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한국물환경학회지 update

Journal of Korean Society on Water Environment

  • : 한국물환경학회(구 한국수질보전학회)
  • : 공학분야  >  환경공학
  • : KCI등재
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  • : 연속간행물
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  • : 2289-0971
  • : 2289-098X
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수록정보
수록범위 : 1권1호(1985)~36권3호(2020) |수록논문 수 : 2,310
한국물환경학회지
36권3호(2020년 05월) 수록논문
최근 권호 논문
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KCI등재

1생체고분자물질 농도와 이온강도에 따른 점토입자 현탁액의 응집핵-응집체 이군집 응집 특성 연구

저자 : 김재인 ( Jae In Kim ) , 이병준 ( Byung Joon Lee )

발행기관 : 한국물환경학회(구 한국수질보전학회) 간행물 : 한국물환경학회지 36권 3호 발행 연도 : 2020 페이지 : pp. 185-193 (9 pages)

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Bimodal flocculation describes the aggregation and breakage processes of the flocculi (or primary particles) and the flocs in the water environment. Bimodal flocculation causes bimodal size distribution with the two separate peaks of the flocculi and the flocs. Extracellular polymeric substances and ionic species common in the water environment increase the occurrence of bimodal flocculation and flocculi-floc size distribution, under the flocculation mechanisms of electrostatic attraction and polymeric bridging. This study investigated bimodal flocculation and flocculi-floc size distribution, with respect to the extracellular polymeric substance concentration and ionic strength in the kaolinitecontaining suspension. The batch flocculation tests comprising 0.12 g/L of kaolinite showed that the highest flocculation potential occurred at the lowest xanthan gum (as extracellular polymeric substances) concentration, under all the ionic strengths of 0.001, 0.01, and 0.1 M NaCl. Also, it was important to note that the higher ionic strength resulted in the higher flocculation potential, at all the xanthan gum concentrations. The bimodal flocculation and flocculi-floc size distribution became apparent in the experimental conditions, which had low and intermediate flocculation potential. Besides the polymeric bridging flocculation, steric stabilization increased the flocculi mass fraction against the floc mass fraction, thereby developing the bimodal size distribution.

KCI등재

2낙동강 하류 수역에서 분자량 크기 및 형광특성을 고려한 용존유기물질 특성

저자 : 지화성 ( Hwaseong Ji ) , 김미희 ( Mihee Kim ) , 이유정 ( Youjung Lee ) , 손희종 ( Heejong Son )

발행기관 : 한국물환경학회(구 한국수질보전학회) 간행물 : 한국물환경학회지 36권 3호 발행 연도 : 2020 페이지 : pp. 194-205 (12 pages)

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The characteristics and behavior of dissolved organic matter (DOM) were determined by analyzing the molecular weight fractions and fluorescence properties of water samples in the downstream Nakdong River. Biogeochemical water quality parameters and fluorescent dissolved organic matter (FDOM) were analyzed at five sampling points in the downstream area of the Nakdong River January-August 2019. The molecular weight fractions of the DOM were separated by the Liquid Chromatography-Organic Carbon Detection (LC-OCD). The DOM predominantly comprised humic substances, followed by the building blocks, low molecular weight neutrals and biopolymers. The hydrophobic (aromatic) and hydrophilic properties were shown as coexisting, as most of the SUVA254nm values were under four. The FDOM was characterized as humic-like (FDOMH) with allochthonous origin and protein-like (FDOMP) with autochthonous origin; the FDOMH with autochthonous origin was also identified. The FDOMH relies on the aromaticity of the allochthonous organic matter and increases during summer. The FDOMH and FDOMP, which depend on the biodegradable dissolved organic matter from phytoplankton, were highly fluorescent in winter. The allochthonous organic matter was the dominant factor contributing to the behavior of the DOM, externally introduced to the river by rainfall. The FDOM only minimally contributed to the behavior of the DOM. It can be explained as the seasonal characteristics of the DOM, varied by the source of the organic matter.

KCI등재

3도시유역의 물순환 및 수질 개선을 위한 저영향개발 시설의 비용 효율 분석

저자 : 최정현 ( Jeonghyeon Choi ) , 김경민 ( Kyungmin Kim ) , 심인경 ( Inkyeong Sim ) , 이옥정 ( Okjeong Lee ) , 김상단 ( Sangdan Kim )

발행기관 : 한국물환경학회(구 한국수질보전학회) 간행물 : 한국물환경학회지 36권 3호 발행 연도 : 2020 페이지 : pp. 206-219 (14 pages)

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As urbanization and impermeable areas have increased, stormwater and non-point pollutants entering the stream have increased. Additionally, in the case of the old town comprising a combined sewer pipe system, there is a problem of stream water pollution caused by the combined sewer overflow. To resolve this problem, many cities globally are pursuing an environmentally friendly low impact development strategy that can infiltrate, evaporate, and store rainwater. This study analyzed the expected effects and efficiency when the LID facility was installed as a measure to improve hydrologic cycle and water quality in the Oncheon stream in Busan. The EPA-SWMM, previously calibrated for hydrological and water quality parameters, was used, and standard parameters of the LID facilities supported by the EPA-SWMM were set. Benchmarking the green infrastructure plan in New York City, USA, has created various installation scenarios for the LID facilities in the Oncheon stream drainage area. The installation and maintenance cost of the LID facility for scenarios were estimated, and the effect of each LID facility was analyzed through a long-term EPA-SWMM simulation. Among the applied LID facilities, the infiltration trench showed the best effect, and the bio-retention cell and permeable pavement system followed. Conversely, in terms of cost-efficiency, the permeable pavement systems showed the best efficiency, followed by the infiltration trenches and bio-retention cells.

KCI등재

4아나목스 농후배양에서 암모니아 산화균의 자생 특성

저자 : 배효관 ( Hyokwan Bae ) , Tanusree Paul , 정진영 ( Jin-young Jung )

발행기관 : 한국물환경학회(구 한국수질보전학회) 간행물 : 한국물환경학회지 36권 3호 발행 연도 : 2020 페이지 : pp. 220-228 (9 pages)

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Anaerobic ammonium oxidation (AMX) is a cost-efficient biological nitrogen removal process. The coexistence of ammonia-oxidizing bacteria (AOB) in an AMX reactor is an interesting research topic as a nitrogen-related bacterial consortium. In this study, a sequencing batch reactor for AMX (AMX-SBR) was operated with a conventional activated sludge. The AOB in an AMX bioreactor were identified and quantified using terminal restriction fragment length polymorphism (T-RFLP) and real-time qPCR. A T-RFLP assay based on the ammonia monooxygenase subunit A (amoA) gene sequences showed the presence of Nitrosomonas europaea-like AOB in the AMX-SBR. A phylogenetic tree based on the sequenced amoA gene showed that AOB were affiliated with the Nitrosomonas europaea/mobilis cluster. Throughout the enrichment period, the AOB population was stable with predominant Nitrosomonas europaea-like AOB. Two OTUs of amoA_SBR_JJY_20 (FJ577843) and amoA_SBR_JJY_9 (FJ577849) are similar to the clones from AMX-related environments. Real-time qPCR was used to quantify AOB populations over time. Interestingly, the exponential growth of AOB populations was observed during the substrate inhibition of the AMX bacteria. The specific growth rate of AOB under anaerobic conditions was only 0.111 d-1. The growth property of Nitrosomonas europaea-like AOB may provide fundamental information about the metabolic relationship between the AMX bacteria and AOB.

KCI등재

5토양수분 저류 기반의 간결한 준분포형 수문분할모형 개발

저자 : 최정현 ( Jeonghyeon Choi ) , 김령은 ( Ryoungeun Kim ) , 김상단 ( Sangdan Kim )

발행기관 : 한국물환경학회(구 한국수질보전학회) 간행물 : 한국물환경학회지 36권 3호 발행 연도 : 2020 페이지 : pp. 229-244 (16 pages)

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Hydrologic models, as a useful tool for understanding the hydrologic phenomena in the watershed, have become more complex with the increase of computer performance. The hydrologic model, with complex configurations and powerful performance, facilitates a broader understanding of the effects of climate and soil in hydrologic partitioning. However, the more complex the model is, the more effort and time is required to drive the model, and the more parameters it uses, the less accessible to the user and less applicable to the ungauged watershed. Rather, a parsimonious hydrologic model may be effective in hydrologic modeling of the ungauged watershed. Thus, a semi-distributed hydrologic partitioning model was developed with minimal composition and number of parameters to improve applicability. In this study, the validity and performance of the proposed model were confirmed by applying it to the Namgang Dam, Andong Dam, Hapcheon Dam, and Milyang Dam watersheds among the Nakdong River watersheds. From the results of the application, it was confirmed that despite the simple model structure, the hydrologic partitioning process of the watershed can be modeled relatively well through three vertical layers comprising the surface layer, the soil layer, and the aquifer. Additionally, discussions were conducted on antecedent soil moisture conditions widely applied to stormwater estimation using the soil moisture data simulated by the proposed model.

KCI등재

6하천등급화 모델을 이용한 삽교호 수질관리 방안에 관한 연구

저자 : 최정호 ( Jeongho Choi ) , 김홍수 ( Hongsu Kim ) , 조병욱 ( Byunguk Cho ) , 박상현 ( Sanghyun Park ) , 이무규 ( Mukyu Lee )

발행기관 : 한국물환경학회(구 한국수질보전학회) 간행물 : 한국물환경학회지 36권 3호 발행 연도 : 2020 페이지 : pp. 245-254 (10 pages)

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Water quality improvement projects are being implemented without predicting the effect of water quality improvement on Lake Sapgyo. As the method of selecting the target stream for the effective conduct of water quality improvement projects the method of rating the streams were studied. To build a stream grading method, 60 major streams in the Lake Sapgyo system were monitored. The selection method of rivers subject to priority management for water quality improvement was applied to the stream grading method using the Analytic Hierarchy Process (AHP). The analysis of importance by site by stream grading method revealed the following: water quality (36.0%), flow (26.1%), travel load (13.4%), TMDL density (12.0%), TMDL (8.9%), and area (3.7%). The pollution level of the river was scored by using the stream grading method, and the ranking of 51 streams was calculated. Based on this, the group was classified into six grades (A-F). Among the groups, the F and E groups were selected as the priority management streams. Cheonan-Cheon (Cheonan City) was selected as the first stream to establish water quality improvement measures in the Lake Sapgyo system, and Seowoo-Cheon (Dangjin City) was selected as the second site, and Oncheon-Cheon (Asan City) was selected as the third site. Each local government is expected to improve the water quality improvement effect with limited resources when establishing and implementing water quality improvement measures for the streams (F group, E group) to be managed in this study.

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1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

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2미국의 비트코인 규제

(2006)홍길동심리학41회 피인용

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2미국의 비트코인 규제

(2006)홍길동41회 피인용

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