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Related Experiment Videos

Membrane-based wet electrostatic precipitation.

David J Bayless1, Liming Shi, Gregory Kremer

  • 1Ohio Coal Research Center, Ohio University, Athens, OH 45701-2979, USA. bayless@ohio.edu

Journal of the Air & Waste Management Association (1995)
|July 19, 2005
PubMed
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Novel membrane-based wet electrostatic precipitators (ESPs) offer superior fine particulate matter and acid aerosol collection. This advanced wet ESP technology overcomes limitations of traditional systems, improving air pollution control efficiency.

Area of Science:

  • Environmental Engineering
  • Chemical Engineering
  • Air Pollution Control Technology

Background:

  • Dry electrostatic precipitators (ESPs) struggle to capture fine particulate matter (PM2.5).
  • Existing wet ESPs face challenges like water spraying, dry spots, and corrosion, limiting their effectiveness for secondary PM2.5 control.
  • Acid aerosols and oxidized mercury are significant air pollutants requiring efficient removal methods.

Purpose of the Study:

  • To evaluate the performance of a novel membrane-based wet ESP for air pollution control.
  • To compare the collection efficiency of the membrane wet ESP against traditional metal-plate wet ESPs.
  • To assess the potential of membrane collectors in overcoming limitations of current wet ESP technology.

Main Methods:

  • Laboratory-scale and pilot-scale testing of a membrane-based wet ESP.

Related Experiment Videos

  • Utilized corrosion-resistant membrane collectors designed for efficient water distribution via capillary action.
  • Performance comparison with a conventional metal-plate wet ESP at FirstEnergy's Bruce Mansfield Plant.

    • Main Results:

    • The membrane wet ESP demonstrated higher collection efficiency for fine particulates (PM2.5), acid aerosols, and oxidized mercury.
    • Effective water distribution and reduced corrosion were observed in the membrane collector.
    • The membrane wet ESP achieved superior performance with approximately 15% less collecting area compared to the metal-plate wet ESP.

    Conclusions:

    • Membrane-based wet ESPs represent a significant advancement in controlling fine particulate matter and acid aerosols.
    • The novel membrane collector design effectively addresses key limitations of conventional wet ESPs.
    • This technology offers a more efficient and potentially more compact solution for industrial air pollution control.