drinking water pipe system Articles
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Biocorrosion in drinking water pipes
Copper is widely used in drinking water distribution systems due to its relatively low cost and favorable mechanical properties. However, copper corrosion may generate copper concentrations exceeding the thresholds prescribed by international drinking water standards. In-situ measurements performed in an actual system found that the copper mass released under flowing water conditions (pipe ...
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Comparing the microbial risks associated with household drinking water supplies used in peri-urban communities of Phnom Penh, Cambodia
Most Cambodians lack access to a safe source of drinking water. Piped distribution systems are typically limited to major urban centers in Cambodia, and the remaining population relies on a variety of surface, rain, and groundwater sources. This study examines the household water supplies available to Phnom Penh's resettled peri-urban residents through a case-study approach of two ...
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Hydrogel floc nature and biogenic constituents of drinking water discolouration deposits
Loose deposits (LD) develop and accumulate in drinking water distribution systems' (DWDS) pipes and often lead to discolouration incidents, which are a major reason for customers' complaints. In addition, LD may accumulate contaminants, while discolouration may be accompanied by degradation of the water's microbiological quality. Along with iron oxides, organic compounds ...
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Influence factors of organic compounds leaching from PE pipes and the potential toxic effects on E. coli and rat C6 glioma cell
Water quality safety is always a hot topic. Recently there has been a great increase in the use of polyethylene (PE) pipes in drinking water distribution systems in China. Some organics can leach from PE pipes into drinking water, which is undoubtedly harmful for consumers. In this study, potential organics leaching from two Chinese brands of PE pipe were investigated in order to determine ...
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Characteristics of pipe-scale in the pipes of an urban drinking water distribution system in eastern China
Pipes that carry drinking water have gradually aged. Events occurring with increasing frequency, such as substandard water quality in residential taps, red water, and black water, reveal the deterioration of the chemical stability of a drinking water distribution system (DWDS). Pipes in the DWDS serving City S, located in eastern China, were sampled to analyze the concentration and ...
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Heuristic burst detection method using flow and pressure measurements
Pipe bursts in a drinking water distribution system lead to water losses, interruption of supply, and damage to streets and houses due to the uncontrolled water flow. To minimize the negative consequences of pipe bursts, an early detection is necessary. This paper describes a heuristic burst detection method, which continuously compares measured and expected values of water demands and ...
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Evaluation of potential human health risk and investigation of drinking water quality in Isparta city center (Turkey)
Isparta city center is selected as a work area in this study because the public believes that the tap water is dirty and harmful. In this study, the city's drinking water in the distribution system and other spring waters which are used as drinking water in this region were investigated from the point of water quality and health risk assessment. Water samples were collected from major ...
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The effect of the surface-to-volume contact ratio on the biomass production potential of the pipe products in contact with drinking water
The biomass production potential (BPP) test is a semi-static test for assessment of microbial growth promoting properties of construction products in contact with drinking water (CPDW). In 2003 the test was selected for incorporation into a scheme for acceptance of CPDW in the framework of implementation of the European Construction Product Directive and Drinking Water Directive. The pass/fail ...
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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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Development of a sealing material and robot for automatic socket rehabilitation of grey cast iron pipes in drinking water supply systems
The project DeWaLoP, led by Vienna Water, aims to develop a robot that is able to apply a sealing system to repair the joint sockets of pressure operating water pipes measuring about 1 m in diameter. To do this, a modification of the sealing material for inner surface application will be developed and a complex robot system will be designed to perform various tasks, such as inspecting, cleaning ...
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Mosaic Stadium, Regina: Home to the Roughriders and IPEX Case Study
From the beginning the owner was interested in the use of thermoplastic piping systems for drain, waste, and ventilation (DWV), potable water and chilled water lines, but research needed to be done. After looking at price and installation-time comparisons with copper and steel pipe, the most cost-effective choice with the quickest install time was thermoplastic ...
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Distribution of microbial activity and specific microorganisms across sediment size fractions and pipe wall biofilm in a drinking water distribution system
The aim of our study was to identify the dominant environmental niche (pipe wall and different sediment size fractions) in the distribution system for biological activity, Aeromonas and the occurrence of several microbial groups or specific opportunistic pathogens. The pipe wall and sediment fractions of three locations in a distribution system were sampled and different microbiological ...
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A bottom-up approach of stochastic demand allocation in a hydraulic network model: a sensitivity study of model parameters
An “all pipes” hydraulic model of a drinking water distribution system was constructed with a bottom-up approach of demand allocation. This means that each individual home is represented by one demand node with its own stochastic water demand pattern. These water demand patterns were constructed with the end-use model SIMDEUM. A sensitivity test with respect to the resulting residence times was ...
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6 Factors to Consider when Selecting a Watermaker
When it comes to the critical choice of selecting a watermaker for your offshore, marine or industrial location you have very important factors to consider. 1. When your equipment breaks or needs maintenance, who will be there for you? Since an offshore watermaker is a type of mechanical equipment that pumps corrosive seawater at high pressures, it will eventually require maintenance. When your ...
By H2O Inc.
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A Wise Choice Made 30 Years Ago
In the early 1980s, decision makers in charge of the City of Vaudreuil-Dorion infrastructures had a sense of vision and made a responsible choice for the lasting benefit of the tax payers. A vision that would ensure durable infrastructures for over 30 years. The technical services, in cooperation with the public works department, decided a major shift for products to be used in potable water ...
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Harvested rainwater quality: the importance of appropriate design
This paper summarises the physicochemical and microbiological quality of water from a rainwater harvesting (RWH) system in a UK-based office building. 7 microbiological and 34 physicochemical parameters were analysed during an 8 month period. Physicochemically, harvested rainwater quality posed little health risk; most parameters showed concentrations below widely used guideline levels for ...
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6 Factors to Consider When Selecting a Watermaker
When it comes to the critical choice of selecting a watermaker for your offshore, marine or industrial location you have very important factors to consider. 1. When your equipment breaks or needs maintenance, who will be there for you? Since an offshore watermaker is a type of mechanical equipment that pumps corrosive seawater at high pressures, it will eventually require maintenance. When ...
By H2O Inc.
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Expansion joints for potable water systems
Water is vital to life. Not only do we need access to clean drinking water, we need the ability to transport it without contamination. For this reason, there are standards that were created for pumping systems to safeguard potable water as it comes into contact with different materials during transport through a piping system. The NSF/ANSI 61 Standard for Drinking Water System Components ...
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