Membrane WESP-A Lower Cost Technology for Fine Particulate Control, 2009 TAPPI Engineering, Pulping, Environmental Conference

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Multi-pollutant control technologies will become more important in the future. This new membrane wet electrostatic precipitator (WESP) system is ideally suited to and very cost effective for, removing PM2.5 and SO₃ after industrial boilers and wood products dryers.

WESP can readily collect acid aerosol and fine particulate due to greater corona power and virtually no re-entrainment. The main historical limitation associated with wet precipitators has been the higher cost of special alloys and stainless steel material used in their manufacture. This new technology WESP, based on fabric membrane for the collecting electrodes, dramatically reduces weight and cost, compared to conventional, metallic WESPs.