Pollution Engineering - November 2008 - (Page 44)

Wet ing ing boilers and in some cases have forced c operators to install new emission control equipment. In many cases, the technology of choice is the wet ESP. A move to wet technology to meet MACT requirements may, however, have a silver lining. Because of the inherent flexibility of this technology, boilers with wet ESPs often can be fired with alternative, low-grade fuels such as heavy oil, petroleum coke and tirederived fuel. These fuels are often much cheaper than higher-grade fuels. kV PEAK 60 50 AVERAGE 40 MINIMUM 30 TIME High-frequency power supply Conventional power supply Where can we go? Because wet ESP technology is flexible, the array of applications in which it can be applied is indeed very large. Here is a brief list of some novel areas where the technology may be a good fit: Regenerative catalytic oxidizers (RCOs). RCOs consume less energy than RTOs. A limiting factor in their use, however, is gas cleanliness, i.e., too much particulate can foul or poison the catalytic media. In situations where a wet ESP is required to protect a Figure 2: High-frequency and 60-Hz waveforms. downstream RTO, there may still be too much particulate to allow for catalytic operation. In these cases, if the performance of the wet ESP could be enhanced, then the RTO could be changed into a catalytic unit with significant energy savings. As fuel prices continue to rise, this approach could become more attractive. Mist elimination – Wet ESPs are excellent mist eliminators. In situations where very high mist removal efficiency is required, a wet ESP may be an appropriate approach. Also, because they are so efficient on relatively large water droplets, wet ESPs could be adapted for the recovery of drift from cooling towers. Gas separation. Research on gas separation membrane technology continues at a fast Hyatt Regency Riverfront Hotel, Jacksonville, Florida FIFTH www.battelle.org/sedimentscon INTERNATIONAL The program at the International Conference on Remediation of CONFERENCE ON Contaminated Sediments combines scienti c and engineering adREMEDIATION OF vances with management frameworks and policies to achieve CONTAMINATED SEDIMENTS effective sediments remediation and environmental protection goals. Sponsors include organizations that conduct research or provide services related to contaminated sediment assessment, remediation, and management. Previous meetings in this series were held in Venice, New Orleans, and Savannah. February 2-5, 2009 On Monday, February 2, nine short courses will be offered during the morning and afternoon. The Conference will begin late Monday afternoon with exhibits and the welcome reception. During the Plenary Session, Greg Marshall, Vice President for Remote Imaging at National Geographic, will give the opening presentation. Tuesday through Thursday, approximately 450 platform and poster presentations and four panel sessions will cover recent advances in contaminated sediment characterization, assessment, and monitoring; processes and modeling; management and policy; and remediation and restoration. The 36-page Preliminary Program can be downloaded from www.battelle.org/sedimentscon. To request a printed copy or to inquire about any aspect of the program, please send an e-mail to 800-783-6338 614-488-2030. sedimentscon@battelle.org or call 800 783 6338 (USA, Canada) or 614 488 2030. PRESENTED BY SPONSORS 44 PLE11084Batt.indd 1 Pollution Engineering NOVEMBER2008 10/8/08 1:33:22 PM http://www.battelle.org/sedimentscon http://www.battelle.org/sedimentscon http://www.battelle.org/sedimentscon

Table of Contents Feed for the Digital Edition of Pollution Engineering - November 2008

Pollution Engineering - November 2008 Contents The Editor's Desk EnviroNews PE Events Legal Lookout Casebook Canada Environment Management The Green Files Waste Island Phase I ESAs and Vapor Intrusion Meeting the Mercury Target Wet ESPs - The Sky's the Limit Most Successful IFAT China Ever Thermoplastic to the Rescue Install a Trench Without Open Excavations Remediate Impacted Soils Without Accumulation of Metabolites Apply an Alternative to Wet ESP Solve These Common Pump Problems Minimize Risks Handling Ammonia Monitor International Regulatory Developments for Audits Skim Oil and Save Prevent Chemical Vapor Intrusion Spill Control and Containment Products Pumps and Systems Equipment PE Products Classified Marketplace Advertisers Index State Rules

Pollution Engineering - November 2008

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