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生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)降解(jie)塔 其基本特征是在(zai)(zai)(zai)廢(fei)氣(qi)處(chu)理構筑物(wu)(wu)(wu)(wu)內設置微(wei)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)生(sheng)(sheng)(sheng)(sheng)長聚集的(de)(de)載體，在(zai)(zai)(zai)充氧的(de)(de)條件下，微(wei)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)在(zai)(zai)(zai)填(tian)料(liao)表面(mian)積聚附著形成生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)。當廢(fei)氣(qi)經(jing)過時，生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)中的(de)(de)微(wei)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)吸收(shou)分(fen)解(jie)廢(fei)氣(qi)中的(de)(de)有機物(wu)(wu)(wu)(wu)，使(shi)廢(fei)氣(qi)得(de)(de)到凈化，同時微(wei)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)也(ye)得(de)(de)到增(zeng)殖，生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)隨之增(zeng)厚。當生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)增(zeng)長到一定(ding)厚度，向生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)內部擴散的(de)(de)氧受到限制，其表面(mian)仍是好氧狀(zhuang)態，而內層則會呈(cheng)缺氧甚至厭氧狀(zhuang)態，并Z終導(dao)致(zhi)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)的(de)(de)脫(tuo)落。