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生物凈化洗滌塔基本特征是在廢(fei)氣(qi)(qi)處(chu)理構筑物(wu)(wu)(wu)(wu)內(nei)設(she)置微(wei)(wei)生(sheng)(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)生(sheng)(sheng)(sheng)(sheng)(sheng)長聚集的(de)(de)(de)載(zai)體,在充氧(yang)的(de)(de)(de)條件(jian)下,微(wei)(wei)生(sheng)(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)在填料表(biao)面積聚附著形成生(sheng)(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)(mo)(mo)。當廢(fei)氣(qi)(qi)經過(guo)時(shi),生(sheng)(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)(mo)(mo)中的(de)(de)(de)微(wei)(wei)生(sheng)(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)吸收(shou)分解廢(fei)氣(qi)(qi)中的(de)(de)(de)有機物(wu)(wu)(wu)(wu),使廢(fei)氣(qi)(qi)得到(dao)(dao)凈化(hua),同時(shi)微(wei)(wei)生(sheng)(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)也得到(dao)(dao)增殖,生(sheng)(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)(mo)(mo)隨之增厚(hou)。當生(sheng)(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)(mo)(mo)增長到(dao)(dao)一定(ding)厚(hou)度(du),向(xiang)生(sheng)(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)(mo)(mo)內(nei)部擴散的(de)(de)(de)氧(yang)受到(dao)(dao)限(xian)制,其表(biao)面仍(reng)是好氧(yang)狀態,而(er)內(nei)層則(ze)會呈(cheng)缺氧(yang)甚(shen)至厭(yan)氧(yang)狀態,并導致生(sheng)(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)(mo)(mo)的(de)(de)(de)脫(tuo)落。隨后,填料表(biao)面還(huan)會繼續生(sheng)(sheng)(sheng)(sheng)(sheng)長新的(de)(de)(de)生(sheng)(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)(mo)(mo),周而(er)復始(shi),使廢(fei)氣(qi)(qi)得到(dao)(dao)凈化(hua)。
生(sheng)(sheng)物(wu)洗(xi)滌(di)塔(ta)(ta)(ta)(ta)(ta)與精餾塔(ta)(ta)(ta)(ta)(ta)類似,由(you)(you)塔(ta)(ta)(ta)(ta)(ta)體,塔(ta)(ta)(ta)(ta)(ta)板,再沸(fei)器(qi),冷(leng)凝器(qi)組成。由(you)(you)于(yu)(yu)生(sheng)(sheng)物(wu)洗(xi)滌(di)塔(ta)(ta)(ta)(ta)(ta)是(shi)(shi)進(jin)行粗分(fen)(fen)離(li)的(de)設(she)備,所(suo)以塔(ta)(ta)(ta)(ta)(ta)板數量一般較少,通(tong)常不(bu)會超過十(shi)級。 生(sheng)(sheng)物(wu)洗(xi)滌(di)塔(ta)(ta)(ta)(ta)(ta)適用于(yu)(yu)含有少量粉(fen)(fen)塵的(de)混合氣(qi)體分(fen)(fen)離(li),各組分(fen)(fen)不(bu)會發(fa)(fa)生(sheng)(sheng)反應,且產(chan)物(wu)應容易(yi)液(ye)(ye)化(hua),粉(fen)(fen)塵等雜(za)質(也可以稱(cheng)之為高沸(fei)物(wu))不(bu)易(yi)液(ye)(ye)化(hua)或(huo)凝固(gu)(gu)。當(dang)混合氣(qi)從生(sheng)(sheng)物(wu)洗(xi)滌(di)塔(ta)(ta)(ta)(ta)(ta)中部(bu)通(tong)入生(sheng)(sheng)物(wu)洗(xi)滌(di)塔(ta)(ta)(ta)(ta)(ta),由(you)(you)于(yu)(yu)塔(ta)(ta)(ta)(ta)(ta)板間存在產(chan)物(wu)組分(fen)(fen)液(ye)(ye)體,產(chan)物(wu)組分(fen)(fen)氣(qi)體液(ye)(ye)化(hua)的(de)同時蒸發(fa)(fa)部(bu)分(fen)(fen),而雜(za)質由(you)(you)于(yu)(yu)不(bu)能被液(ye)(ye)化(hua)或(huo)凝固(gu)(gu),當(dang)通(tong)過有液(ye)(ye)體存在的(de)塔(ta)(ta)(ta)(ta)(ta)板時將會被產(chan)物(wu)組分(fen)(fen)液(ye)(ye)體固(gu)(gu)定下來,產(chan)生(sheng)(sheng)洗(xi)滌(di)作(zuo)用,生(sheng)(sheng)物(wu)洗(xi)滌(di)塔(ta)(ta)(ta)(ta)(ta)就是(shi)(shi)根據這一原理(li)設(she)計和制造(zao)的(de)。
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