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

Displaying 101 - 120 of 146 stories.
August 15, 2008
As fuel prices continue to rise, energy management is everyone’s business Market trends suggest that the demand for energy resources will rise dramatically over the next 25 years with the global demand for all energy sources forecast to grow by 57% and the U.S. demand for all types of energy expected to increase by 31% (see Figure 1). By 2030, it is expected that 56% of the world’s energy use...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Cover-Story-Making-Energy-Efficiency-Pay_4090.html
July 15, 2008
Monitoring Our Atmosphere Please refer to the Editor’s Page, April 2008: Mr. Gerald Ondrey’s last sentence sums it up. "Ultimately, the only truly green solution is to reduce consumption — the second law of thermodynamics says so." Rep. Roscoe Bartlett (R, Md.) speaks out plain and clear regarding energy policy, but colleagues respond politically and not...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/July-2008-Letters_3999.html
June 15, 2008
At last month’s IFAT Trade Exhibition (May 5 – 9; Munich, Germany), Kemira Water (Helsingborg, Finland; edlinks.che.com/7373-542) introduced, H2S-Guard, a system that monitors, controls and protects against odor and corrosion in sewage networks. The system consists of H2S measurement devices that are placed in the sewer system to...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Chementator-Controling-corrosion-and-odor-from-sewers_3965.html
June 4, 2008
A consortium of water leaders announced the formation of The Water Policy Institute.  Chaired by former EPA administrator and New Jersey Governor Christine Todd Whitman, the Institute will address water-related issues and provide information to the public through its website.  Kathy Robb, a partner in the Resources, Regulatory and Environmental Law practice at the law firm Hunton & Williams...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Water-industry-leaders-launch-Water-Policy-Institute-to-address-current-challenges_3918.html
May 15, 2008
  FIGURE 1. In a typical system for wastewater treatment, the liquid feed is introduced at the top of the column and steam is introduced at the bottom In recent years, steam strippers have become integral parts of industrial plant operations. The goal when designing these types of columns is to have reliable operation for as long as possible. This article details the methodology used when designing...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Engineering-Practice-Designing-Steam-Stripping-Columns-for-Wastewater_3863.html
May 15, 2008
The Jiashan Yao-chuang wastewater treatment plant in China’s Zhejiang Province has successfully pilot-tested a three-stage, biologically active reactor system that reduces effluent levels to within the nation’s Class 1A standards. (The standards require < 10 mg/L for biological oxygen demand (BOD), < 5 mg/L for ammonium-nitrogen and < 15 mg/L for total-nitrogen in effluent discharges.)...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Chementator-A-Wastewater-Treatment-Plant-Passes-Pilot-Test-in-China_3875.html
April 15, 2008
A new nanomaterial which doubles as a filter and a reactor capable of destroying unwanted substances, has been developed by a team from Nanyang Technological University (NTU; Singapore; edlinks.che.com/7371-544), and the Singapore Public Utilities Board. The material consists of nanosized crystals of titanium dioxide, which can capture unwanted matter in water and can act as a catalyst under the application of...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Chementator-Nanomaterial-filters-and-recycles-water_3816.html
February 15, 2008
Hydrocarbon leaks can disrupt recirculated cooling-water systems. Here’s an outline of effects and remedies Water is often the fluid of choice for cooling systems in the chemical process industries (CPI). Recirculated cooling-water systems are used to control the temperature of process fluids, which is necessary for process control and to achieve target product yields and specifications. Hydrocarbon...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Environmental-Manager-Caring-for-Cooling-Water-Systems_3664.html
February 15, 2008
Careful control of water and steam chemistry at CPI facilities can pay off handsomely in reliable operation Sometimes lost in the hustle and bustle of production issues at chemical-process-industries (CPI) facilities is that high-purity water, and steam produced thereby, is the lifeblood of the plant. Yet, equipment failures and curtailed production due to water and steam issues can cost a company hundreds...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Cover-Story-CPI-Water-and-Steam-Chemistry_3668.html
February 15, 2008
Transfield Services Ltd. (edlinks.che.com/7369-549) and WorleyParsons Ltd. (both North Sydney, Australia; edlinks.che.com/7369-550) have been selected to construct two mobile-desalination units (MDU) for contingency use in the Brisbane River. The project is expected to provide 100-million...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Chementator-Desalination-barges-based-on-reverse-osmosis_3694.html
February 6, 2008
 Siemens has received a 5.5 million euros award to provide a wastewater-treatment system and associated piping, instrumentation and engineering to the Inegol Industrial Zone in Inegol, Turkey.  The system will...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Turkish-Wastewater-Treatment-Plant-Increases-Capacity-and-Lowers-Costs-with-Siemens-Program_3655.html
January 15, 2008
At Pollutec 2007 (Paris, France; November 27 – 30), Veolia Water Solutions & Technologies (Paris, edlinks.che.com/7368-531) introduced the next generation of its Actiflo clarifier process for potable and process water — Actiflo Turbo. Like its predecessor, the patented Actiflo Turbo process uses microsand to enhance flocculation and settling, which makes the process quicker to startup, more...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Chementator-Save-Space-Money-and-Water-with-This-New-Clarifier-Process_3612.html
December 15, 2007
Süd-Chemie Zeolites GmbH, a subsidiary of Süd-Chemie AG (Munich, Germany; edlinks.che.com/6902-539) has begun to expand its production plant for new specialty zeolites, and also construct a new wastewater processing plant, at its Bitterfeld site in Germany. The...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Chementator-New-Zeolite-Catalyst_3581.html
November 15, 2007
Last month at Weftec.07, the Annual Water Environment Federation Technical Exhibition and Conference in San Diego, Nihon Genryo Co., Ltd. (Kanagawa, Japan; edlinks.che.com/6901-534) launched for the first time to the North American market its Saito Tank, a granular water filtration system that never requires filter media replacement. Since...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Japanese-water-treatment-filter-enters-U-S-market-boasting-no-need-to-replace-granular-filter-media-ever_3502.html
November 15, 2007
The latest issues of the J. of Separation Sci. and the J. of Colloid Interface Sci. report on a new material, nanostructured silica, which can be functionalized to extract heavy metals (HMs), such as mercury, lead, cadmium and...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Extracting-HMs_3513.html
October 1, 2007
Click here for full pdf version of this article - includes all graphs, charts, tables, and author information   Wastewater may not be exactly wonderful, but it is certainly fashionable. The global market for industrial water and wastewater equipment is growing at around 20% annually, according to a recent report from market research company BCC Research (Wellesley, Mass.; www.bccresearch.com). Sales...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Wonderful-wastewater_3393.html
September 1, 2007
    Fouling is one of the most vexing problems in water-treatment systems that use membranes to remove suspended and dissolved particles. The deposition and accumulation of these substances on membrane surfaces inevitably lead to loss of performance for the membrane [1]. While there are several strategies for reducing fouling, the right solution varies with the process and type of fouling.  ...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Strategies-for-Controlling-Membrane-Fouling_3364.html
September 1, 2007
    Kermit the Frog once said, “It isn’t easy being green.” While this may be true, industry is still making the effort. Both in the U.S. and abroad, processors are not only striving to produce environmentally friendly products, but also are becoming more mindful of the impact of their operations. More often than not, cleaning up both products and processes requires the use of...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/The-Green-Revolution_3366.html
July 1, 2007
Paques B.V. (Balk, Netherlands; edlinks.che.com/6897-535) has developed a cost-effective biological process (flowsheet) for removing phosphates and nitrogen from wastewater. The first commercial installation to use the new process officially opened last month at Aviko (Steenseren, Netherlands), where it is treating 3,000 m3/d of wastewater from potato processing. The plant is owned and operated by...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/A-commercial-debut-for-a-new-process-that-removes-phosphates-and-nitrogen-from-wastewater_3286.html
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