濕式電除塵器是一種用來處理含微量粉塵和微顆粒的新除塵設備，主要用來除去含濕氣體中的塵、酸霧、水滴、氣溶膠、臭味、PM2.5等有害物質，是治理大氣粉塵污染的理想設備。

濕式電除塵器通常簡稱WESP，與干式電除塵器的除塵基本原理相同，要經歷荷電、收集和清灰三個階段。

濕式電(dian)除塵(chen)器主要有兩種結(jie)構(gou)形式，一種是(shi)使(shi)用耐腐蝕導(dao)(dao)電(dian)材(cai)(cai)料(liao)(liao)（可以為導(dao)(dao)電(dian)性能(neng)優良的(de)的(de)非(fei)金(jin)屬(shu)材(cai)(cai)料(liao)(liao)或具有耐腐蝕特性的(de)金(jin)屬(shu)材(cai)(cai)料(liao)(liao)）做集(ji)塵(chen)極，另一種是(shi)用通過噴(pen)水(shui)(shui)或溢(yi)流(liu)水(shui)(shui)形成導(dao)(dao)電(dian)水(shui)(shui)膜，利用不導(dao)(dao)電(dian)的(de)非(fei)金(jin)屬(shu)材(cai)(cai)料(liao)(liao)做集(ji)塵(chen)極。

收塵原理

濕(shi)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)器和(he)與(yu)干(gan)(gan)(gan)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)器的(de)(de)收塵(chen)原理相同，都是靠高(gao)壓電(dian)(dian)(dian)(dian)暈(yun)放電(dian)(dian)(dian)(dian)使得粉塵(chen)荷電(dian)(dian)(dian)(dian)，荷電(dian)(dian)(dian)(dian)后(hou)的(de)(de)粉塵(chen)在電(dian)(dian)(dian)(dian)場力(li)的(de)(de)作用(yong)(yong)下到(dao)達集(ji)(ji)塵(chen)板/管。干(gan)(gan)(gan)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)收塵(chen)器主要處(chu)理含水(shui)很低的(de)(de)干(gan)(gan)(gan)氣體，濕(shi)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)器主要處(chu)理含水(shui)較高(gao)乃至飽和(he)的(de)(de)濕(shi)氣體。在對集(ji)(ji)塵(chen)板/管上捕(bu)集(ji)(ji)到(dao)的(de)(de)粉塵(chen)清除(chu)(chu)方(fang)式(shi)(shi)(shi)(shi)上WESP與(yu)DESP有較大區別，干(gan)(gan)(gan)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)器一般采用(yong)(yong)機械(xie)振打或聲波清灰等(deng)方(fang)式(shi)(shi)(shi)(shi)清除(chu)(chu)電(dian)(dian)(dian)(dian)極上的(de)(de)積灰，而濕(shi)式(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)除(chu)(chu)塵(chen)器則采用(yong)(yong)定期沖(chong)洗的(de)(de)方(fang)式(shi)(shi)(shi)(shi)，使粉塵(chen)隨著沖(chong)刷(shua)液的(de)(de)流動而清除(chu)(chu)。