drinking water network Articles
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Failure mechanisms and condition assessment of PVC push-fit joints in drinking water networks
This paper presents and discusses the significant role played by joints in the failures registered in drinking water distribution networks. The three most important failure mechanisms related are presented and a procedure to detect them through the visual measurement of the gap between pipes inside a joint is proposed. The procedure is proved to be a valuable source of information on joint ...
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Fungi in biofilms of a drinking water network: occurrence, diversity and mycotoxins approach
Results showed that 75% of the analyzed samples in a drinking water network were positive for fungi, in a range of 1–3,000 CFU/mL. Identification resulted in nine species of fungi and four species of yeasts being listed: Bjerkandera, Penicillium, Paraconiothyrium, Paecilomyces, Debaryomyces, Rhodotorula and Cryptococcus. Although yeasts showed higher traceability than filamentous fungi, the ...
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Data analytics methodology for monitoring quality sensors and events in the Barcelona drinking water network
Water quality management is a key area to guarantee drinking water safety to users. This task is based on disinfection techniques, such as chlorination, applied to the drinking water network to prevent the growth of microorganisms present in the water. The continuous monitoring of water quality parameters is fundamental to assess the sanitary conditions of the drinking water and to detect ...
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Water Quality Monitoring by Thamnotoxkit FTM including Cyanobacterial Blooms
Abstract: The Thamnotoxkit FTM was evaluated for detecting cyanobacterial toxins as they may be hazardous to human health if they reach drinking water networks or if people are exposed through recreational activity. This test kit is a 24-hour biosassay using larvae of the freshwater anostracan crustaceanThamnocephalus platyurus hatched from cysts. Nine freeze-driedMicrocystis aeruginosa samples ...
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Short-term demand forecast using a bank of neural network models trained using genetic algorithms for the optimal management of drinking water networks
Efficient management of a drinking water network reduces the economic costs related to water production and transport (pumping). Model predictive control (MPC) is nowadays a quite well-accepted approach for the efficient management of the water networks because it allows formulating the control problem in terms of the optimization of the economic costs. Therefore, short-term forecasts are a ...
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Experience return Pegasus NC – Case Study
SIE Renom Chalaronne wanted to reduce losses in drinking water and increase its network performance, a goal which became increasingly critical in light of the Grenelle II Law. This law stipulates that network yield must be greater than 85% in urban areas and between 65% and 85% in rural areas. SIE Renom Chalaronne was able to use a combination of Hydreka products to optimize the pressure in ...
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Permanet F Detects Leaks in Trévoux - Case study
The city of Trévoux in eastern France has used Hydreka’s PermaNet F to detect leaks in their drinking water network, leading to a 20% decrease in minimum night flow after repairing fewer than half of the detected leaks. 20 PermaNet F with roaming SIM cards, and leak noise sensors with Magpot antenna were installed at key points throughout the network to monitor ...
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Chalaron Renewal Water saves 150,000 L drinking water per day by modulating pressure on its network - Case study
SIE Renom Chalaronne wanted to reduce losses in drinking water and increase its network performance, a goal which became increasingly critical in light of the Grenelle II Law. This law stipulates that network yield must be greater than 85% in urban areas and between 65% and 85% in rural areas. SIE Renom Chalaronne was able to use a combination of Hydreka products to optimize ...
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Introducing pressure and number of connections into water loss indicators for French drinking water supply networks
In France, the system of performance indicators defined within the relevant regulations does not include indicators relating to pressure, or the number of connections. So, Irstea and Veolia Water decided to create a new system of water loss indicators designed for use in France and that would take into account these parameters. The study was initially carried out at District Metered Area (DMA) ...
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Adenovirus, MS2 and PhiX174 interactions with drinking water biofilms developed on PVC, cement and cast iron
Biofilms colonizing pipe surfaces of drinking water distribution systems could provide habitat and shelter for pathogenic viruses present in the water phase. This study aims (i) to develop a method to detect viral particles present in a drinking water biofilm and (ii) to study viral interactions with drinking water biofilms. A pilot scale system was used to develop drinking water biofilms on 3 ...
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Strategies for reducing water losses with the example of Peru - Case Study
Water shortage in Peru At first glance a water shortage in Peru seems absurd: The landscape of this South American country is characterised by wide rivers, lush rain forests, varied vegetation and sizeable glaciers. As we see it, this means: water in abundance. So what is a company like Sewerin, which is in the business of tracking down leaks in water pipes, doing in Peru? A ...
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Millennium Water Supply and Sanitation Program (PEPAM) Project - Senegal - Case Study
Customer / Type of customer Sade Senegal Issue / Need Promote sustainable integrated water resource management, universal access to drinking water and continuity of public service in rural areas. This unique Senegalese development framework (PEPAM) is based on the combined efforts of the State, civil society, local authorities, NGOs, the private sector and development partners. In order to ...
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Impact of weather conditions on pipe failure: a statistical analysis
The occurrence of pipe failures in drinking water distribution networks may be influenced by weather conditions. In this work, a statistical analysis is performed to study the correlations between weather parameters and pipe failure in the Netherlands with the ultimate aim to predict the effects of climate change on network integrity. Failure data from a Dutch national failure database were ...
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Contamination accidents in China's drinking water distribution networks: status and countermeasures
In recent years, frequent urban drinking water contamination accidents have caused significant impacts on society in China. However, emergency measures are primarily realized as management policies lack systematic technologies especially for those within-network contamination accidents. The aim of this paper is to perform analysis on cases of contaminant accidents that occurred in water ...
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Reconciling ‘actual’ risk with ‘perceived’ risk for distributed water quality: a QFD-based approach
This paper explores the application of the quality function deployment (QFD) approach to identify and prioritize factors to reconcile ‘actual’ risk with ‘perceived’ risk for drinking water in a distribution network. Consumers' complaints (regarding water odour, taste, colour and other problems) and consumers' perception about water safety are used to define customers' requirements (aka ‘whats’). ...
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Decontamination of a drinking water pipeline system contaminated with adenovirus and
Escherichia coli utilizing peracetic acid and chlorineA contaminated drinking water distribution network can be responsible for major outbreaks of infections. In this study, two chemical decontaminants, peracetic acid (PAA) and chlorine, were used to test how a laboratory-scale pipeline system can be cleaned after simultaneous contamination with human adenovirus 40 (AdV40) and Escherichia coli. In addition, the effect of the decontaminants on ...
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Effect of sodium hypochlorite on typical biofilms formed in drinking water distribution systems
Human health and biological safety problems resulting from urban drinking water pipe network biofilms pollution have attracted wide concern. Despite the inclusion of residual chlorine in drinking water distribution systems supplies, the bacterium is a recalcitrant human pathogen capable of forming biofilms on pipe walls and causing health risks. Typical drinking water bacterial biofilms and ...
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The determinants of two-dimensional service quality in the drinking water sector – evidence from Colombia
Quality of drinking water service is considered in two dimensions: tangibles (measured by sediment, taste, smell, and color) and reliability (measured by service continuity). Using a large and unique household-level dataset, we study important factors that are related to these dimensions in the Colombian drinking water sector. Based on the network design of pumping, purification, and ...
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Águas de Malanje underpins its financial sustainability with a cost-to-income ratio of 115% - Case study
The Angolan water utility Águas de Malanje streamlined supply efficiency and strengthened its financial viability thanks to a new organizational model. The project combined technical assistance with improvements in billing and collection services to implement the necessary operating procedures. Challenges of the project Águas de Malanje’s objective was to improve the ...
By Idrica
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Policy recommendation for drinking water supply cross-border networking in the Adriatic region
Cross-border water resources and drinking water supply management are among the basic concerns for almost all Adriatic Sea countries. Adopting measures such as developing common methodologies, tools and techniques addressing water quality and quantity issues, water losses and pricing policies is a top priority. Regarding the harmonization of procedures and legislative framework, the ...
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