water main gate Articles

  • Tidal Water case study

    References from WaStop International´s own patented products. WaStop solves problems in a secure and efficient way. Harwich harbour - ENGLAND Anglian Water is one of the leading providers of water and waste water services in Europe and serves the needs of around six million industrial, commercial and domestic customers. Aggressive tidal waters, silt and poor ...


    By WaStop International AB

  • Homeland Security for Drinking Water Supplies

    As it has done with other jurisdictions, Congress has recently passed legislation aimed at protecting our nation's drinking water resources. Historically, water supply protection has been a high priority, including reservoir protection, continuous monitoring, and secure and redundant facilities to ensure an uninterrupted supply of drinking water. The Clean Water Act (1972), requires pollution ...


    By AECOM

  • Water quality is key to the success of Cardiff Bay

    Water quality has been a central theme in a redevelopment project that began with the creation of the Cardiff Bay Development Corporation in April 1987. This article will examine the role that water quality has played in the remarkable transformation that has taken place in Cardiff and explain how monitoring technology has developed to the stage whereby any person, anywhere in the world, can view ...

  • Transition mode of long distance water delivery project before freezing in winter

    In order to automatically and safely control long distance water delivery projects in winter, there is a need for a reasonable and feasible transition mode to avoid the emergence of ice jam. Based on open canal hydraulics, a mathematical model of canal system operated by constant downstream depth method is developed. The principle of combining feed-forward control of discharges with feedback ...


    By IWA Publishing

  • Assessment of riverside groundwater flood risk induced by high river water levels using a numerical model and monitoring data

    Large barrages have been constructed on the main rivers in South Korea to store water and mitigate fluvial flooding damage. However, the increase in water levels behind the barrages can potentially lead to a rise in groundwater levels in the riversides. The purpose of this study was to describe the effect of a barrage on groundwater levels and to test the applicability of a numerical model to ...


    By IWA Publishing

  • Hydraulic pile breaker joins construction of Jinmen Bridge

    Taiwan's Jinmen Bridge cross-sea bridge is about 4.7 kilometers long, with a budget of about 9.1 billion yuan. The Taiwan Administration's approved plan for 1995 and the 2004 Economic Development Association agreed to the construction plan of the Golden Gate Bridge proposed by the Ministry of Communications   Now, the big and small Golden Gates need to use the traffic boat, 30 minutes, and ...

  • Challenges of Modeling a Tidal Influence Conveyance System, a Seattle, Washington Case Study

    Hydraulic modeling of a drainage basin usually involves system representation of a network that flows either by gravity downhill or a force main via an outfall to a receiving water body or a treatment plant. And calibration of such a system is usually straight forward. Occasionally, engineers encounter a “City of New Orleans” type of conveyance system, where most of the storm drain network is ...

  • Hydraulic pile breaker joins construction of Jinmen Bridge

    Taiwan's Jinmen Bridge cross-sea bridge is about 4.7 kilometers long, with a budget of about 9.1 billion yuan. The Taiwan Administration's approved plan for 1995 and the 2004 Economic Development Association agreed to the construction plan of the Golden Gate Bridge proposed by the Ministry of Communications.   Now, the big and small Golden Gates need to use the traffic boat, 30 minutes, and ...


    By lydite trading company

  • Case study - City of Rockville - Robotic Pipeline Inspection

    Service: PureRobotics - Robotic Pipeline Inspection Client: City of Rockville Project Date: July 2010 Type of Pipeline: Water Transmission Main Diameter: 24-inch Pipe Material: PCCP Length: 53,000 feet Results: 3 pipe sections identified at risk Insertion of Pipeline Inspection Robot Pure Technologies (Pure) was contracted to provide robotic pipeline inspection ...

  • Development of a Passive Operating Scheme for a CSO Capture Tunnel

    ABSTRACTThe Upper Rouge Tunnel (URT) is a proposed seven mile long CSO capture tunnel within the Detroit Water and Sewerage Department (DWSD) combined sewer system that will be filled at drop shafts along its length. During filling, surge waves will result that, if left uncontrolled, could damage structures. Surge control facilities will depend on the operational scheme selected and will be ...

  • In-pipe monitors turn dreams into reality

    In-pipe monitors turn dreams into reality The quality of tap water has improved enormously in recent decades, but for largely technological reasons, until recently, knowledge of water quality between the treatment works and the tap has been an almost impossible dream for water treatment and distribution network managers. In this article, Jo Cooper, Product Specialist at Intellitect Water, will ...


    By Intellitect Water Ltd

  • Dewatering of Boiler Ash - Case Study

    Ten Gate develops and produces materials that function to increase performance, reduce costs, and deliver measurable results by working with our customers to provide advanced solutions. THE PROJECT The Wheelabrator Technology Group provides design/build and operation of trash-to-energy facilities. The Wheelabrator facility located in Lisbon, CT utilizes a storage tank for ...

  • Healthy Control Valves

    A simple maintenance routine can help ensure trouble-free valve operation. Whether the control valve in your system is the first one that has required maintenance or if you are experienced with maintaining multiple valves in your system, some simple guidelines can help keep them operating at optimal performance. Physically checking all valves at least every 12 weeks is important, assuming that ...


    By Singer Valve Inc.

  • The case for automatic weirs

    With hosepipe bans returning to parts of the country this summer, it’s easy to forget the disastrous floods of recent years – unless, of course, you were personally affected. This year’s harsh winter and modest levels of spring and summer rainfall belie a growing trend of more extreme weather events hitting the UK and a pattern of warmer winters and wetter summers. As we saw ...


    By Kijlstra Precast Ltd.

  • Downtown Shall Not Flood Again

    ABSTRACTThe City of Richmond, Virginia conducted a study to evaluate local drainage system in its downtown business district to remedy conditions that cause flooding more than once in a twoyear period. The main goals of this study are to evaluate the capacity of the storm water collection system in the downtown area to handle the 2-year storm event, identify system constraints and provide ...

  • Foundries Industry - Pollution Prevention Guidelines

    Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum ...


    By The World Bank

  • River weir upgrade illustrates Rotork’s extended scope capabilities - Case Study

    Overview Rotork is well known for supplying flow control equipment for new and upgraded industrial plants and processes on a global scale. In these contracts, often involving tens or hundreds of valve actuators and associated control equipment, Rotork works with valvemakers, engineering companies and end users as one of several members of a project team, each with different areas of ...


    By Rotork plc

  • Replacement Fill Control Valves with Electronic Flow and Metering Improve Pressure, Stop Leakage and Prevent Valve Failures

    The City of Modesto, California is situated 90 miles east of San Francisco and has approximately 200,000 residents relying on 200,000 of gallons of water a day. The City needed to upgrade three water storage tanks that hold approximately 750,000 gallons each. After years of using motor operated valves to fill water storage tanks, the city recognized that there were just too many problems. ...


    By Singer Valve Inc.

  • Assessment of the Environmental Impact of Military Activities During the Yugoslavia Conflict

    1. Executive Summary Assessment Method:The study was carried out over a period of ten days by a team of expert staff from the Regional Environment Center for Central and Eastern Europe (REC) and other contracted country experts. A framework was prepared by REC headquarters and the REC's country offices in the five selected countries gathered information and data. Additional ...

  • Should your company be conducting life cycle analyses?

    Many companies have already answered yes to that question – for a combination of reasons typically related to stakeholder interest, key customer demands, public perception, and competitive positioning.  In fact, life cycle analysis (LCA) has increasingly become an important tool in mature corporate sustainability programs, providing organizations with a consistent methodology for ...


    By Trinity Consultants

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