Optimal Operation of Water Distribution Networks under Water Shortage Considering Water Quality

Solgi, Mohammad; Bozorg‐Haddad, Omid; Seifollahi-Aghmiuni, Samaneh; Ghasemi-Abiazani, Parisa; Loáiciga, Hugo A.

doi:10.1061/(asce)ps.1949-1204.0000233

Cited by 14 publications

(9 citation statements)

References 30 publications

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“…The frequency or periodicity with which water is supplied is not definite either, it is generally considered daily [29], although in extreme cases it lasts more than one day [30], and water has overall an "infrequent availability" [31]. In certain intermittent networks like Jeddah, Port-au-Prince, or Coimbatore, the adopted water distribution schedule is weekly or even monthly rather than day to day, the limitation in time is persistent but the supply times and their periodicity are diverse.…”

Section: Definition Of Intermittencymentioning

confidence: 99%

“…Some consider the system as intermittent if all the network mains are not always full of water and pressurized [34]. From the operator's point of view, IWS is practically set up through cutoffs often established via valve operations at some sectors to allow adequate pressure in other parts of the network during that time [29,33,35,36]. From the receiver's end, the definition should include the global availability of water at the outlet points.…”

Section: Definition Of Intermittencymentioning

confidence: 99%

“…In an intermittently supplied system, the hydraulic conditions associated with consumer behavior and strategic decisions result in inequitable water allocation [19,29,30,[64][65][66][67].…”

Section: Social and Political Problems Imentioning

confidence: 99%

“…These problems lead water utilities to question the relevance of installing meters for this type of supply, but their absence generates other complications such as the obligation to introduce flat-rate or roughly evaluated billing [63], and the difficulty of estimating network performance. In an intermittently supplied system, the hydraulic conditions associated with consumer behavior and strategic decisions result in inequitable water allocation [19,29,30,[64][65][66][67].…”

mentioning

confidence: 99%

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Building a Methodology for Assessing Service Quality under Intermittent Domestic Water Supply

Mokssit

Gouvello

Chazerain

et al. 2018

Water

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This document proposes a methodology for assessing the quality of water distribution service in the context of intermittent supply, based on a comparison of joint results from literature reviews and feedback from drinking water operators who had managed these networks, with standards for defining the quality of drinking water service. The paper begins by reviewing and proposing an analysis of the definition and characterization of intermittent water supply (IWS), highlighting some important findings. The diversity of approaches used to address the issue and the difficulty of defining a precise and detailed history of water supply in the affected systems broadens the spectrum of intermittency characterization and the problems it raises. The underlined results are then used to structure an evaluation framework for the water service and to develop improvement paths defined in the intermittent networks. The resulting framework highlights the means available to water stakeholders to assess their operational and management performance in achieving the improvement objectives defined by the environmental and socio-economic contexts in which the network operates. Practical examples of intermittent system management are collected from water system operators and presented for illustration purposes (Jeddah, Algiers, Port-au-Prince, Amman, Cartagena, Barranquilla, Mexico, Cancun, Saltillo, Mumbai, Delhi, Coimbatore . . .).

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Section: Definition Of Intermittencymentioning

confidence: 99%

Section: Definition Of Intermittencymentioning

confidence: 99%

“…In an intermittently supplied system, the hydraulic conditions associated with consumer behavior and strategic decisions result in inequitable water allocation [19,29,30,[64][65][66][67].…”

Section: Social and Political Problems Imentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Building a Methodology for Assessing Service Quality under Intermittent Domestic Water Supply

Mokssit

Gouvello

Chazerain

et al. 2018

Water

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“…Lieb, Rycroft and Wilkening (2016) analysed hydraulic modelling of transient flow in IWS, while Cabrera-Bejar and Tzatchkov (2009) and Shrestha (2012) focused on hydraulic modelling of network's filling and emptying process. Optimization models were developed to improve equity in supply, resiliency and mechanical reliability of water distribution networks (SOLGI et al, 2016) and to identify some optimal supply schedule (ILAYA-AYZA et al, 2016b), network design (CHANDAPILLAI; SUDHEER; SASEENDRAN, 2012) and rehabilitation scheduling (SHIRZAD; TABESH; ATAYIKIA, 2017). Some hydraulic properties as the variation of Hazen-Williams coefficient and the relation between leakages and IWS were studied by Sashikumar, Mohankumar and Sridharan (2003) and Al-Ghamdi (2011), Shirzad et al (2013) respectively.…”

Section: Introductionmentioning

confidence: 99%

A ausência de uma definição padrão para sistemas intermitentes de abastecimento de água: Panorama das definições utilizadas na literatura e pelas Agências Reguladoras Brasileiras

Nishimura¹,

Roma²

2018

REGA

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A ausência de uma definição padrão para sistemas intermitentes de abastecimento de água:Panorama das definições utilizadas na literatura e pelas Agências Reguladoras Brasileiras ABSTRACTThere are over 1 billion consumers around the world supplied by intermittent water service, whose operation is hazardous to the public health, can generate inequity in water supply, can reduce infrastructure lifetime, increases the consumers' costs and reduces efficiency of the system. The drawbacks are well-known and despite considerable negative impacts shown before such operation is carrying by several water companies. There is still a considerable gap in the literature that needs to be filled in order to identify a standard definition of intermittent water supply. This paper focus on the identification of how the literature and the Brazilian regulatory agencies are dealing with the lack of a standard definition. A procedure used was a systematic review of definition related to intermittency in the literature and a manual searching process on Brazilian regulatory agencies policies. Our analysis indicated that a missing standard definition of intermittency in water supply results in a wide variety of terms and definitions that are inefficient in the characterization of the problem and are often divergent. We recognize the need for a standard definition of intermittent water supply systems to improve the quality of water services.

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Honey‐Bee Mating Optimization

2017

Meta‐Heuristic and Evolutionary Algorithms for Engineering Optimization

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Maintenance of the software is concerned with the changes and modifications implemented to the software. It needs to be validated that the modifications has not led to the degradation in the quality of the software. Software regression testing is required to instill confidence that changes are valid. Regression testing is very expensive. It requires the optimization of regression test cases. Recently, evolutionary and metaheuristic algorithms are coming into existence as search and optimization tools. This paper proposes a regression test case optimization technique based on honey bee mating optimization and fuzzy rule base, which reduces the size of the test suite by selecting the test cases from the existing test suite. The test cases which are necessary for validating the recent changes in the software and have the ability to find the faults and cover maximum coding under testing in minimum time are selected. An algorithm is designed which takes as input the test suite containing several test cases and based on their execution time and fault coverage, reduces the number of test cases. The test suite is reduced by 50% which optimizes the overall regression testing process. The proposed algorithm reduces the test suite data by approximately 50%. Although the percentage reduction is found little bit low in comparison to existing algorithm but the overall algorithm is found efficient as it provides an authentic way of selecting test cases using fuzzy rule base.

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Optimal Operation of Water Distribution Networks under Water Shortage Considering Water Quality

Cited by 14 publications

References 30 publications

Building a Methodology for Assessing Service Quality under Intermittent Domestic Water Supply

Building a Methodology for Assessing Service Quality under Intermittent Domestic Water Supply

A ausência de uma definição padrão para sistemas intermitentes de abastecimento de água: Panorama das definições utilizadas na literatura e pelas Agências Reguladoras Brasileiras

Honey‐Bee Mating Optimization

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