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대한상하수도학회> 상하수도학회지> 논문(論文) : 수리구조 개선을 통한 다중 펌프 흡수정에서 발생하는 보텍스 방지 대책 수립에 관한 연구

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논문(論文) : 수리구조 개선을 통한 다중 펌프 흡수정에서 발생하는 보텍스 방지 대책 수립에 관한 연구

Research Papers : Modifications to Hydraulic Structures for Anti-submerged Vortex in a Multi Pump Intake using CFD simulation Technique

박노석 ( No Suk Park ) , 김성수 ( Seong Su Kim ) , 김종오 ( Woo Chang Jeong ) , 정우창 ( Jong Oh Kim )
  • : 대한상하수도학회
  • : 상하수도학회지 25권1호
  • : 연속간행물
  • : 2011년 02월
  • : 31-39(9pages)

DOI


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초록 보기

In order to suggest the methodology for achieving anti-vortex device within multi pump intake well, CFD(Computational Fluid Dynamics) simulation were conducted for two alternative suggestions. Multi-intake sump model with anti-vortex device basins were designed and the characteristics of submerged vortex were investigated in the flow field by numerical simulation. From the results of simulations, to install the horizontal plate and vertical cross plates within basins were effective for preventing air-induction vortex.

UCI(KEPA)

I410-ECN-0102-2012-530-001639801

간행물정보

  • : 공학분야  > 토목공학
  • : KCI등재
  • :
  • : 격월
  • : 1225-7672
  • : 2287-822X
  • : 학술지
  • : 연속간행물
  • : 1987-2020
  • : 1979


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1논문(論文) : 개정 토양용출시험법에 따른 비소오염토양의 고형화/안정화 공법 국내 적용성 평가

저자 : 홍성혁 ( Seong Hyeok Hong ) , 박혜민 ( Hye Min Park ) , 최원호 ( Won Ho Choi ) , 박주양 ( Joo Yang Park )

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 25권 1호 발행 연도 : 2011 페이지 : pp. 1-5 (5 pages)

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Arsenic is one of the most abundant contaminant found in waste mine tailings and soil around refinery, Because of its carcinogenic property, the countries like United States of America and Europe have made stringent regulations which govern the concentration of arsenic in soil. The study focuses on solidification/stabilization for removal of arsenic from soil. Cement was used to solidify/stabilize the abandoned soil primarily contaminated with arsenic (up to 68.92 mg/kg) in and around refinery. Solidified/stabilized (s/s) forms in the range of cement contents 5-30 wt % were evaluated to determine the optimal binder content. Revised Korean standard leaching tests (KSLT), toxicity characteristic leaching procedures (TCLP), Old Korea standard leaching test and revised Korea standard leaching test were used for chemical characterization of the S/S forms. The addition of 10 % cement remarkably reduced the leachability of arsenic in contaminated soil. The concentration of As in leachate of TCLP, KSLT, and old KSLT for soil are below the standard. However that in leachate of revised KSLT is above the standard. Because of extraction fluid used in revised KSLT is very strong acid. It is arsenic in s/s with binder should be exhaustingly leached. Therefore S/S process would not be available for As treatment in soil in Korea.

2논문(論文) : 맛있는 물 지표 개발을 통한 국내 약수 평가

저자 : 이승재 ( Seung Jae Lee ) , 이상은 ( Sang Eun Lee ) , 김종곤 ( Jong Gon Kim ) , 박희경 ( Hee Kyung Park )

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 25권 1호 발행 연도 : 2011 페이지 : pp. 7-14 (8 pages)

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This study was motivated by the purpose of improving the O-Index, currently used to quantify water tasty. The authors first develop the M-Index after normalizing Ca, K, and SiO2 concentrations in the spring water, in that the concentrations are subject to their log-normal distributions. The M-Index is then compared with the O-Index based on the results of sensory tests, revealing that sensory tests are correlated with the M-Index much more than the O-Index. Furthermore, the developed index is applied to evaluate water sampled from 53 springs in Korea. It is concluded that water, sampled from five most famous springs, has high values in M-Index. In addition, water, collected from springs that are relatively accessible, contains low values, and thus is expected not to tasty good.

3논문(論文) : 비소제거를 위한 Fe(3)-ettringite 합성방법 및 특성 연구

저자 : 홍성혁 ( Seong Hyeok Hong ) , 박혜민 ( Hye Min Park ) , 최원호 ( Won Ho Choi ) , 박주양 ( Joo Yang Park )

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 25권 1호 발행 연도 : 2011 페이지 : pp. 15-21 (7 pages)

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Arsenic is one of the most abundant contaminant found in waste mine tailings, because of it`s carcinogenic property, the countries like United states of America and Europe have made stringent regulations which govern the concentration of arsenic in drinking water. The current study focuses on different treatment methods for removal of arsenic from waste water. Treatment method the high strength arsenic waste water is treated with Fe(III)-ettringite by co-precipitation method. Number of experiments were carried out to decide the optimal dosage of Fe(III)-ettringite to treat arsenic waste water. The Fe(III)-ettringite was synthesized by taking appropriate equivalent ratios of calcium oxide and ferric chloride in proportion to the arsenic. The best removal efficiencies of 94% were observed at a As/(Ca: Fe) ratio of 1:3. The maximum removal of arsenic was observed in pH range of 12. But as the pH increases the arsenic removal efficiency decreases as portlandite is formed in the pH above 12. The analysis of surface of precipitate conform the needle like structure of ettringite. This treatment technique has promising features such as, the chemicals required in the treatment as well as the sludge generated can be reduced. The operating pH range is in alkaline region which is advantageous over traditional treatment process which has lower pH. Also the co-precipitation not only helps in removal of arsenic but also heavy metals.

4논문(論文) : 댐상류 하수도시설의 통합운영관리방안에 관한 연구(1) -통합관리전문기술지원단의 운영방안에 대하여-

저자 : 박규홍 ( Kyoo Hong Park ) , 김형준 ( Hyung Joon Kim ) , 안충희 ( Choon Hee Ahn ) , 최주행 ( Joo Hang Choi )

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 25권 1호 발행 연도 : 2011 페이지 : pp. 23-29 (7 pages)

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Integrated management system (IMS) for sewerage facilities has been installed at 7 dams and 9 watersheds since 2006. However, there has been no decisive plan on how and who to manage efficiently IMS after finishing the construction. Therefore, in this study, it was suggested that a new organization, so to speak, a technical support team for integrated management that may operate and manage IMS efficiently, could need to be set up. Three scenarios were evaluated depending on the type of allocating human resources to new organization considering each levels of sewerage facilities. Economic analyses on each scenarios of human resources allocation were also carried out. As a result, establishing the technical support team for integrated management was estimated to give the net benefit from 1.3 billion to 20.6 billion won for 15 years.

5논문(論文) : 수리구조 개선을 통한 다중 펌프 흡수정에서 발생하는 보텍스 방지 대책 수립에 관한 연구

저자 : 박노석 ( No Suk Park ) , 김성수 ( Seong Su Kim ) , 김종오 ( Woo Chang Jeong ) , 정우창 ( Jong Oh Kim )

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 25권 1호 발행 연도 : 2011 페이지 : pp. 31-39 (9 pages)

다운로드

(기관인증 필요)

초록보기

In order to suggest the methodology for achieving anti-vortex device within multi pump intake well, CFD(Computational Fluid Dynamics) simulation were conducted for two alternative suggestions. Multi-intake sump model with anti-vortex device basins were designed and the characteristics of submerged vortex were investigated in the flow field by numerical simulation. From the results of simulations, to install the horizontal plate and vertical cross plates within basins were effective for preventing air-induction vortex.

6논문(論文) : 폐색 저감형 산기관의 개발 및 적용성 평가

저자 : 김영훈 ( Young Hoon Kim ) , 김관엽 ( Kwan Yeop Kim ) , 이의종 ( Eui Jong Lee ) , 남종우 ( Jong Woo Nam ) , 이창하 ( Chang Ha Lee ) , 전민정 ( Jeon Min Jung ) , 김형수 ( Hyung Soo Kim )

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 25권 1호 발행 연도 : 2011 페이지 : pp. 41-49 (9 pages)

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The diffuser which is conventionally adapted to MBR, has problem that decreasing the cleaning effect of membrane module by inflexible air supply due to the occlusion of sludge from diffuser hole. To solve this problem, diffuser structure of submerged module should be improved to discharge sludge which is flow into the diffuser for prevent occlusion in the diffuser. In this study, the structure of the diffuser was reformed to open lower part for preclusion the blocking. And the outlet diameter of the diffuser was drawn through the condition for the depth of water and air rate, to prevent air-leak condition of improved diffuser. Moreover, application is evaluated by comparing test with occlusion effect of the conventional and improved diffuser. From the results, air-water boundary changes are steady with changes of water depth and it shows linear relation about air rate. By using this linear numerical formula, the height of diffuser`s outlet can be decided. Also, it displays that it can prevent the occlusion effect during the comparing test. Hereafter, if this diffuser is applied to practical MBR process, the occlusion problem of diffuser will be disappeared.

7논문(論文) : 댐상류하수도시설의 통합운영관리방안에 관한 연구(2) -통합운영관리 조직구성, 인력절감효과 및 경제성 검토를 중심으로-

저자 : 안충희 ( Choong Hee Ahn ) , 이관용 ( Kwan Yong Lee )

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 25권 1호 발행 연도 : 2011 페이지 : pp. 51-61 (11 pages)

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A project constructing sewerage facilities in 9 upstream areas of 7 multi-purpose dams will have been completed by 2011. After all constructing and retrofitting of the new and the existing sewerage facilities, integrated management system with operation and control functions for the each levels of facilities will also be utilized. In this study, we studied how to compose the organization taking responsibility of the integrated management system and analysed human resources saving effect against conventional method of individual management of each sewerage facility. As a result, a method estimating the human resources in employing the integrated management among several sewerage facilities at upstream areas of dams were presented and some 23% of human resources could be saved by integrated management. Commissioning to a specialized public institute showed the highest B/C ratio of 4.5 among commissioning to local public corporations, commissioning to private corporations, and role-sharing partnership, etc.

8논문(論文) : Ferrate(6)를 이용한 2-chlorophenol의 분해특성 연구

저자 : 최혜민 ( Hye Min Choi ) , 권재현 ( Jae Hyun Kwon ) , 김일규 ( Il Kyu Kim )

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 25권 1호 발행 연도 : 2011 페이지 : pp. 63-74 (12 pages)

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The degradation characteristics of 2-chlorophenol(2-CP) by Ferrate(VI) were studied. The degradation efficiency of 2-CP in aqueous solution was investigated at various values of pH, Fe(VI) dosage, initial concentration and aqueous solution temperature. The maximum degradation efficiencies of 2-CP were obtained at pH 7.0 and aqueous solution temperature of 25℃. The degradation efficiency was proportional to dosage of Fe(VI). Also, the initial rate constant of 2-CP degradation increased with decreasing of the 2-CP initial concentration. In addition, the degradation pathway study for 2-CP was conducted with GC-MS analysis. Acetic acid, formic acid, benzaldehyde and benzoic acid were identified as reaction intermediates of the 2-CP degradation by Ferrate(VI).

9논문(論文) : 건기와 우기시 낙동강 유역 분류식 하수관거의 유입수/침입수의 분석

저자 : 구정은 ( Joung Eun Gu ) , 이홍신 ( Hong Shin Lee ) , 손건태 ( Gun Tae Son ) , 이성억 ( Sung Eok Lee ) , 이승환 ( Seung Hwan Lee )

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 25권 1호 발행 연도 : 2011 페이지 : pp. 75-84 (10 pages)

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This study was conducted to provide a basic information for the establishment of operation and treatment processes in sewer system of Nakdong river basin to minimize the overall pollutants loading to water body. Sewage flowrates were regularly measured and monitored at various sampling points of newly-built separate sewer system located in G City GA sites. To assess the inflow sewage flowrate, various calculating methods such as water-use evaluation, average-minimum daily flow quality evaluation, minimum daily flow evaluation, night water-use evaluation were used. Average I/Is were calculated except water-use evaluation. Average I/Is were found to be 6.5 m3/d, 3.5 m3/d, 7.7 m3/d at GA-1, GA-2, GA-3 points respectively. I/I ratios of three areas were found to be 4.8 %, 2.0 % and 2.7 % respectively and were obviously lower than those of the other separate sewer systems as shown in the previous studies.

10논문(論文) : Bacillus 미생물과 활성슬러지의 포자화에 따른 체외고분자물질 생성에 관한 연구

저자 : 이상호 ( Sang Ho Lee )

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 25권 1호 발행 연도 : 2011 페이지 : pp. 85-93 (9 pages)

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The structural components of microorganism are quite related to the toxin and environmental conditions. The vegetative and dormant cells are quite affected by the physical and chemical environments to survive and they will be dormant when they are in the extreme environment. The mechanism to activate the microorganisms however, is not well defined yet in the area of activation state and sporulation state through the analysis of EPS. Other than that even the main mechanism of prior to acquisition of analysis values is not well understood. Therefore, what kind of specific environment to affect the activation and sporulation will be discussed through the analysis of the extracellular polymeric substances(EPS). EPS are a high molecular weight mixture of polymers presenting both outside of cells and interior of microbial aggregates. They are a major complex materials in microbial aggregation for sustaining them together in a three dimensional matrix. Three commonly used extraction methods were applied to this study their effectiveness and quantification in extracting EPS from several Bacillus microorganisms and activated sludge. Three extraction methods used for this study are regular centrifugation with formaldehyde (RCF), Steaming, and EDTA extraction. The results of EPS contents such as the quantitative proteins, carbohydrates and the ratio of protein versus carbohydrate from the several species with the several specific methods showed in this research. This study aims to get comparable results of the quantitative production of EPS and the effectiveness of sedimentation for Bacillus microorganisms and activated sludge from several wastewater treatment plans. The results revealed that the protein amount extracted was the highest by the Steaming method of three extraction methods before sporulation and the carbohydrate amount extracted was the highest by the RCA method of three extraction methods after sporulation. The higher amount of protein compared with carbohydrate from Bacillus microorganisms affected higher sedimentation efficiency, however it could not be found the relation between the EPS production and sedimentation efficiency for the activated sludge.

12
주제별 간행물
간행물명 수록권호

KCI등재

상하수도학회지
34권 5호 ~ 34권 5호

KCI등재 SCOUPUS

목재공학(Journal of the Korean Wood Science and Technology)
48권 5호 ~ 48권 5호

한국목재공학 학술발표논문집(Conference Proceedings)
2019권 2호 ~ 2020권 1호

KCI등재

한국지리정보학회지
23권 3호 ~ 23권 3호

KCI등재

상하수도학회지
34권 4호 ~ 34권 4호

KCI등재 SCOUPUS

목재공학(Journal of the Korean Wood Science and Technology)
48권 4호 ~ 48권 4호

KCI등재

상하수도학회지
34권 3호 ~ 34권 3호

KCI등재

한국지리정보학회지
23권 2호 ~ 23권 2호

KCI등재 SCOUPUS

목재공학(Journal of the Korean Wood Science and Technology)
48권 3호 ~ 48권 3호

KCI등재

상하수도학회지
34권 2호 ~ 34권 2호

지반(한국지반공학회지)
36권 2호 ~ 36권 2호

KCI등재

한국지반공학회논문집
36권 3호 ~ 36권 3호

KCI등재 SCOUPUS

목재공학(Journal of the Korean Wood Science and Technology)
48권 2호 ~ 48권 2호

KCI등재

한국지리정보학회지
23권 1호 ~ 23권 1호

KCI등재

한국지반공학회논문집
36권 2호 ~ 36권 2호

KCI등재

상하수도학회지
34권 1호 ~ 34권 1호

지반(한국지반공학회지)
36권 1호 ~ 36권 1호

KCI등재

한국지반공학회논문집
35권 12호 ~ 36권 1호

한국강구조학회지
31권 6호 ~ 31권 6호

KCI등재 SCOUPUS

목재공학(Journal of the Korean Wood Science and Technology)
48권 1호 ~ 48권 1호
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