Developing a Model for Decision-Makers in Dynamic Modeling of Urban Water System Management

Karimlou, Keivan; Hassani, Nemat; Mehrabadi, Abdollah Rashidi; Nazari, Mohammad Reza

doi:10.1007/s11269-019-02428-z

Cited by 18 publications

(9 citation statements)

References 14 publications

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“…Increasing urbanization and climate change have increased the diversion volume of stormwater from catchments, which has affected the water quality of receiving bodies (river, lake or sea) and has resulted in more frequent sewer floods (Fletcher et al 2013;Karimlou et al 2020). The above has also deteriorated the functionality of sewer systems.…”

Section: Introductionmentioning

confidence: 99%

Relationship Between Rainfall Duration and Sewer System Performance Measures Within the Context of Uncertainty

Szeląg

Kiczko

Łagód

et al. 2021

Water Resour Manage

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Urbanization and climate change have resulted in an increase in catchment runoff, often exceeding the designed capacity of sewer systems. The decision to modernize a sewer system should be based on appropriate criteria. In engineering practice, the above is commonly achieved using a hydrodynamic model of the catchment and the simulation of various rainfall events. The article presents a methodology to analyze the effect of rainfall characteristics parametrized with intensity-duration-frequency (IDF) curves in regard to performance measures of sewerage networks (flood volume per unit impervious surface and share of overfilled manholes in the sewerage network) accounting for the model uncertainty determined via the generalized likelihood uncertainty estimation (GLUE) method. An urban catchment was modeled with the Storm Water Management Model (SWMM). Analyses showed that the model uncertainty exerts a large impact on certain measures of sewage network operation. Therefore, these measures should be analyzed in similar studies. This is very important at the stage of decision making in regard to the modernization and sustainable development of catchments. It was found that among the model parameters, the Manning roughness coefficient of sewer channels yields a key impact on the specific flood volume, while the area of impervious surfaces yields the greatest impact on the share of overflowed manholes.

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Section: Introductionmentioning

confidence: 99%

Relationship Between Rainfall Duration and Sewer System Performance Measures Within the Context of Uncertainty

Szeląg

Kiczko

Łagód

et al. 2021

Water Resour Manage

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“…Appropriate WDN management can also prove an effective means of tackling NRW issues (Bhagat et al , 2019; Hussein et al , 2017; Kamarudin and Ismail, 2016; Yi et al , 2017), with NRW an indicator of WDN performance (Kamarudin and Ismail, 2016). There are many aspects to WDN management: (1) asset management (Mugisha, 2013); (2) dynamic modeling, which is based on a method that selects the best management actions (Karimlou et al , 2020); (3) operation and maintenance, which is applied to boreholes and hand pumps within a WDN (Silombela et al , 2018); (4) record keeping (Silombela et al , 2018); (5) programs such as GIS and management information system tools, which help in decision making and WDN management (Ndirangu et al , 2013); (6) budget management and the prioritization of NRW activities (Gambe, 2015); (7) the shift from traditional top-down approaches toward bottom-up approaches in certain WDNs, which emphasizes the involvement of multiple-stakeholders (Lai et al , 2017); (8) organizations that control the activity of utilities (González-Gómez et al , 2011). The main benefits of WDN management are decreasing WL and reducing the overall NRW (González-Gómez et al , 2011; Saadr and Anuar, 2019; Silombela et al , 2018).…”

Section: Resultsmentioning

confidence: 99%

Non-revenue water reduction strategies: a systematic review

Farouk

Rahman

Romali

2021

SASBE

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PurposeSustainability involves ensuring that sufficient resources are available for current and future generations. Non-revenue water (NRW) creates a barrier to sustainability through energy and water loss. However, a comprehensive overview of NRW reduction strategies is lacking. This study reviews the existing literature to identify available strategies for reducing NRW and its components and discusses their merits.Design/methodology/approachA systematic literature review was conducted to identify and analyze different strategies for reducing NRW. The initial search identified 158 articles, with 41 of these deemed suitably relevant following further examination. Finally, 14 NRW reduction strategies were identified from the selected articles.FindingsThe identified NRW reduction strategies were grouped into strategies for reducing (1) apparent losses (AL), (2) real losses (RL) and (3) water losses, with the latter involving the combination of AL and RL. The strategies adopted most frequently are “prevent water leakage” and “control water pressure.” In addition, water distribution network (WDN) rehabilitation has additional benefits over other RL reduction strategies, including saving water and energy, increasing hydraulic performance and enhancing reliability. Finally, utilizing decision support systems is the only strategy capable of reducing multiple NRW categories.Originality/valueThis review provides insights into the overall NRW problem and the strategies best equipped to address it. Authorities can use these findings to develop case-specific NRW reduction action plans that save water and energy, while providing other economic benefits. In addition, NRW reduction can improve WDN reliability.

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“…Water supply utilities generally apply to increase their revenues using the traditional method of reducing non-revenue water (NRW) that consists of leakage reduction, meter repair, and commercial activities, which is a traditional method that is widely used by water supply providers worldwide (Dimaano 2015;Mukherjee et al 2015;Karimlou et al 2020). However, this study presents the first trial by WASA-F to increase revenue by not only reducing NRW in the traditional way but also by improving its water supply services of water pressure and supply time.…”

Section: Discussionmentioning

confidence: 99%

Revenue augmentation through improved water supply services: a case study of the SMART-WASA team of Faisalabad, Pakistan

Ogata¹,

Segawa²,

Rashid

et al. 2021

Journal of Water, Sanitation and Hygiene for Development

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The Water and Sanitation Agency of Faisalabad has tried to increase its revenue by increasing both its water demands and total number of customers. To this end, a pilot activity was implemented. Two selected pilot areas were hydraulically separated to increase water pressures within the areas. The results showed that the durations of water supply increased from 3.5 to 12 hours and from 6 to 18 hours per day in the pilot areas. The water pressure in each pilot area increased from 2 to 10 m and from 3 to 18 m, respectively. Wastewater contamination was also eliminated after increasing the water pressure. Customers were informed of these achievements through workshops, flyers, and banners on streets, which encouraged them to shift from a flat rate system to a metering system. Consequently, the total billed amounts for two pilot areas in March 2019 increased by 65.0% and 97.0%, compared with those from November 2016. The bill collection ratios also increased from 48.2% to 56.9% and from 48.1% to 60.6% during pilot activities. Improving services of water supply utilities through the formation of a water distribution area with an increase in water pressure is recommended as an effective method for revenue augmentation.

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Developing a Model for Decision-Makers in Dynamic Modeling of Urban Water System Management

Cited by 18 publications

References 14 publications

Relationship Between Rainfall Duration and Sewer System Performance Measures Within the Context of Uncertainty

Relationship Between Rainfall Duration and Sewer System Performance Measures Within the Context of Uncertainty

Non-revenue water reduction strategies: a systematic review

Revenue augmentation through improved water supply services: a case study of the SMART-WASA team of Faisalabad, Pakistan

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