Chemical Engineering
AccountGuest Edition My Account My Che.com Log In

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

Displaying 121 - 140 of 149 stories.
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
June 1, 2007
The impact of the chemical process industries (CPI) is much farther reaching than just the products that they produce. With respect for the power of the materials they handle, the CPI must act responsibly, considering factors that can affect workers, the community and the environment. A recent visit to two of Degussa’s production facilities in the U.S. gave an inside look as to how one company...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Looking-beyond-production_3337.html
May 1, 2007
    A detailed follow up of the cations present in the wastewater of the Monsanto Europe site in Antwerp, Belgium, has led to an increased understanding of changing wastewater treatment plant performance. The chemical process industries' (CPI) other wastewater treatment plants that handle continuously changing mixtures of different manufacturing plant effluents should also consider routine...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Monitor-Cations-in-CPI-Wastewater-for-Better-Performance_3146.html
May 1, 2007
    Pure water is an essential ingredient in the manufacture of a vast amount of products in the U.S. and, of course, throughout the world. In the industry for which I work, electricity generation, high-purity water is an absolute must for feeding high-pressure steam generators. But of course, steam generation is also important in the petroleum-refining and petrochemical industries...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Microfiltration-For-CPI-Wastewater_3147.html
March 1, 2007
The rise of the salty water table in many areas of Australia is threatening a large area of agricultural land. In a two-year research, development and demonstration project, scientists have been looking for ways to solve the problem by producing fresh water as a valuable byproduct of salinity mitigation. The Renewable Energy Group of RMIT University's School of Aerospace, Mechanical and Manufacturing...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Recovering-salt-fresh-water-and-farmland-from-briny-land_3219.html
January 1, 2007
For a biological denitrification process that selectively converts ammonia into nitrogen gas, Paques B.V. (Balk, Netherlands; edlinks.che.com/6891-536) was among the winners of the EEP environmental award, which was presented at Pollutec 2006 (Lyon, France; 28 November–December 1). Developed in collaboration with Delft University of Technology and the University of Nijmegen (both Netherlands), the...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Red-microbes-make-a-meal-from-ammonia_3185.html
December 1, 2006
    For companies in the chemical process industries, water is an indispensable utility. But the growing scarcity of quality industrial water, combined with stricter environmental regulations and the rising cost of wastewater treatment, have encouraged the conservation of water as a key utility in process plants. Concurrently, the development of systematic techniques for water reduction has made...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Assess-Your-Plants-True-Water-Savings-Potential_2810.html
December 1, 2006
Researchers from Pacific Northwest National Laboratory (PNNL; Richland, Wash.; edlinks.che.com/6519-554) and their collaborators have discovered that certain microorganisms can be stimulated to bind uranium from soil when served ethanol for an hour per day. The microbes could be used to immobilize...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Immobilizing-uranium_3063.html
December 1, 2006
The mountains of used tires piling up around the world may be a source of a new filtration media that promises to be a cheaper and more efficient alternative to sand or anthracite, which are commonly used for filtering wastewater. The patented technology, developed by Yuefeng Xie, associate professor of environmental engineering at Penn State Harrisburg (Pa.; edlinks.che.com/6519-555), uses crumb rubber...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Tires-filter-wastewater_3064.html
November 1, 2006
Ostara Nutrient Recovery Technologies Inc. (Vancouver, B.C., Canada; edlinks.che.com/6518-533) has constructed the first large-scale reactor to demonstrate the struvite recovery technology first developed by the University of British Columbia (UBC). The e700,000 reactor, located at the Edmonton Gold Bar sewage treatment works, will treat approximately...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Recovering-struvite-from-sewage-sludge_3029.html
October 1, 2006
    Water is an essential resource for the chemical process industries (CPI), with steam, cooling water and process water as just a few examples of its many applications. When readily available, this essential commodity is often taken for granted. There is, however, a risk of losing the availability of classic water resources such as groundwater, river water or potable water for an industrial...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Wastewater-A-Reliable-Water-Resource_2792.html
October 1, 2006
Last month, BOC Edwards (Wilmington, Mass.; edlinks.che.com/6517-549) completed installations of its new ERIX wastewaster treatment system at the College of Nanoscale Science and Engineering, of the University of...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/HF-effluent-treatment_3022.html
October 1, 2006
Scientists from the University of Illinois at Urbana-Champaign (edlinks.che.com/6517-551) have developed a catalyst that uses hydrogen to efficiently destroy harmful perchlorate in contaminated groundwater. The catalyst is composed of palladium and rhenium supported on activated carbon. The rhenium removes an oxygen atom from the perchlorate...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Perchlorate_3024.html
September 1, 2006
Ecovation, Inc. (Victor, N.Y.; edlinks.che.com/6516-539) has constructed a waste-treatment and renewable-energy-production facility for CoolBrands International (North Lawrence, N.Y.) — a cottage-cheese and yogurt production plant that will use Ecovation’s patented Mobilized Film Technology (MFT) to biologically treat wastewater containing...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Reduce-energy-needs-by-converting-wastewater-into-biogas_3000.html
September 1, 2006
The U.S. DOE estimates that uranium contaminates more than 2,500 billion liters of groundwater nation wide; for the past 10 years, the agency has supported research into the ability of naturally-occuring microbes that can stop the underground migration...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Bacteria-may-be-a-solution-to-stop-uranium-migration-in-groundwater_3001.html
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...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/World-Water-Needs-Grow_3083.html
August 1, 2006
Dow Chemical Co. (Midland, Mich.; edlinks.che.com/6515-546) has acquired Zhejiang Omex Environmental...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Water-purification_2986.html
June 1, 2006
Battelle (Columbus, Ohio; edlinks.che.com/5830-544) has licensed the Samms technology, developed at Pacific Northwest National Laboratory (PNNL; Richland, Wash.), to Steward Environmental...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Chementator-Mercury-removal_2958.html
Pages: « Previous  1 2 3 4 5 6 [7] 8 Next »

Get more from Che.com
Get email updates in your inbox

 

Subscribe to:
Chemical Engineering Magazine

Chemical Engineering Magazine and Archives

Plant Cost Index

Join us on... Twitter LinkedIn

LinkedIn Groups

Our LinkedIn group is now over 26,000 members strong!

  1. Join other CPI professionals from all over the globe and share best practices, expertise, concerns and more.
  2. Provide feedback to Chemical Engineering Editors


Current members represent Worley Parsons, DuPont, SABIC, Fluor, Air Products, LyondellBasell, Nalco, Dow Chemical, Dow Corning, BASF, Jacobs Engineering, ExxonMobil, Shell, Chevron and more.

Join Now



We also offer the following subgroup for more targeted discussions:

Tools
Search the Buyers' Guide

Plant Cost Index

Facts at Your Fingertips (archive)

Ask the Experts

Back Issues
X
To access this area, please log in or create an account.
Username:
Password:
Forgot your password?
Request it now.
Processing...
Live chat by BoldChat