Best Management Practices for Water Loss Control in Seoul

Choi, Young-Pil; Ahn, Jae-Chan; Im, H.T.; Koo, Ami

doi:10.1016/j.proeng.2014.11.460

Cited by 7 publications

(3 citation statements)

References 2 publications

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“…The water pressure within the DWSDN depends on the pipeline codes, reservoir and all other pipeline levels along with the maximum water supply level and water consumptions (Choi et al 2014). Pressure management (Adedeji et al 2018;Fontana et al 2018) depends on the water pressure measurements in those indicated areas (Samir et al 2017;Rizzo et al n.d.).…”

Section: Pressure Management and The Realization Of The District Metered Areamentioning

confidence: 99%

The strategic development for water loss prevention

Kılıç

2021

Appl Water Sci

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The population growth and urbanization have gained importance in the Water Resource Management (WRM) works. The classic approach in relation to the development of the water resources has lost its sustainability. Water has, therefore, become an important, but also becoming a scarce natural source due to the global warming and its climate change impacts end results. The major aim of WRM is to increase the Water Distribution Network (WDN) to keep water supply sustenance by decreasing the water demand. The new approaches in relation to the WRM should take into consideration in a more refined manner the supply–demand balance with the improvements in the WDN. Recently, water resources performance improvements have become one of the significant investment topics in Turkey. However, data from the Turkish Statistical Institute and any academic research in this field have shown that there is a water loss of around 50% in the current water supply and distribution systems. In comparison to other developed countries, this loss is very high. It became, therefore, necessary that each Water Resources Administration should keep track on the costs, water leakage losses and the necessary technological investments. In the scope of this study, water loss levels reduction strategy possibilities are developed in the Sakarya City WDM system, Turkey. These strategies field applications have been presented in detail. Finally, the extent of accuracy in these strategies has been shown, which may provide guidance for other water administrations departments in the world.

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Section: Pressure Management and The Realization Of The District Metered Areamentioning

confidence: 99%

The strategic development for water loss prevention

Kılıç

2021

Appl Water Sci

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“…The water supplied is divided into revenue water flow and Non-revenue water flow. In Seoul, the NRW ratio has been growing gradually because of the construction of water storage tanks and the replacement of aging pipes [2]. The NRW ratios of cities in the world, including Seoul, range from 5 to 50%, exhibiting large differences between countries and regions [3], [4].…”

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confidence: 99%

Central Prediction System for Time Series Comparison and Analysis of Water Usage Data

Jung

2020

IEEE Access

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Revenue water flow is defined as the amount of water for which the water rate has been collected, against tap water production, whereas non-revenue water (NRW) is defined as water that has been produced, but for which payment cannot be charged. In South Korea, there are big differences in NRW among the regions, and the NRW ratio in urban areas is higher than in rural regions. To reduce regional differences and effectively manage the water system, a management system to lower the NRW ratio is required. In particular, the NRW ratio can be reduced through an automatic leakage detection and sensor-error automatic checking system for feed water pipes and piping in household, and through leakage detection of water supply and drainage pipes that transport large volumes of water. Therefore, this study develops a system that can generate automatic alarms whenever abnormal usage is predicted via analysis of household water flow rate. Linear regression, ARIMA model, and additive regression model are compared to find the best method with high accuracy. The proposed method can support efficient water system management to lower the NRW ratio.INDEX TERMS Non-revenue water, time series, ARIMA, additive regression model, water leakage alert system. I. INTRODUCTIONAccording to the waterworks statistics of South Korea, published in 2019, the sector with the highest water consumption, as of 2017, is the household sector, which accounts for 3,451 million m 2 , or approximately 62%, of the total water consumption. The next highest consumer of water is the general business sector, at 1,606 million m 2 , or approximately 29%, of the total. Other water consumers include public service, at 136 million m 2 , or approximately 2% of the total, and other industries, for the remaining 7%. Thus, water usage for everyday living accounts for the largest share of water consumption, and that consumption amount has been exhibiting an increasing trend [1].In the system of the Korea Water Resources Corporation, raw water is purified after being collected, filtered, and sterilized through the intake and mixing process at the intake station. Afterward, the processed water is fed to water tanks, and a stable supply is provided to each household.The associate editor coordinating the review of this manuscript and approving it for publication was Honghao Gao .

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“…A setorização ou District Metered Areas (DMA), instalação de medidores de vazão na rede de distribuição, instalação de válvulas de redução de pressão e uso de equipamentos de detecção de vazamentos são apresentados na literatura como eficientes processos no controle e redução de perdas reais (FANNER, et al, 2007;KALINKOV, et al, 2011;CHARALAMBOUS, et al, 2014;CHOI, et al, 2014;GONELAS, 2014;KANG, 2014;SALDARRIAGA;SALCEDO, 2015). Berardi et al 2014 2014, o controle de vazamentos de água nos sistemas de distribuição é uma valiosa ação para preservar os recursos hídricos, principalmente no atual quadro de escassez hídrica e mudanças climáticas, sendo essencial para o desenvolvimento urbano sustentável.…”

Section: Controle De Perdas Físicas Ou Reaisunclassified

<i>Benchmarking</i> aplicado ao controle das perdas de água no contexto das bacias hidrográficas Piracicaba, Capivari e Jundiaí

Santi¹

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SANTI, Aline Doria. Benchmarking for water loss control in the context of Piracicaba, Capivari and Jundiaí watersheds. Dissertation submitted to the School of Engineering of São Carlos, University of Sao Paulo, to obtain the title of Master of Post-Graduation Program in Environmental Engineering Sciences. 170 p. 2018. The water loss in supply system have presented as one of the biggest challenges of water companies around the world. In the last 12 years the water loss levels in Brazilian's distribution systems have remained close to 40%, level higher than other areas in the globe. Face of the water crisis and increasing water demand, the actions to control the water loss require attention. In the national context, the Piracicaba, Capivari and Jundiai river basins have focus by the Committees efforts that have been acting along with the cities to control the water loss levels in the area. The critical situation of water availability in the river basins, the reduction potential on hydric resources and the financial gain, if the water loss levels have lowered, enhance the urgency to adopt efficient control practices of water loss. Accordingly, the present research has searched to identify, in the context of PCJ river basins water companies, which water loss control practices are associated with the higher performance, measuring the city's water loss levels and exploiting which control practices have applied by the water companies. The first methodological step was the application of the benchmarking technique to measure the performance in water loss control, including indicator choice, questionnaire formulation of operational data, online data collection, data reliability analysis and determination of cities water loss levels, with ranking of this. The second step had directed to the gathering and analysis of control practices adopted by the companies in the area, by applying the practices questionnaire, elaborated as of bibliographic review, in loco. In the third step, using statistic tools, the control practices had crossed with the performance in water loss control, higher and lower, identifying which practices have associated with the companies' performance. The final sample analyzed included 41 cities, of the 70 PCJ Committees members, that data had fit in the reliability levels established for performance comparison purposes. The benchmarking application had enabled to analyze the companies' performance comparing the water loss levels and identifying which cities need urgent attention in control practices. Testes of means comparison had emphasized that there are significant differences in the water loss levels when deemed the city size, company's legal nature and presence of slumbs. The control practices analysis had indicated the company's efforts to control the water loss, focusing in network exchange, district meters' areas, macromediation system, been checked significant differences in the water loss average index when a practice is adopting or not. The association and correspondence analysis had indicated...

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Best Management Practices for Water Loss Control in Seoul

Cited by 7 publications

References 2 publications

The strategic development for water loss prevention

The strategic development for water loss prevention

Central Prediction System for Time Series Comparison and Analysis of Water Usage Data

<i>Benchmarking</i> aplicado ao controle das perdas de água no contexto das bacias hidrográficas Piracicaba, Capivari e Jundiaí

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