Archives :: Environmental, Health & Safety :: Environmental Management :: Water Treatment & Supply

Displaying 141 - 152 of 152 stories.
September 1, 2006
    The world’s increasing demand for water brings with it technological challenges as well as opportunities for the chemical process industries (CPI). Recent forecasts show that the need and opportunities for water treatment are on the rise and will continue to grow in the foreseeable future.   Globally, the market for water and wastewater equipment and services including chemicals...
August 1, 2006
Dow Chemical Co. (Midland, Mich.; has acquired Zhejiang Omex Environmental...
June 1, 2006
Battelle (Columbus, Ohio; has licensed the Samms technology, developed at Pacific Northwest National Laboratory (PNNL; Richland, Wash.), to Steward Environmental...
June 1, 2006
Researchers at the Lawrence Livermore National Laboratory (LLNL; Calif.; have constructed a membrane of carbon nanotubes (CNTs) on a silicone chip, which has the potential to reduce the...
May 1, 2006
Continuously measure chlorine in water The Model TCL (photo, upper left) is a complete system for the measurement of total chlorine in water. Comprised of a sample conditioning system, an analyzer and a sensor, this system provides continuous measurement and was designed to minimize maintenance requirements and operating costs. The sample conditioning system continuously injects a solution of acetic acid...
April 1, 2006
Vortex Corp. (Prescott, Ariz.; has been awarded a Phase Two, $750,000 Homeland Security Advanced Research Project Agency Small Business Innovation Research contract to develop chlorine-free water-purification systems for municipal water-treatment plants. With support from the University of Arizona’s Water Quality Center (Tuscon), Vortex will develop a large-scale...
March 1, 2006
    Depending on their location and on other factors, chemical-process-industries (CPI) plants obtain their process water from a diverse range of sources (see Process Water Supply — the Big Picture, Chem. Eng., May 2005, pp. 32–34.). The water from most, if not all, of these sources requires some, if not a great deal of, contaminant removal onsite in order to make the water suitable...
March 1, 2006
Next month, Mekorot, Israel National Water Company Ltd. (Tel Aviv, Israel) will start up what is claimed as the world’s first ion-exchange system for selectively removing boron from potable water. The plant, designed and constructed by Treitel Chemical Engineering Ltd. (Tel Aviv; edlinks.che.con/5827-532), will treat 6,500 m3/d of reverse-osmosis-product water at Mekorot’s brackish water...
March 1, 2006
Siemens Industrial Solutions and Services Group (Erlangen, Germany; has built, commissioned and deployed the largest mobile water filtration system in the industry. The Horizontal...
February 1, 2006
Large tracts of land that have been used for military training, especially in the U.S., are contaminated with RDX— a widely used explosive that is both toxic and carcinogenic. Although bacteria have been isolated that can biodegrade the RDX, the degredation rates are too slow, allowing the RDX to leatch...
February 1, 2006
    Groundwater, surface wa-ter, wastewater, drinking water: it’s all essentially the same stuff. Whichever stage of the water cycle you care to look at, chemical engineers are to be found — either trying to stop water from becoming polluted in the first place, or cleaning up afterwards.   Cleaning up outdoors Many water purification processes rely on naturally occurring...
January 1, 2006
A simple tank-and-siphon system for removing oil from wastewater has been launched internationally by an engineering team from the University of New South Wales (UNSW; Sydney, Australia; Called the Extended Gravity Oil Water Separator (EGOWS), it is described as an improvement on the American Petroleum Institute (API) gravity separator, in that it reduces the oil content of the...
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