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(shi)式(shi)電(dian)(dian)除塵器主(zhu)要有兩種結(jie)構形式(shi)，一種是(shi)(shi)使(shi)用(yong)耐(nai)腐蝕導(dao)(dao)電(dian)(dian)材(cai)(cai)(cai)料（可以為(wei)導(dao)(dao)電(dian)(dian)性能優良的的非(fei)金(jin)屬材(cai)(cai)(cai)料或具有耐(nai)腐蝕特性的金(jin)屬材(cai)(cai)(cai)料）做(zuo)集塵極，另一種是(shi)(shi)用(yong)通(tong)過(guo)噴水(shui)(shui)或溢流水(shui)(shui)形成導(dao)(dao)電(dian)(dian)水(shui)(shui)膜，利用(yong)不導(dao)(dao)電(dian)(dian)的非(fei)金(jin)屬材(cai)(cai)(cai)料做(zuo)集塵極。

收塵原理

濕式(shi)電(dian)(dian)除(chu)塵(chen)器和與(yu)干式(shi)電(dian)(dian)除(chu)塵(chen)器的收(shou)塵(chen)原理相同(tong)，都是靠高(gao)壓電(dian)(dian)暈(yun)放電(dian)(dian)使得粉塵(chen)荷電(dian)(dian)，荷電(dian)(dian)后的粉塵(chen)在電(dian)(dian)場力的作用下到達集(ji)塵(chen)板/管。干式(shi)電(dian)(dian)收(shou)塵(chen)器主要(yao)處(chu)理含水很低(di)的干氣(qi)體，濕式(shi)電(dian)(dian)除(chu)塵(chen)器主要(yao)處(chu)理含水較(jiao)高(gao)乃至飽和的濕氣(qi)體。在對集(ji)塵(chen)板/管上捕集(ji)到的粉塵(chen)清(qing)除(chu)方(fang)式(shi)上WESP與(yu)DESP有較(jiao)大(da)區(qu)別，干式(shi)電(dian)(dian)除(chu)塵(chen)器一般采用機械振打或聲波(bo)清(qing)灰等方(fang)式(shi)清(qing)除(chu)電(dian)(dian)極上的積灰，而(er)濕式(shi)電(dian)(dian)除(chu)塵(chen)器則采用定期沖(chong)洗的方(fang)式(shi)，使粉塵(chen)隨著沖(chong)刷(shua)液的流動而(er)清(qing)除(chu)。