Fredrick Cottrell first used wet electrostatic precipitators (ESPs) in 1910 to control acid mist emissions at a smelting operation in Selby, Calif. Since then, wet ESPs have been a mainstay of the sulfuric acid mist manufacturing industry, used at pyrometallurgical smelters and acid regeneration plants worldwide.
- By Steven Jaasund
- Feb 05, 2009
In university, we tackle big challenges with innovative solutions. Economic theory, stakeholder collaboration, moral reasoning, and assumptions win the day. So when we graduate, why shouldn’t we be able to implement those solutions?
- By Mark Brownlie
- Jan 23, 2009
Regulated facilities can expect change with a capital C in 2009 in the areas of global warming, hazardous air pollutants, new source review, and enforcement. These changes will come from the Obama administration, rules promulgated in the final days of the Bush administration, and judicial opinions rejecting or modifying past U.S. Environmental Protection Agency actions.
- By Bill S. Forcade
- Jan 22, 2009
Whether it is on coral reef bleaching, industrial thermal loading, or modeling freshwater fish populations, researchers and resoure managers must have temperature data collection methods that are accurate, reliable, and practical.
- By Paul Gannett
- Jan 14, 2009
The UN-Comfort Zone
Sometimes motivation is forced upon us.
- By Robert Evans Wilson, Jr.
- Jan 13, 2009
As Reality Undermines Models, Global Warming Become Less Tenable
- By H. Sterling Burnett
- Jan 13, 2009
Whether you support the fostering of human relationships over the Internet or not, statistics indicate that social networking is here to stay. Increasingly, doctors, pilots, and other professionals are logging onto niche communities to chat with peers, download industry-specific content, and attract clients.
- By Dianne Crocker
- Jan 06, 2009
President and Chief Executive Officer Chuck Gordon offers his insight into Siemens Water Technologies. Previously he served as executive vice president of the Water & Wastewater Systems Group, and from 2003 - 2005 he served as president of the USFilter Water & Wastewater Services and Products Group.
Water industry officials often consider vortex valves a novel technology for outlet flow control within stormwater detention systems. That's why the majority of the 17,000+ vortex valve installations in Europe and North America are used in stormwater detention. These units, however, can be implemented in water management systems to reduce erosion, aerate discharge, and equalize flow, among other things.
- By Robert Y.G. Andoh, Neil G. Raymond
- Dec 16, 2008
Chief Executive Officer Klaus Andersen shared his insight into the business of Veolia Water Solutions & Technologies (VWS) at WEFTEC.08. At his company, Andersen heads VWS 6, which covers the Americas and Australia.
Nationally established stormwater regulations can conflict with statewide enforcement and the trickle-down effect may leave local jurisdictions as well as developers confused about who is regulating what and why the regulations were organized in this way.
- By Amos Clark
- Dec 11, 2008
Population and regulatory demands, an increased awareness of the need to protect sensitive areas, and the value of water as a resource are driving new ways of thinking about how decentralized wastewater treatment can be used to manage these issues.
- By Dennis F. Hallahan, P.E.
- Dec 04, 2008
After operating two regenerative thermal oxidizers (RTOs) for the last 25 years, Soliant LLC of Lancaster, S.C., considered what repairs were needed to ensure reliability. The company asked Dürr Systems, Inc. EES, a supplier of RTOs, for recommendations.
November 1, 2006, was an historic day for the environmental due diligence industry. That’s the date the U.S. Environmental Protection Agency’s All Appropriate Inquiry (AAI) rule took effect, changing the environmental due diligence requirements for those seeking to qualify for cleanup liability protection under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA).
- By Dianne Crocker, Elizabeth Sherwood Krol, P.G.
- Dec 03, 2008
Union Park in downtown Las Vegas is one of the most ambitious brownfield redevelopment programs in the country.
- By Gary Carter, P.E., C.E.M., Daniel Burns, P.G., C.E.M.
- Nov 21, 2008
Have you ever wondered what happens to the glass, metal, and plastic you set out for recycling?
American Rivers, a river conservation organization, recently commended the Georgia Environmental Facilities Authority for promoting water efficiency as the first source of supply in its recently released study,
Exploiting the biological complexity of natural systems to cope with the complexity of industrial waste streams is becoming a more attractive option because engineered treatment wetlands typically are mechanically simple and have low operation and maintenance costs.
- By Mark Liner
- Nov 14, 2008
Over the past five years, desalination has gained significant momentum in California. With more than 10 projects in various stages of environmental review, design, and construction, desalination is planned to provide 1,500 to 2,000 million liters per day (ml/d) of new fresh drinking water supplies for the state by 2015.
Many electric generating utilities that burn coal are engaged in retrofit projects using flue gas desulfurization (FGD) to meet emissions standards mandated by Phase 2 of the Clean Air Act.
- By Chris Edmonds
- Nov 07, 2008