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

Displaying 101 - 120 of 150 stories.
October 15, 2008
As regulatory issues, environmental sensitivity, and longterm water supply concerns increase, the chemical process industries (CPI) are considering ways to reduce their water discharges. In fact, more and more companies are evaluating the viability of zero-liquid-discharge (ZLD) processes. This usually involves consideration of evaporation and crystallization technologies, which can be very expensive from...
http://www.chemengonline.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Strategies-to-Minimize-Wastewater-Discharge_4243.html
October 13, 2008
Mubadala Development Co. (Mubadala; www.mubadala.ae) and Veolia Water (www.veoliawater.com) have announced their intention to create a joint-venture company that will focus on water production and...
http://www.chemengonline.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Veolia-Water-and-Mubadala-launch-a-joint-venture-company_4271.html
October 6, 2008
Siemens (Erlangen, Germany; www.siemens.com/industry) announced the acquisition of the German company SG Wasseraufbereitung und Regenerierstation GmbH (SG Water). The Hamburg-based supplier specializes in water treatment solutions for laboratories and industrial organizations. SG Water’s electro-deionization systems and reverse osmosis technology for...
http://www.chemengonline.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Siemens-takes-over-Hamburg-based-SG-Wasseraufbereitung-und-Regenerierstation_4263.html
September 15, 2008
The need to conserve water is becoming a common concern throughout the world. Whether this is due to the cost of water, availability of water, or environmental concerns, water conservation is becoming a major focal point, both in the public and private sector. In those areas where renewable water resources are limited, and in regions where there are significant environmental concerns and costs associated...
http://www.chemengonline.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Feature-Report-Water-Reuse-and-Conservation-in-the-CPI_4171.html
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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Extracting-HMs_3513.html
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