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

Displaying 1 - 20 of 149 stories.
August 1, 2014
Historically, many large industrial facilities, including power plants, have relied on once-through cooling, in which the entire cooling water volume flows through the plant heat exchangers and then is discharged to the original source. However, the U.S. Environmental Protection Agency (EPA; Washington, D.C.) has, for over a decade, been developing regulations to protect aquatic life from impingement and...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Cooling-Towers-Managing-Tighter-Water-Discharge-Regulations_12030.html
July 1, 2014
Water scarcity is one of the most serious global challenges of our time. Desalination and water reuse are effective and reliable means to provide new water resources. Among the many methods available to treat water, reverse osmosis (RO) has widely demonstrated superior reliability and cost-effectiveness at removing dissolved species, such as salts and trace contaminants. This article reviews the...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/A-Primer-on-Reverse-Osmosis-Technology_11917.html
June 1, 2014
With the C-XI decanter series, sewage treatment plants can achieve higher dry-substance values, saving money on disposal and further processing, says the company. The new decanters are...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/A-new-decanter-series-for-sludge-dewatering_11815.html
April 1, 2014
The world’s largest environmental technology trade show, IFAT (www.ifat.de), takes place in Munich May 5–9. A record of nearly 3,000 companies from 50 countries are presenting innovations and services in water, sewage, waste and raw materials management, covering some 230,000 m2 of exhibition space. What follows is a small sample of new products being exhibited at the show.   Bürkert...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/IFAT-2014-Show-Preview_11617.html
February 1, 2014
The new software package, Ocean, can contribute to turning a sewage treatment plant from a disposal facility into an opportunity to generate electricity, recover resources and recycle water. For example, Ocean can identify...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Software-helps-turn-sewage-into-profit_11429.html
November 1, 2013
Remox — the latest addition to this company’s Aquamove fleet of mobile water treatment solutions — is a membrane degasser that removes carbon dioxide and oxygen from water...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/The-launch-of-the-first-mobile-membrane-degasser_11166.html
October 1, 2013
Chemical, pharmaceutical and related industries produce large amounts of wastewater in their production and cleaning processes. The wastewater characteristics are often diverse, and may include minimally biodegradable or toxic substances, or both. To protect the environment, these wastewaters typically must be treated to minimize pollutant concentrations before discharging to the environment, or to...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Biological-Wastewater-Treatment-Selecting-the-Process_11067.html
September 1, 2013
This company’s Bio-Cell sheet, which makes up the core of its Bio-Cell MBR (membrane bioreactor) module, has a self-healing mechanism. Due to its sandwich-like and self-supporting structure...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/These-MBR-membranes-are-self-healing_10931.html
August 1, 2013
The pending water shortage I thank you for the exciting editorial titled The pending water shortage in CE, June 2013 [p. 5]. I fully agree with you that voluntary efforts are needed immediately to do everything possible to drastically bring down the water intensity of present industrial operations. Taking note of your points, we are [working] on serious efforts in engaging with India’s chemical...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/August-Letters_10773.html
July 1, 2013
Scaling, fouling and corrosion have long been the enemy of cooling-tower water. While these issues still present significant water-treatment hurdles, today’s processors are also dealing with “impaired” water streams and increasing restrictions affecting intake and discharge water, among other challenges. This one-two punch has necessitated a hybrid approach — one that includes both...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Cooling-tower-Water-A-Hybrid-Problem-Calls-for-a-Hybrid-Solution_10653.html
July 1, 2013
Last month at Aquatech China (Shanghai; June 5–7), this company introduced a new addition to its range of membrane-separation elements for reverse osmosis (RO)-based water treatment, namely, Low-Energy...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/RO-membrane-modules-for-lower-energy-consumption_10667.html
June 10, 2013
Siemens Energy (www.siemens.com/energy) will supply a wet-air-oxidation treatment system to handle ethylene spent caustic as part of an ethylene plant expansion. Customer is Qatar Petrochemical Co. (QAPCO), one of the leading companies in the Middle East that produces and supplies ethylene. The Zimpro wet air oxidation (WAO) system from Siemens will be part of QAPCO’s facility in Mesaieed Industrial...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Siemens-to-supply-wet-air-oxidation-system-to-Qatar_10617.html
June 1, 2013
There is an emerging crisis brewing for the chemical processing industries (CPI) in many regions of the world. Those regions include China, the world’s manufacturing powerhouse; swaths of the U.S., including large parts of its South; and chunks of Europe. For once, the crisis has nothing to do with energy costs. The emergence of cheap shale gas in the U.S., and the identification of exploitable...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/The-pending-water-shortage_10553.html
March 1, 2013
The Microdynamics Series OCS721 is a microwave-powered, open-channel ultraviolet (UV) system for water disinfection in municipal wastewater and water reuse applications. The device uses microwaves to energize low-pressure, high-output...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/A-UV-disinfection-system-with-longer-lamp-life_10291.html
February 1, 2013
Unlike fossil fuels or precious metals, phosphorus has no alternatives — we (and all other life forms on the planet) need phosphorus; it’s in our DNA, our bones and our energy-producing chemicals (ATP). We get it from our food — meat, grains and vegetables — so it’s not surprising that phosphorus is a key ingredient in fertilizer, as well as a component of sewage, manure and...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/P-recovery-on-the-move_10144.html
January 1, 2013
Non-chemical water treatment methods generally utilize electricity to prevent scale formation, mitigate corrosion and control microbial growth. When properly applied, non-chemical water-treatment technologies help plants reduce chemical consumption, minimize waste and possibly save water and energy. The following descriptions outline several types of non-chemical water-treatment methods. Magnetic fields...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Non-chemical-Water-Treatment_10055.html
December 1, 2012
I drink tap water! There, I finally said it. I am out of the closet — the water closet. My two sons are now cowering with shame, wondering how they can possibly ever face their Dasani-drinking friends again. It was maybe 20 years ago when I first encountered the concept of bottled water. What a strange idea! Why would anybody want to pay for something that’s free — and everywhere —...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/I-drink-tap-water_9993.html
December 1, 2012
Proxitane WW-12 Peracetic Acid (PAA) is an environmentally compatible microbiocide that is used for biological control in municipal wastewaters. This U.S. Environmental Protection Agency (EPA)-registered wastewater disinfectant is an alternative to halogenated...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Use-this-microbicide-for-municipal-wastewater_10011.html
November 1, 2012
  Weftec 2012, the Water Environment Federation’s 85th annual technical exhibition and conference, attracted over 17,000 attendees on September 29 – October 3, 2012 at the Morial Convention Center in New Orleans, La. With 980 exhibiting companies, the following is a small sampling of products and services that were on the exhibition floor.   Linde North America Gas treatment systems...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/weftec-2012-the-water-quality-event_9930.html
October 1, 2012
This month marks the 40th anniversary of the Clean Water Act (CWA), the primary federal law regulating discharges of pollutants into U.S. waters. As far as the developed world’s water priorities go, a great deal has changed since 1972. For one thing, the top challenge back then was eliminating releases of toxic substances. Today, that challenge is arguably being met, and we are now getting more...
http://www.che.com/environmental_health_and_safety/environmental_mgmt/water_treatment_and_supply/Water-and-energy-are-linked_9758.html
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