water current Articles

  • How Seismic Use Group Classification affects your Water Storage Tank

    When purchasing a bolted steel tank or a welded steel water storage tank, one of the key criteria determining the design parameters of the tank is the Seismic Use Group (SUG) classification. The term Seismic Use Group is essentially the same as the terms Occupancy Category and Risk Category used by the International Building Code (IBC) and the ...


    By Superior Tank Co., Inc.

  • Reverse Osmosis and Nanofiltration Membrane Filtration Systems: Common Problems and How to Fix Them

    Reverse osmosis (RO) and nanofiltration (NF) are membrane filtration technologies that are designed to remove solute ions and molecules from a pretreated liquid stream. Well-designed RO/NF units are compact and demand relatively little maintenance, making them an attractive alternative to conventional treatment trains. Even despite the merits of today’s efficient RO/NF technologies, it pays ...


    By SAMCO Technologies, Inc.

  • Do you know the two most important words required to understand oil spill booming?

    Much has been written (incorrectly) about how to deploy boom in order to protect, deflect or contain oil. We have long promoted using math and science when deploying spill countermeasures not only because it works, but because it’s faster, safer, more effective and it saves time, money and impact. What we’ll focus on in this article is the where of ...


    By Elastec

  • Current Trends in Modelling Water Distribution Systems

    Untitled Document Hydraulic Modelling is emerging from the infrastructure planning offices of our water utilities, where it continues to play a vital role in optimising capital investment projects, to take a ...


    By Innovyze

  • European waters - current status and future challenges - a synthesis

    The Europe 2020 strategy is the European Union's strategy for economic growth in Europe over the next decade. This strategy envisages the development of a 'greener', more environmentally friendly economy in Europe. Sustainable water management is a critical element of this green economy because healthy and resilient ecosystems provide the services needed to sustain human well‑being and our ...

  • Assessment of current and emerging practice in corporate water reporting

    Recognizing the urgency with respect to addressing the emerging global water crisis, the UN Secretary-General, in partnership with a number of international business leaders, launched in July 2007 a new initiative – The CEO Water Mandate – under the auspices of the UN Global Compact. The initiative was developed with the understanding that the private sector, through the production of goods and ...


    By Pacific Institute

  • Current and Future Wastewater Reuse in Texas

    ABSTRACTThe reuse of treated wastewater effluent has served as a source of water supply in Texas for decades. While this has often occurred without detailed planning, the formal, planned reuse of treated wastewater effluent is increasing rapidly in the state, especially in the area around the Dallas-Fort Worth metroplex. To plan for the increased water demand, Texas has been divided into 16 ...

  • HCL System Exceeds Current Regulations

    Chemron manufactures high-quality specialty chemicals and surfactants for personal care products, industrial, institutional, oil field, mining, coatings, lubricants and water treatment. Some of the operations result in the creation of hydrochloric acid with high variable rates. As expressed by Bill Frost, of Chemron: “Chemronmaintains a strong environmental commitment, which views regulations as ...


  • Advances and current changes in cellular telemetry

    Recent advances in cellular technology are offering more efficient and reliable wireless transmission of data between remote locations and the central collection points.Wireless telephone technology has been around in various forms since the 1940’s. Stevens was the first company to introduce telephone telemetry technology for remote water monitoring with the Telemark in 1939. In 1969, Bell ...

  • Effect of alternating and direct current in an electrocoagulation process on the removal of cadmium from water

    The main objective of this study was to investigate the effects of AC and DC on the removal of cadmium from water using iron as anode and cathode. The various operating parameters on the removal efficiency of cadmium were investigated. The results showed that the optimum removal efficiency of 98.1 and 97.3% with the energy consumption of 0.734 and 1.413 kWh/kL was achieved at a current density of ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • Analysis of the current knowledge gaps in the implementation of the Water Framework Directive

    The general objective of the REBECCA project1 is to provide relevant scientific support for the implementation of the Water Framework Directive (WFD). The two specific aims of the project are, firstly, to establish links between ecological status of surface waters and physico-chemical quality elements and pressures from different sources, and, secondly, to develop and validate tools that member ...


  • Current status, problems and control strategies of water resources pollution in China

    The surface water of 10 major river systems across China has been under intermediate pollution with striking eutrophication problems in major lakes (reservoirs). More data from the Ministry of Environmental Protection of China showed that underground water in 57% of monitoring sites across Chinese cities was polluted or extremely polluted. Rural water pollution, the rising number of ...


    By IWA Publishing

  • Water infrastructure security against the current terror threat in the United States

    On May 2, 2011, the United States (U.S.) President Barack Obama announced that the U.S. forces killed Osama Bin Laden, the world's most dangerous terrorist leader that killed approximately 3000 Americans on September 11, 2011 (9/11) terror attacks.  Currently, the U.S. intelligence is in possession of valuable materials of Al Qaeda operations (Thomas, 2011).  Terrorist attack plots ...


    By IWA Publishing

  • Current pollution status of Yangtze River and controlling measures

    The concentration of Persistent Organic Pollutants in Yangtze River in China is increasing steadily, especially in the downstream, where the drainage is often discharged into the water body without any treatment. In this study, the pollution status, trend of mainstream and Three Gorges area are analysed based on the statistical data of the water quality in the past years. Results indicate that ...


    By Inderscience Publishers

  • Decentralised systems – definition and drivers in the current context

    This paper explores the current context for decentralised approaches in the provision of urban water services. It examines the recent history of decentralised systems' implementation in Australia and identifies its drivers. The drivers included addressing capacity constraints of centralised systems, mitigating the environmental impact of urban development, and increasing the resilience of ...


    By IWA Publishing

  • Alternative microbial indicators of faecal pollution: current perspective

    During the early history of various countries, epidemics of diseases such as typhoid, shigellosis, cholera and amoebiasis were common threats. It was subsequently determined that the primary source of these pathogens was sewage. The environmental bodies receives a significant amount of treated, partially treated or untreated sewage, which severely depletes the water quality of these water bodies ...


    By University of Tehran

  • Beach communications: a need for evaluation of current approaches

    Aims: Programs to notify the public about water quality at beaches are developed at the state and local levels. We sought to characterize the messages and message delivery options in use, and information about the effectiveness of these beach notification programs. Methods: A telephone survey of 37 US state, tribal and territorial and 18 county, city or local beach programs was ...


    By IWA Publishing

  • Current advances in sustainable Metalworking Fluids research

    Metalworking Fluids (MWFs) have a history of harming the environment and the health of workers, resulting in pressures to re-design them in accordance with sustainable manufacturing principles. In this paper, we review research being performed at the University of Michigan to minimise the life cycle environmental and health impacts of MWFs while simultaneously improving manufacturing performance. ...


    By Inderscience Publishers

  • Sewage of Tripoli: a review of the current situation and of the future planning

    Tripoli represents a major urban area in Lebanon with about 350,000 people in the city, which may swell by additional 100,000 when the city surrounding population is counted. It used to be a dominant agricultural region, but the last three decades witnessed a rapid development of urban construction. The goal of this paper was to present the current situation regarding the sewage disposal, ...


    By Inderscience Publishers

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