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상하수도학회지 update

Journal of the Korean Society of Water and Wastewater

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수록정보
수록범위 : 1권1호(1987)~35권5호(2021) |수록논문 수 : 2,022
상하수도학회지
35권5호(2021년 10월) 수록논문
최근 권호 논문
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KCI등재

1대한상하수도학회지 목차

저자 : 대한상하수도학회

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 35권 5호 발행 연도 : 2021 페이지 : pp. 1-2 (2 pages)

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KCI등재

2파일롯 규모의 운영에 따른 하천수질(T-P) 개선에 관한 연구

저자 : 최경수 ( Kyoungsoo Choi ) , 이채영 ( Chaeyoung Lee )

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 35권 5호 발행 연도 : 2021 페이지 : pp. 323-334 (12 pages)

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Pilot-scale coagulation and sedimentation processes were operated to investigate the T-P (Total phosphorus) removal efficiency. A multiple regression model was also derived to predict the water quality improvement effect with river water characteristics. The inflow rates for the pilot-scale facility were 157-576 ㎥/day, and the coagulant doses were in the range of 13.7-58.5 mg/L (average 38.9 mg/L) for PAC (Poly alum chloride) and 16.5-62.1 mg/L (average 36.0 mg/L) for alum. The results found that the influent BOD (Biochemical oxygen demand) and T-P concentrations were 4.9 mg/L and 0.115 mg/L, and the removal efficiencies were 52.7% and 59.4%, respectively. T-P removal efficiencies on wet weather days were higher by 10% than dry weather days because influent solids influenced T-P's coagulation process. The pH of river water was 6.9-7.8, and the average pH was 7.3. Although the pH variation was not significant, the trend showed that the treatment efficiency of T-P and PO4-P removal increased. Thus, the pH range considered in this study seems to be appropriate for the coagulation process, which is essential for phosphorous removal. The T-P removal efficiencies were 19.6-93.3% (average 59.2%) for PAC and 16.4-98.5%(average 55.9%) for alum; thus, both coagulants showed similar results. Furthermore, the average coagulant doses were similar at 42.4 mg/L for PAC and 41.3 mg/L for alum. When the T-P concentration of the effluent was compared by the [Al]/[P] ratio, the phosphorus concentration of the treated water decreased with an increasing [Al]/[P] ratio, and the lowest T-P concentration range appeared at the [Al]/[P] ratio of 10-30. A seasonal multiple regression analysis equations were derived from the relationships between 10 independent and dependent variables (T-P concentration of effluent). This study could help lake water quality maintenance, reduce eutrophication, and improve direction settings for urban planning, especially plans related to developing waterfront cities.

KCI등재

3지진 재해 대응을 위한 진동 기반 구조적 관로 상태 감시 시스템에 대한 고찰

저자 : 신동협 ( Dong-hyup Shin ) , 이정훈 ( Jeung-hoon Lee ) , 장용선 ( Yongsun Jang ) , 정동휘 ( Donghwi Jung ) , 박희등 ( Hee-deung Park ) , 안창훈 ( Chang-hoon Ahn ) , 변역근 ( Yuck-kun Byun ) , 김영준 ( Young-jun Kim )

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 35권 5호 발행 연도 : 2021 페이지 : pp. 335-349 (15 pages)

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As the frequency of seismic disasters in Korea has increased rapidly since 2016, interest in systematic maintenance and crisis response technologies for structures has been increasing. A data-based leading management system of Lifeline facilities is important for rapid disaster response. In particular, the water supply network, one of the major Lifeline facilities, must be operated by a systematic maintenance and emergency response system for stable water supply. As one of the methods for this, the importance of the structural health monitoring(SHM) technology has emerged as the recent continuous development of sensor and signal processing technology. Among the various types of SHM, because all machines generate vibration, research and application on the efficiency of a vibration-based SHM are expanding. This paper reviews a vibration-based pipeline SHM system for seismic disaster response of water supply pipelines including types of vibration sensors, the current status of vibration signal processing technology and domestic major research on structural pipeline health monitoring, additionally with application plan for existing pipeline operation system.

KCI등재

4정수처리공정 시뮬레이터 개발 기초연구

저자 : 변용훈 ( Yong-hoon Byun ) , 신휘수 ( Hwi-su Shin ) , 김호용 ( Ho-yong Kim ) , 정남정 ( Nahm-chung Jung )

발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 35권 5호 발행 연도 : 2021 페이지 : pp. 351-365 (15 pages)

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Water treatment process simulator is the tool for predicting sequential changes of water quality in a train of unit processes. This predicts the changes through governing equations that represent physicochemical performance of each unit processes with an initial and boundary conditions. Since there is no operational data for the design of a water treatment facility, there is no choice but to predict the performance of the facility by assuming initial and boundary conditions in virtual reality. Therefore, a simulator that can be applied in the design stage of a water treatment facility has no choice but to be built as a numerical analysis model of a deductive technique. In this study, we had conducted basic research on governing equations, inter-process data-flow, and simulator algorithms for the development of simulators. Lastly, this study will contribute to design engineering tool development research in the future by establishing the water treatment theory so that it can be programmed in a virtual world and suggesting a method for digital transformation of the water treatment process.

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