Fine Particles Collection Using an Electrostatic Precipitator Equipped with Electrostatic Flocking Electrodes as Collecting Plates

In recent, special environmental concern is directed towards controlling the emission of fine particles (from 0.1 to 1.0 �o ) . These fine particles possibly cause serious health hazard because of heavy metals and toxic compounds adsorbed on the particles. To improve the collection efficiency of fine particles, electrostatic flocking technique has been employed in this study. This technique is based on increasing surface area of the collecting electrode and on producing gradient force at the tip of fibers to suppress reentrainment. In this article, an experimental study was performed to evaluate the effect of fine fiber on the collection efficiency of fine particles using the ESP with electrostatic flocking electrodes as collecting plates. The ESP achieved collection efficiency over 94%, which was higher than that of the flat plate electrode for fine particles (0.30.5�o in diameter) with a short residence time (0.06 s). We confirmed that fine particles agglomerated at the tip of the flocking fibers. These results indicate that the new type ESP examined in this study is effective to improve removal performance of fine particles.