to improve water quality. SWMM was applied to select catchment area and tested first flush load and rainfall extent. BOD 40mg/L was selected to dispose the first flush and sewer overflow with the same as the criteria of Sewerage Act. Design rainfall, BOD load ratio of first flush sewer overflow, and the ratio of disposal flow were analyzed under various rainfall distribution. BOD load and design rainfall to treat overflow in situation of first flush extent with 4.3~17.4% were 56~87% and 3.8~6.8 mm/day, respectively. In urban area, first flush loads were not correspond to land activities, but tend to increase with increasing rainfall amount and drainage area. The more the distribution of rainfall is similar to Huff-frontal or central distribution of rainfall, the more increase the first flush loads.
Interlaboratory Study for Proficiency Testing on the Water Toxicity Determinations by Acute Toxicity Test with Daphnia magna
Kim, Jongmin ; Shin, Kisik ; Yu, Soonju ; Kim, Myeong Ock ; Choe, Sung Hun ;
Journal of Korean Society on Water Environment, volume 30, issue 6, 2014, Pages 632~637
DOI : 10.15681/KSWE.2014.30.6.632
Proficiency testing by interlaboratory comparisons is used to determine the performance of individual laboratories. In order to verify the quality of acute toxicity testing with Daphnia magna, National Institute of Environmental Research in South Korea is regularly organizing interlaboratory comparisons to estimate the analytical accuracy of different laboratories. Total 58 laboratories located in South Korea took part in interlaboratory proficiency testing scheme with three proficiency testing samples. TU(Toxic Unit) values of each laboratory were determined and robust z-score was calculated in order to evaluate the proficiency levels. Based on the robust z-score classification, 74% of the participant laboratories showed a satisfactory performance (43 laboratories). The main reason of `unsatisfactory` performance seemed to be considered that the unsuitable management of test organism incubation system and the lack of experience on the identification of the test organism condition by effect of toxicity.
Analysis of Effects on Soil Erosion Reduction of Various Best Management Practices at Watershed Scale
Lee, Dong Jun ; Lee, Ji Min ; Kum, Donghyuk ; Park, Youn Shik ; Jung, Younghun ; Shin, Yongchul ; Jeong, Gyo-Cheol ; Lee, Byeong Cheol ; Lim, Kyoung Jae ;
Journal of Korean Society on Water Environment, volume 30, issue 6, 2014, Pages 638~646
DOI : 10.15681/KSWE.2014.30.6.638
Soil erosion from agricultural fields leads to various environmental problems weakening the capabilities of flood control and ecosystem in water bodies. Regarding these problems, Ministry of Environment of South-Korea prepared various structural and non-structural best management practices (BMPs) to control soil erosion. However, a lot of efforts are required to monitor and develop BMPs. Thus, modeling techniques have been developed and utilized for these issues. This study estimated the effectiveness of BMPs which are a vegetation mat with infiltration roll and Roll type vegetation channel using Soil and Water Assessment Tool (SWAT) model through the adjustment of the conservation practice factors, P factors, for Universal Soil Loss Equation which were calculated by monitoring data collected at the segment plots. Each BMP was applied to the areas with slopes ranged from 7% to 13% in the Haeanmyeon watershed. As a result of simulation, the vegetation mat with infiltration roll and Roll type vegetation channel showed 55% and 59% efficiency of soil erosion reduction, respectively. Also, Vegetation mat with infiltration roll and Roll type vegetation channel showed each 11.2% and 11.8% efficiency in reduction of sediment discharge. These roll type vegetation channel showed greater efficiency of soil erosion reduction and sediment discharge. Based on these results, if roll type vegetation channel is widely used in agricultural fields, reduction of soil erosion and sediment discharge of greater efficiency would be expected.
Treatment of Acid Mine Drainage using Eggshells and Microalgae
Choi, Hee-Jeong ;
Journal of Korean Society on Water Environment, volume 30, issue 6, 2014, Pages 647~652
DOI : 10.15681/KSWE.2014.30.6.647
The aim of this study was to investigate the heavy metal removal and biomass productivity in the Acid Mine Drainage (AMD) using eggshell and microalgae. The experiment was operated 6 days in the eggshell and microalgae hybrid system, and using eggshell powder and microalgae as Chlorella vulgaris. The obtained result indicated that the biomass productivity of 2.82 g/L/d from 1.12 g/L initial concentration in 6 days was reached with light transmittance of 97% at a 305 mm depth in the optical panel photobioreactor (OPPBR). The total removal efficiency of Fe, Cu, Zn, Mn and Cd was found to be 98.92%, 99.91%, 98.78%, 88.99% and 98.00% in the AMD using eggshell and Chlorella vulgaris hybrid system, respectively. Additionally, there were significant relationships between biomass and concentration of each heavy metal (
Treatment of Phosphorus Species using Iron Coagulation and Fenton Oxidation
Park, Sung-Hwan ; Moon, Byung-Hyun ;
Journal of Korean Society on Water Environment, volume 30, issue 6, 2014, Pages 653~657
DOI : 10.15681/KSWE.2014.30.6.653
addition for fenton oxidation on iron coagulation for treatment of phosphorus species, such as orthophosphate, metaphosphate, pyrophosphate, organic phosphate, were investigated. The effects of coagulant dosage, hydrogen peroxide dosage and the combined sequence ferric coagulation and
addition for fenton oxidation and coagulation were studied. The characteristics of floc growth rate were monitored using the PDA. The removal efficiencies of phosphorus species by iron coagulation were increased as Fe/P molar ratio increased. However, the removal efficiencies of metaphosphate, pyrophosphate, organic phosphate by a ferric coagulation were not increased as Fe/P molar ratio increased. The removal efficiency of metaphosphate, pyrophosphate, organic phosphate was increased by using iron coagulation and
addition for fenton oxidation. The result indicated that non-reactive phosphorus after iron coagulation was changed to reactive phosphorus by
addition for fenton oxidation and the oxidized iron enhanced the coagulation efficiencies.
Formation of Phytoplankton Community and Occurrences of Odorous Compounds by Sediment Incubation
Kim, Yong-Jin ; Youn, Seok-Jea ; Kim, Hun-Nyun ; Park, Eung-Roh ; Hwang, Moon-Young ; Park, Jin-Rak ; Lee, Byoung-Cheun ; Lee, Jae-Kwan ;
Journal of Korean Society on Water Environment, volume 30, issue 6, 2014, Pages 658~664
DOI : 10.15681/KSWE.2014.30.6.658
In this study, Uiam-sediment(US) and Gongji-sediment(GS) were incubated to analyze the formation of phytoplankton community and occurrences of odorous compounds from benthic cyanobacteria. For the phytoplankton, 45 and 40 taxa were found in GS and US, respectively. The phytoplankton species detected in the harmful algae included Microcystis, Anabaena and Oscillatoria. As a result, a standing crop of phytoplankton appeared to be in the range of
cells/mL in GS,
cells/mL in US, and as the incubation progressed, benthic cyanobacteria was increased. The highest number of akinetes was shown in the initial incubation, and akinetes was reduced by 10% on day 4 of incubation start. After reduction of akinetes incubated for 4 days in US and 15 days in GS, Anabaena appeared from the surface water. Benthic cyanobacteria such as Oscillatoria tenuis, O. limosa and Lyngbya hieronymusii was dominant in GS (max.
) and US (max.
), forming cyanobacterial mats in sediment surface. Cyanobacterial mats were suspended after 10~12 days incubation in GS and US. Before and after the suspension of cyanobacterial mats, the concentration of geosmin was the highest in GS(115 ng/L) and US(175 ng/L). In the second suspension of cyanobacterial mats in GS, the concentration of 2-MIB was increased to the range of 22~92 ng/L.
Elemental Stoichiometry of Natural Phytoplankton Communities in Reservoirs of the Han River Systems
Park, Hae-Kyung ;
Journal of Korean Society on Water Environment, volume 30, issue 6, 2014, Pages 665~672
DOI : 10.15681/KSWE.2014.30.6.665
Elemental cellular stoichiometry of natural phytoplankton communities was examined in six large dam reservoirs in the Han River system. Carbon (C) and nitrogen (N) contents of the phytoplankton-dominated seston from Lake Soyang was higher than that from other lakes. Phosphorus (P) content showed slight variations among six lakes in the range of
. The phosphorus concentrations of lake water showed obvious positive relationship with P and C contents of the phytoplankton-dominated seston. In all six lakes, N:P ratios and C:P ratios in the phytoplankton-dominated seston were more than 23 and 133 respectively, indicating the phytoplankton communities in six lakes have been exposed in phosphorus limited condition. The relative abundance of diatoms showed significant negative correlation with C, N, P contents of the phytoplankton-dominated seston and that of cyanobacteria showed significant positive correlation. Elemental stoichiometry of diatoms-dominated seston showed distinctive less content than that of cyanobacteria-dominated seston. The cellular N:P ratios of diatoms- and cyanobacteria-dominated seston indicate that both main classes of phytoplankton in six lakes are in phosphorus deficiency. Elemental stoichiometry of the phytoplankton-dominated seston in this study could be used for the further ecological stoichiometric studies in six lakes.
Operational Water Temperature Forecast for the Nakdong River Basin Using HSPF Watershed Model
Shin, Chang Min ; Na, Eun Hye ; Kim, Duck Gil ; Kim, Kyunghyun ;
Journal of Korean Society on Water Environment, volume 30, issue 6, 2014, Pages 673~682
DOI : 10.15681/KSWE.2014.30.6.673
A watershed model was constructed using Hydrological Simulation Program Fortran to predict the water temperature at major tributaries of Nakdong River basin, Korea. Water temperature is one of the most fundamental indices used to determine the nature of an aquatic environment. Most processes of an aquatic environment such as saturation level of dissolved oxygen, the decay rate of organic matter, the growth rate of phytoplankton and zooplankton are affected by temperature. The heat flux to major reservoirs and tributaries was analyzed to simulate water temperature accurately using HSPF model. The annual mean heat flux of solar radiation was estimated to
, longwave radiation to
, evaporative heat loss to
, sensible heat flux to
, precipitation heat flux to
, bed heat flux to
respectively. The model was calibrated at major reservoir and tributaries for a three-year period (2008 to 2010). The deviation values (Dv) of water temperature ranged from -6.0 to 3.7%, Nash-Sutcliffe efficiency(NSE) of 0.88 to 0.95, root mean square error(RMSE) of
. The operational water temperature forecasting results presented in this study were in good agreement with measured data and had a similar accuracy with model calibration results.
Research Trends of Food Chain Transfer of Nanomaterials in Freshwater and Marine Ecosystems
Chae, Yooeun ; An, Youn-Joo ;
Journal of Korean Society on Water Environment, volume 30, issue 6, 2014, Pages 683~690
DOI : 10.15681/KSWE.2014.30.6.683
Nanomaterials are used in a range of fields, including industry, medicine, aerospace, and manufacturing, due to their unique and useful properties. In recent years, nanotechnology has developed rapidly, and the amount of nanomaterials used in various fields has increased consistently. As a result, nanomaterials are released into the aquatic and soil ecosystem, posing potential risks to organisms and environment. These materials can enter the cells and may cause serious damage to organisms. Furthermore, they can be transferred through trophic levels and food web, thereby leading to bioconcentration and biomagnification. In this study, we analyzed the trends in research on food chain transfer of nanomaterials and investigated the techniques used in the research. Although many studies have been underway, there is a need for further advanced studies on higher trophic levels and complex microcosm and mesocosm. Furthermore, study topics should be expanded to include various types of nanomaterials and varied species and trophic levels.