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  • Volume 25, Issue 10
  • Volume 25, Issue 10

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    Energy Management

    Back To Basics Part II – Impact Of Impeller Trim On Pump Efficiency

    Oct. 6, 2009
    I recently received a basic question about which is more efficient, to throttle a valve or to trim an impeller on a centrifugal pump application.
    Energy Management

    Control System Design Helps Minimize Overflows, Maximize Reliability

    Oct. 1, 2009
    Many sewer system overflows and distribution systems outages are the result of problems with pump station controls and electrical systems.
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    Home

    Hybrid AMR/AMI System Opens New Possibilities for Keys

    Oct. 1, 2009
    With a customer base of 46,000 accounts spread across a span of 130 miles, the Florida Keys Aqueduct Authority (FKAA) sought a more flexible, more efficient way to capture meter...
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    Home

    Shaft Grounding Helps Protect Variable Frequency Drives

    Oct. 1, 2009
    With the rising cost of energy, the use of variable frequency drives is growing. By optimizing electrical flow to an alternating-current (AC) motor, a VFD can provide substantial...
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    Energy Management

    Demand Response Program Reaps Environmental, Financial Rewards

    Oct. 1, 2009
    United Water Conservation District (UWCD), a water treatment facility and supplier in Santa Paula, CA, has been involved in electric power demand response programs through Southern...
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    Home

    Video Transmission Using Cellular Gateways

    Oct. 1, 2009
    In a modern water or wastewater control system with high speed networks, video surveillance for security, control and automation purposes can use the existing plant network to...

    More content from Volume 25, Issue 10

    Potable Water Quality

    NRDC Report Warns of Pesticide Contamination in Drinking Water

    Oct. 1, 2009
    The Natural Resources Defense Council said that 33 million Americans have been drinking water containing the pesticide atrazine.
    Potable Water Quality

    Engineer, Water Reuse Facility, Receive Awards

    Oct. 1, 2009
    CH2M HILL Vice President Linda Macpherson was named a WateReuse Person of the Year by the WateReuse Association and the Clovis Water Reuse Facility, designed, built and operated...
    Asset Management

    Firm Helps San Diego Convert Storm Drain Drawings

    Oct. 1, 2009
    The engineering and consulting firm MWH has converted thousands of storm drain-related drawings into San Diego's geographic information system (GIS), alleviating a backlog of ...
    Drinking Water

    Storm drainage project certified to receive $53 million loan

    Oct. 1, 2009
    The Board of Directors of the Border Environment Cooperation Commission and the North American Development Bank (NADB) has approved the certification of a storm water project ...
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    Drinking Water

    WaterWorld Website Evolves in the Digital Age

    Oct. 1, 2009
    I'm a fairly traditional print journalist, having grown up in a world of paper and ink, but I do spend a fair portion of my day on the Internet and understand the growing importance...
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    Potable Water Quality

    Data Management System Helps Track Instrument Calibration

    Oct. 1, 2009
    In 2008, a large water utility in South Carolina purchased the Hach Water Information Management Solution™ (Hach WIMS™), a commercial-off-the-shelf data management tool widely...
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    Distribution

    Product Showcase

    Oct. 1, 2009
    The 400plus series of ozone monitors is the newest addition to the WEDECO product portfolio from ITT Water & Wastewater.
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    Treatment

    New Literature

    Oct. 1, 2009
    Spiroflow has published a four-page brochure describing various after-sale services including the company's customer service, spare parts turnaround and sales support program....
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    Infrastructure Funding

    Products & Services: Pumps

    Oct. 1, 2009
    The BakerCorp Sound Attenuated Pump can be used in areas where noise is a factor, operating at 67 dBA. Ranging in size from 4" to 8" and able to handle solids up to 3" in diameter...
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    Distribution

    Products & Services: Pipe Tools

    Oct. 1, 2009
    The new 3M Dynatel Locators 2500 Series provides more active and passive frequencies, higher power and a new trace view mode.