drinking water pipe 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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Methodology for sampling drinking water discolouration loose deposits at low velocities
The occurrence of discoloured water at the tap is one of the most frequent reasons for customers to complain. Water discolouration arises from the re-suspension of loose deposits (LD) that accumulate in drinking water pipes, due to velocity increase. Because of its typical brownish/reddish colour, discoloured water is traditionally perceived as a consequence of cast-iron pipe corrosion, even in ...
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HDPE PIPE
WHAT IS HDPE PIPE? HDPE pipe (some called poly pipe) is a kind of High-density polyethylene made plastic pipe that is widely used for fluid and gas transfer. Due to many benefits of its raw material high-density polyethylene, Polyethylene pipe is often used to replace aging concrete or steel pipelines. With its innate feature high permeability and strong molecular bond, the HDPE pipe is ...
By Tee Pipe
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It takes a village to achieve greater equality
I still vividly remember growing up in the backwaters of Kuala Lumpur, Malaysia, with no electricity or running water. My after-school routine consisted of queuing at the only drinking water supply pipe in our village, where I nudged with neighbors to collect water in containers for my family’s cooking and drinking needs. I then strapped these to the back of my bicycle and peddled my way ...
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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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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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Missing the Millennium Development Goal targets for water and sanitation in urban areas
"This paper reviews progress towards the Millennium Development Goals (MDGs) for water and sanitation in urban areas. Drawing on UN data, it shows the disastrous performance of many low- and middle-income nations in relation to the goal of halving the proportion without drinking water sources piped on premises and improved sanitation between 1990 and 2015. It also describes how even such a poor ...
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A novel freeze protection strategy for shallow buried sewer pipes: temperature modelling and field investigation
The burial of sewer and water pipes below the maximum ground frost depth can be very costly and laborious in regions with cold winters. If a freeze protection measure is applied, the utility lines can be installed in a shallower trench to reduce the excavation needs. One freeze protection measure, so called heat tracing, consists of supplying heat along the pipes. In this work, the use of 4th ...
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Water aggressiveness and hydrodynamic effects on the fibres release in asbestos-cement pipes for public water supply
SEM and TEM analyses of drinking water samples, collected during three years (1988, 1989 and 1990) from some Asbestos-Cement (A/C) distribution systems in Veneto Region (Italy), have shown that the release of fibres, with length greater than 10 μm, is, on average, quite low. Moreover, the asbestos concentration is not strictly dependent on Aggressiveness Index (A.I.) in the range ...
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The case of the flooded carpet - aggressive action to prevent mold
One of the worst sensations a homeowner can experience is the “squishy” sound and feel of walking on a flooded carpet. In most cases, a water–soaked carpet is a goner. This is especially so if the water came from a flooded stream or a massive storm. These waters carry silt, and possibly sewage from flooded septic systems or overflowing sewage treatment plants. Water that has ...
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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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Mold Control Information Series – Article #4
The Case of the Flooded Carpet – Aggressive Action to Prevent Mold One of the worst sensations a homeowner can experience is the “squishy” sound and feel of walking on a flooded carpet. In most cases, a water soaked carpet is a goner. This is especially so if the water came from a flooded stream or a massive storm. These waters carry silt and possibly sewage from flooded septic ...
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The use of life cycle assessment for evaluating the sustainability of the Amsterdam water cycle
Waternet, the water cycle company of Amsterdam and surrounding areas, uses the life cycle assessment (LCA) method to evaluate the environmental impact of investment decisions and to determine the potential reduction of direct and indirect greenhouse gas (GHG) emissions of different alternatives. This approach enables Waternet to fulfil its corporate objective to improve sustainability and to ...
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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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Nature inspires a better way to block biofilms
In many industries where equipment comes in contact with water, including those that rely on water treatment membranes, equipment fouling is a huge problem. Biofilm fouling occurs when living organisms — including bacteria, algae, and even mollusks — become attached to boat hulls, harbor structures, and other equipment. The resulting damage can be costly. Coatings and other chemical ...
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Prediction of water and wastewater networks rehabilitation based current age and material distribution
Ageing drinking water, stormwater and sewer pipe networks imply an increased degree of rehabilitation. The need for rehabilitation can be predicted using lifetime distribution functions together with current network age and material distribution. In Sweden, current age and material distribution is neither documented on a national level, nor for many water utilities on a local level. In this ...
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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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Bacterial contamination of reusable bottled drinking water in Ecuador
In northern coastal Ecuador, water is routinely sold in 20 L reusable bottles for household consumption. These bottles are filled at central treatment facilities and distributed by private water companies. Similar bottled water markets are found in countries around the world. Commercially available bottled water offers an alternative source of drinking water in locations where piped ...
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JM Eagle weathering the storm
The United States economy has been in a downward spiral for a number of years, and most business owners are feeling the pinch. Two years ago the JM Eagle plant in Sunnyside was closed down…its future was uncertain. But after months of planning and reconstructing, JM Eagle announced it was installing high density polyethylene pipe (HDPE) production lines at the Sunnyside facility. ...
By JM Eagle
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