• Title/Summary/Keyword: Water System Monitoring

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Strengthen the Construction of Water Resources Monitoring Ability, Support the Strictest System of Water Resources management

  • Jiang, Yun-Zhong;Yi, Wan
    • Proceedings of the Korea Water Resources Association Conference
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    • 2012.05a
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    • pp.27-33
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    • 2012
  • At present, the overall water resources monitoring ability in China is weak since there is an absence of a sound monitoring system and comprehensive monitoring information. In addition to the problem of weak management ability in monitoring, measurement and information, it can hardly meet the need of implementing the strictest management system of water resource and also restricts the practice of the system to some extent. The production states the necessity of further development of water resources monitoring ability and points out the concept of "One Country, One Account" for constructing water resources information. There is an analysis on the demand on further development of water resources monitoring ability and profound discussion about the strategies for supporting "three red-line" management.

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Remote Water Quality Warning System Using Water Fleas

  • Park Se-Hyun;Kim Eung-Soo;Park Se-Hoon
    • Journal of information and communication convergence engineering
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    • v.4 no.2
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    • pp.92-96
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    • 2006
  • Hardware for monitoring the water quality using water fleas is developed. Water flea is a frequently used biological sensor for monitoring the water quality. Water fleas quickly respond to the incoming toxic water by changing their activity when they are exposed. By measuring the activity of water fleas, the incoming toxic water is instantly detected. So far the measurement of activity of water fleas has been done with a system equipped with both a light source of LED and a light detector of photo transistor. Water flea itself is, however, sensitive to light resulting in incorrect response and the system has two inconvenient separate parts of the light source and the detector. This paper suggests a system using a CCD camera instead of a light source and a detector. The suggested system processes the image data from the CCD camera in real time without any delay. The developed system becomes a part of the remote water monitoring embedded system.

A Real Time Monitoring for Water Quality of River (수질자동모니터링시스템의 설치 현황과 전망)

  • Ryu, Jae-Kuen
    • Journal of Korean Society on Water Environment
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    • v.20 no.1
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    • pp.1-11
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    • 2004
  • Water quality is monitored at 1,837 points which are streams and sources for water supply in Karea. The monitoring carry out the measurement of 16 parameters of pH, BOD, SS, DO and so on with once a month, and of other parameters such like heavy metal with once a quarter. But most of the monitoring is carried out uncontinuously, so it is very difficult to understand exactly the changes of water quality compared with continuous monitoring. Therefore, real time monitoring system was equipped with basic parameters such as pH, temperature, DO, turbidity and electric conductivity at 25 major sources of water supply after installation of Noryangjin and Dukdo in 1974. But the systems have some problems which cannot be considered the sampling sites to represent for water quality of stream of lake, and can be caused a change of water quality by long distance from analyzer to intake pipe. Therefore, it has carefully to evaluate selection of sample sites for real time monitoring system. Also, problems on the area has been to identify which parameters are best suited to monitoring stream of lake water and the differences, of analyzing results compared with manual analyzing. This paper presents some approaches to handle such problems, namely selection of sampling site and measurable parameters, to connect with bio-monitoring system solving a Limitation of measurable parameters, The bio-monitoring system of an early alarm that is desirable to perceive a toxic material inflow into stream can be applied to continuos water quality monitoring system effectively. Also, this paper presents to build a on line system transmitting immediately from a mobile analyzer house or container to main monitoring center the results of analyzer by a telemeter.

Application of the Determination Method of Monitoring Location in Real Water Distribution System (실제 상수관망에 대한 모니터링 지점선정방법의 적용)

  • Park, Yong-Gyun;Jung, Sung-Gyun;Kwon, Hyuk-Jae
    • Journal of Korean Society of Water and Wastewater
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    • v.29 no.6
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    • pp.617-623
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    • 2015
  • In this study, determination methods of monitoring location in water distribution system were suggested and applied to real test bed. Small block of Gwangtan water distribution system is consisted of 582 pipes, 564 junctions, 1 reservoir, and 1 pump station. Small block of Ho Chi Minh water distribution system is consisted of 162 pipes, 148 junctions, and 1 reservoir. Two small block water distribution systems were analyzed by pressure contribution analysis method to determine the optimum monitoring locations. The pressure change was estimated at each junctions by the additional demand at a junction. From the results, the optimum monitoring location can be determined by rank of pressure contribution index at each junctions due to demand change at a junction.

Earthquake Observation through Groundwater Monitoring: A case of M4.9 Odaesan Earthquake (지하수 모니터링을 통한 지진 감시 가능성: 중규모(M4.9) 오대산 지진의 관측)

  • Lee, Hyun-A;Kim, Min-Hyung;Hong, Tae-Kyung;Woo, Nam-C.
    • Journal of Soil and Groundwater Environment
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    • v.16 no.3
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    • pp.38-47
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    • 2011
  • Groundwater monitoring data from the National Groundwater Monitoring Stations, a total of 320 stations, were analyzed to identify the response of water level and quality to the Odaesan earthquake (M4.9) occurred in January 2007. Among the total of eight stations responded to the earthquake, five wells showed water-level decline, and in three wells, water level rose. In terms of recovery, water levels in four stations had recovered to the original level in five days, but not in the rest four wells. The magnitude of water-level change shows weak relations to the distance between the earthquake epicenter and the groundwater monitoring station. However, the relations to the transmissivities of monitored aquifer in the station with the groundwater change were not significant. To implement the earthquake monitoring system through the groundwater monitoring network, we still need to accumulate the long-term monitoring data and geostatistically analyze those with hydrogeological and tectonic factors.

Design of a Water Quality Monitoring Network in the Nakdong River using the Genetic Algorithm (유전자 알고리즘을 이용한 낙동강 유역의 수질 측정망 설계에 관한 연구)

  • Park, Su-Young;Wang, Sookyun;Choi, Jung Hyun;Park, Seok Soon
    • Journal of Korean Society on Water Environment
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    • v.23 no.5
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    • pp.697-704
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    • 2007
  • This study proposes an integrated technique of Genetic Algorishim (GA) and Geographic Information System (GIS) for designing the water quality monitoring networks. To develop solution scheme of the integrated system, fitness functions are defined by the linear combination of five criteria which stand for the operation objectives of water quality monitoring stations. The criteria include representativeness of a river system, compliance with water quality standards, supervision of water use, surveillance of pollution sources and examination of water quality changes. The fitness level is obtained through calculations of the fitness functions and input data from GIS. To find the most appropriate parameters for the problems, the sensitivity analysis is performed for four parameters such as number of generations, population sizes, probability of crossover, and probability of mutation. Using the parameters resulted from the sensitivity analysis, the developed system proposed 110 water quality monitoring stations in the Nakdong River. This study demonstrates that the integrated technique of GA and GIS can be utilized as a decision supporting tool in optimized design for a water quality monitoring network.

Monitoring of Distribution System to Improve Tap Water Quality (수돗물 수질개선을 위한 배수관망시스템 관리 정책 - 수질모니터링을 중심으로 -)

  • Jun, Jesang;Kim, Jakyum
    • Journal of Korean Society of Water and Wastewater
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    • v.19 no.4
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    • pp.411-420
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    • 2005
  • Maintaining a good quality of drinking water produced through appropriate water treatment processes to the tap is as important as improving water quality in a water treatment plant (WTP). The quality of most tap water, however, does not have the same quality as that of the water produced in a WTP due to the contamination in the distribution system while they are delivered through pipes and water tanks. It is very important to maintain water quality in distribution system to water suppliers for consumer's health and safety. Furthermore, it is not possible to investigate the water quality of all points in the distribution system because the system has a wide area and very complex hydraulic characteristics. One economic solution to prevent water quality in distribution system from being deteriorated is monitoring several points that might have the least water quality in the distribution system. If the quality of water of the monitoring points selected by proper ways is better than the quality index of Drinking Water Quality Guidelines suggested by Korean Ministry of Environment, all other points in the distribution system would be safe to drink.

Determination of Optimal Pressure Monitoring Locations of Water Distribution Systems Using Entropy Theory and Genetic Algorithm (엔트로피 이론과 유전자 알고리즘을 결합한 상수관망의 최적 압력 계측위치 결정)

  • Chang, Dong-Eil;Ha, Keum-Ryul;Jun, Hwan-Don;Kang, Ki-Hoon
    • Journal of Korean Society of Water and Wastewater
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    • v.26 no.1
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    • pp.1-12
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    • 2012
  • The purpose of water distribution system is supplying water to users by maintaining appropriate pressure and water quality. For efficient monitoring of the water distribution system, determination of optimal locations for pressure monitoring is essential. In this study, entropy theory was applied to determine the optimal locations for pressure monitoring. The entropy which is defined as the amount of information was calculated from the pressure change due to the variation of demand reflected the abnormal conditions at nodes, and the emitter function (fire hydrant) was used to reproduce actual pressure change pattern in EPANET. The optimal combination of monitoring points for pressure detection was determined by selecting the nodes receiving maximum information from other nodes using genetic algorithm. The Ozger's and a real network were evaluated using the proposed model. From the results, it was found that the entropy theory can provide general guideline to select the locations of pressure sensors installation for optimal design and monitoring of the water distribution systems. During decision-making phase, optimal combination of monitoring points can be selected by comparing total amount of information at each point especially when there are some constraints of installation such as limitation of available budget.

Water Quality Monitoring for Corrosion Control in Waterworks System (상수도관망 시스템의 부식제어를 위한 수질모니터링)

  • Lee, Hyun-Dong;Kwak, Phill-Jae;Lee, Ji-Eun;Kim, Yeong-Kwan;Han, Myung-Ho;Park, Young-Suk
    • Journal of Korean Society of Water and Wastewater
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    • v.23 no.1
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    • pp.77-87
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    • 2009
  • In existing systems, the best method inhibiting corrosion control in water distribution systems is to reduce water corrosiveness. Water corrosion can be decreased by controlling water quality through simple water treatment in treatment plants. On this research, we study the characteristics of tab water qualities in domestic areas, assessment of corrosive water quality and the method of water quality monitoring. This review presents the method of water quality monitoring which is the most applicable. Monitoring for corrosion control in waterworks system is the most proper method; It can prevent serious accidents economically and reduce civil appeals. Surely we should assess corrosive water quality in tab water, and introduce water treatment methods to control corrosive water quality before monitoring for corrosion. According to a lot of researches, it has been proved that simple water treatments can reduce the pipe corrosion. In this review we should indicate that we do not control of the corrosive water quality due to domestic conditions, we should monitor the water quality basically. Therefore, we recognize how the existing water quality can cause problems on pipeline corrosion, how to deal with it. Then it will be possible to apply water quality monitoring for corrosion control in water distribution system. Monitoring for corrosion control can be expressed by LI index, it is already known in literatures. This review presents more simple method than existing methods than existing ones we expect to apply these methods to SCADA in the future.

Study on Integrated Monitoring System for Protecting Water Pollution (수질오염 방지를 위한 통합 모니터링 시스템에 관한 연구)

  • Yang, Jae-Soo;Kim, Yoon-Hyun;Han, Yong-Hwan;Lee, Young-Ha;Kim, Jin-Young
    • KSBB Journal
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    • v.26 no.5
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    • pp.412-416
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    • 2011
  • The conventional monitoring system for water pollution measurement is quite simple and independent and it has a lot of draw backs such as cost, installation, etc. So, in this paper, we have measured the water pollution system through a bacterial species, photobacterium phosphoreum. A novel integrated monitoring system technology has been developed which could easily dictate and analyze the major water pollutants and its surrounding environment in an accurate way. The system constitutes of bionic technology, information technology and environmental engineering technology. As a result, integrated monitoring system can observe the water pollution and various water environment of the whole country. Also, through the sensors of USN, Zigbee, RFID and middle ware, which can provide service and construct service platform, a properly standardized plan with remarkable service platform has been established through this investigation.