waterworks Articles
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Asset management system for business management of water suppliers
Many water suppliers in Japan are required to renew aged waterworks facilities systematically in spite of the decline in revenues due to the decrease in the population. Moreover, they are needed to build waterworks facilities with high earthquake resistance. Therefore, it is necessary for water suppliers to manage waterworks effectively and efficiently in order to build sustainable ...
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Hydrogenic City 2020 Project
Water is often taken from ecologically vulnerable areas. This movie is proposing an initiative to create a network of ecologically sensitive and aestetically compelling water reclamation centres, so the waterworks infrastructure gets a public dimension as they are integrated in the local community and serve more than one purpose. Continue reading the full ...
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Effectiveness of reconstruction of water supply system from the economic viewpoint and affecting factors – case study of a city
To solve the issues of decreasing revenue of waterworks caused by population decline and increasing renewal cost caused by ageing facilities, it is necessary to strengthen the financial base of the waterworks by undertaking efficient reconstruction of water supply system, and the cost of future renewal demands and anti-seismic upgrading need to be reduced. This paper evaluates the effectiveness ...
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Construction of delicate systems to manage water distribution systems and minimize water losses: endeavors and challenges in Beijing
The rapid population growth in Beijing exacerbates the contradiction between social and economic development and water resource shortage. The provision of sufficient and safe drinking water with reasonable pressure to local residents is the primary goal for Beijing Waterworks Group. The South-to-North Water Diversion Project is valuable to alleviate the water resource crisis in Beijing; however, ...
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Smart Hydrants in Békásmegyer!
In cooperation with Budapest Waterworks, we installed 2 Smart Hydrants at their operation site in Békásmegyer. The Smart Hydrants continuously monitor the pressure of the water network, the water flow and the water intakes. Our goal is to show how success can help these devices reduce network load, save energy, reduce Non Revenue Water loss and increase network efficiency. We count ...
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Groundwater management: a search for better policy combinations
Excessive groundwater pumping is now a global concern. There is no panacea for this problem, which needs to be addressed through continual policy improvements based on case studies. Good examples of the diversity of groundwater management are demonstrated by the Tokyo (Japan) and Orange County Water District (OCWD, California, USA) experiences. In Tokyo, excessive groundwater pumping was ...
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Rural water supply (Vol. 2 of 3) : Construction supervision manual
This rural water supply design manual is the first of three related volumes prepared for the use of prospective and actual owners, operators, managements, technical staff, consultants, government planners and contractors of small level three and level two water supply systems in the Philippines. Its purpose is to introduce the key concepts and considerations involved in the design of small ...
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Rural water supply (Vol. 3 of 3) : Operation and maintenance manual
This rural water supply design manual is the first of three related volumes prepared for the use of prospective and actual owners, operators, managements, technical staff, consultants, government planners and contractors of small level three and level two water supply systems in the Philippines. Its purpose is to introduce the key concepts and considerations involved in the design of small ...
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Rural water supply (Vol. 1 of 3) : Design manual
This rural water supply design manual is the first of three related volumes prepared for the use of prospective and actual owners, operators, managements, technical staff, consultants, government planners and contractors of small level three and level two water supply systems in the Philippines. Its purpose is to introduce the key concepts and considerations involved in the design of small ...
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Prospective environmental and economic assessment for biotreatment of micropollutants in drinking water resources in Denmark
A prospective environmental life cycle assessment (LCA) and financial cost assessment is performed to the application of bioaugmentation to sand filters in Danish waterworks, to remove 2,6-dichlorobenzamide (BAM) from drinking water resources. Based on pilot-scale and laboratory-scale data, we compare bioaugmentation to current alternative strategies, namely granular activated carbon (GAC) ...
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Failure risk assessment in water network in terms of planning renewals – a case study of the exemplary water supply system
In the paper the issue of failure risk assessment in water supply system (WSS) was presented. Problems of water supply network failure constitute a crucial issue in waterworks practice. The results of the analysis were obtained on the basis of real data from water network operation. Attention has been paid to the problem of risk assessment in the context of risk acceptance criteria. An ...
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Study on failure rate analysis for water distribution pipelines
Many of the waterworks facilities in Japan were constructed during the rapid economic growth period. Today, the deterioration and renovation of these aged facilities have become a pressing issue. There are approximately 600,000 km worth of water pipelines laid out across Japan, accounting for about 70% of the nation's water-related assets (totalling ¥40 trillion). To provide water that is safe to ...
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What You Need to Know about Electronic Automation of Hydraulically-operated, Diaphragm-actuated Control Valves
Hydraulically controlled, diaphragm-actuated control valves are the mainstay of the waterworks industry to control pressure, flow, level, pump control, and at times to meter. These automatic control valves are controlled by pilots to do specific tasks and are mainly single-set-point systems. With the need to remotely actuate and control the valves and the applications becoming more complex, ...
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Removal of volatile organic sulfur compounds by aeration during algae-induced black blooms in shallow lakes
High levels of volatile organic sulfur compounds (VOSCs) have frequently been detected during algae-induced black blooms, which pose an ecological threat to water bodies and their surrounding residents. In this study, aeration was applied to remove the VOSCs after the outbreak of a black bloom. The removal efficiencies under different aeration rates (A1 (0.06 m3-air min−1 m−3), A2 (0.18 ...
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A comparison study on Acid Red 119 dye removal using two different types of waterworks sludge
This study aims to compare the performance of two waterworks sludge samples, ferric chloride sludge (FCS) and polyaluminium chloride sludge (PACS), as coagulants to remove Acid Red 119 (AR119) dye from aqueous solution. A series of batch experiments were performed to investigate the effect of initial pH, coagulant dosage and initial dye concentration on coagulation/flocculation process ...
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A long-term plan for water pipeline rehabilitation considering preventive maintenance
Water pipelines deliver water of daily-life demand to customers. However, pipelines tend to be damaged after years of use. Thus, many waterworks are now faced with the major task of water pipeline rehabilitation. However, budgets for pipeline replacement are limited. The present study aims to propose a long-term plan for water pipeline rehabilitation under limited rehabilitation budgets that ...
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Removal of arsenic from contaminated groundwater with application of iron electrodissolution, aeration and sand filtration
The results from a new water treatment system for arsenic removal are presented. The technology is based on the employment of an electrolytic iron dissolution and efficient aeration procedure prior to sand filtration. The treatment was introduced and investigated in a pilot scale plant and full scale waterworks. The pilot scale results showed the potential for efficient arsenic removal from ...
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New development of pipe-network management in Kobe City
Distribution pipelines now require a lot of maintenance and mass renewal. We need to determine measures to maintain water quality and to carry out reconstruction of the pipeline system. In addition, the mass retirement of engineers also provides us with a serious challenge on how to transfer their knowledge and skill. In 2008 Kobe City established Kobe Waterworks Vision 2017, in which plans have ...
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Protect Waterworks From Flooding with Wastop Access Case Study
Problem: Rising sea levels and extreme weather conditions are becoming increasingly common. Wherever we live on the earth, climate change affects us all. One issue that has therefore become increasingly relevant and important in recent years is to protect people and communities from flooding in waste water and surface water systems – which can have disastrous consequences. One ...
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Case study - Filtralite Fredrikstad
When renovating the filters the waterworks was interested in testing alternative filter media and replaced the anthracite layer in one of the filters with Filtralite® media for evaluation. Filtralite® is a filter media made of expanded clay and delivered by Saint-Gobain (Weber). In March 2002 Filtralite® media was installed on top of the existing sand in one out of totally 8 filters. ...
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