華天環保MEBR 工藝——生物膜與膜生物的結合
來(lai)源： 閱讀：2659 更新時間：2011-12-12 10:28近年(nian)來，水處理(li)技(ji)術有了更(geng)新的(de)技(ji)術和概念，各種新型(xing)(xing)、改良的(de)高效廢水生物(wu)(wu)處理(li)技(ji)術應運(yun)而生，生物(wu)(wu)處理(li)與(yu)膜(mo)分離(li)技(ji)術相(xiang)結合的(de)新型(xing)(xing)工藝——膜(mo)生物(wu)(wu)反應器 (Membrane Bio—Reactor簡稱MBR)是其中最引(yin)人(ren)注目(mu)的(de)水處理(li)技(ji)術。
雖然MBR技術已經(jing)得(de)到了較為廣泛(fan)的應用, 但是(shi)普通(tong)(tong)膜生(sheng)物反應器將活性污(wu)泥法與(yu)膜過濾相結合，膜周圍污(wu)泥濃度(du)很高(gao)，通(tong)(tong)常為2000-80000ppm，使得(de)膜的通(tong)(tong)量(liang)較低(di)，膜的壽命也(ye)較低(di)。
MEBR (Membrane Enhanced Bio-Reactor) 工藝將生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)(mo)(mo)(mo)(mo)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)與膜(mo)(mo)(mo)(mo)(mo)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)相結合(he)，開創了膜(mo)(mo)(mo)(mo)(mo)法污(wu)(wu)水(shui)(shui)(shui)處(chu)(chu)理的(de)(de)(de)(de)(de)(de)新紀元。MEBR污(wu)(wu)水(shui)(shui)(shui)進入生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)(mo)(mo)(mo)(mo)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)，利用(yong)(yong)生(sheng)(sheng)(sheng)(sheng)長在生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)填料(liao)表面的(de)(de)(de)(de)(de)(de)微(wei)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)(mo)(mo)(mo)(mo)降(jiang)解(jie)污(wu)(wu)染物(wu)(wu)(wu)(wu)，使(shi)得生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)出(chu)水(shui)(shui)(shui)中(zhong)的(de)(de)(de)(de)(de)(de)污(wu)(wu)泥(ni)(ni)(ni)含(han)(han)量(liang)大(da)(da)(da)大(da)(da)(da)降(jiang)低(di)，污(wu)(wu)泥(ni)(ni)(ni)的(de)(de)(de)(de)(de)(de)沉(chen)將性能大(da)(da)(da)大(da)(da)(da)提(ti)高(gao)(gao)(gao)，因(yin)而可(ke)以(yi)(yi)利用(yong)(yong)較小的(de)(de)(de)(de)(de)(de)沉(chen)淀體(ti)(ti)積(ji)實現(xian)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)產(chan)水(shui)(shui)(shui)污(wu)(wu)泥(ni)(ni)(ni)含(han)(han)量(liang)大(da)(da)(da)大(da)(da)(da)降(jiang)低(di)。生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)(mo)(mo)(mo)(mo)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)出(chu)水(shui)(shui)(shui)進入中(zhong)空維膜(mo)(mo)(mo)(mo)(mo)分(fen)(fen)(fen)(fen)離(li)(li)裝(zhuang)(zhuang)置，由于膜(mo)(mo)(mo)(mo)(mo)分(fen)(fen)(fen)(fen)離(li)(li)裝(zhuang)(zhuang)置的(de)(de)(de)(de)(de)(de)給水(shui)(shui)(shui)中(zhong)污(wu)(wu)泥(ni)(ni)(ni)含(han)(han)量(liang)被(bei)控制在100ppm以(yi)(yi)下(xia)，膜(mo)(mo)(mo)(mo)(mo)的(de)(de)(de)(de)(de)(de)工作(zuo)環境成倍改(gai)善，膜(mo)(mo)(mo)(mo)(mo)的(de)(de)(de)(de)(de)(de)通量(liang)也得以(yi)(yi)明(ming)(ming)顯提(ti)高(gao)(gao)(gao)。通過膜(mo)(mo)(mo)(mo)(mo)分(fen)(fen)(fen)(fen)離(li)(li)裝(zhuang)(zhuang)置截(jie)(jie)(jie)留(liu)水(shui)(shui)(shui)中(zhong)的(de)(de)(de)(de)(de)(de)游(you)(you)(you)離(li)(li)活性細(xi)菌(jun)、細(xi)菌(jun)尸(shi)體(ti)(ti)、其它浮物(wu)(wu)(wu)(wu)和(he)部分(fen)(fen)(fen)(fen)大(da)(da)(da)分(fen)(fen)(fen)(fen)子(zi)化(hua)合(he)物(wu)(wu)(wu)(wu)，使(shi)水(shui)(shui)(shui)質進一步提(ti)高(gao)(gao)(gao)。被(bei)膜(mo)(mo)(mo)(mo)(mo)截(jie)(jie)(jie)留(liu)的(de)(de)(de)(de)(de)(de)游(you)(you)(you)離(li)(li)活性細(xi)菌(jun)、細(xi)菌(jun)尸(shi)體(ti)(ti)、其它懸浮物(wu)(wu)(wu)(wu)和(he)部分(fen)(fen)(fen)(fen)大(da)(da)(da)分(fen)(fen)(fen)(fen)子(zi)有機(ji)(ji)物(wu)(wu)(wu)(wu)再(zai)全部或(huo)部分(fen)(fen)(fen)(fen)返回(hui)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)(mo)(mo)(mo)(mo)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)。被(bei)膜(mo)(mo)(mo)(mo)(mo)截(jie)(jie)(jie)留(liu)的(de)(de)(de)(de)(de)(de)游(you)(you)(you)離(li)(li)活性細(xi)菌(jun)會(hui)在生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)中(zhong)被(bei)不斷富(fu)(fu)集(ji)。當(dang)這些(xie)(xie)(xie)活性細(xi)菌(jun)被(bei)富(fu)(fu)集(ji)到(dao)較高(gao)(gao)(gao)濃度(du)時，它們的(de)(de)(de)(de)(de)(de)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)降(jiang)解(jie)作(zuo)用(yong)(yong)就會(hui)明(ming)(ming)顯的(de)(de)(de)(de)(de)(de)體(ti)(ti)現(xian)出(chu)來，以(yi)(yi)此(ci)(ci)可(ke)以(yi)(yi)加(jia)強(qiang)了生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)效率(lv)。被(bei)膜(mo)(mo)(mo)(mo)(mo)截(jie)(jie)(jie)留(liu)的(de)(de)(de)(de)(de)(de)細(xi)菌(jun)尸(shi)體(ti)(ti)和(he)大(da)(da)(da)分(fen)(fen)(fen)(fen)子(zi)有機(ji)(ji)物(wu)(wu)(wu)(wu)會(hui)不斷循環回(hui)到(dao)固定(ding)床生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)中(zhong)，使(shi)之在生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)中(zhong)停留(liu)時間和(he)濃度(du)成倍地增長。此(ci)(ci)時，固定(ding)床生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)會(hui)逐漸(jian)馴化(hua)出(chu)降(jiang)解(jie)這些(xie)(xie)(xie)物(wu)(wu)(wu)(wu)質的(de)(de)(de)(de)(de)(de)細(xi)菌(jun)菌(jun)落，這些(xie)(xie)(xie)細(xi)菌(jun)菌(jun)落將這些(xie)(xie)(xie)通常隨出(chu)水(shui)(shui)(shui)排(pai)放難降(jiang)解(jie)的(de)(de)(de)(de)(de)(de)污(wu)(wu)染物(wu)(wu)(wu)(wu)降(jiang)解(jie)。被(bei)膜(mo)(mo)(mo)(mo)(mo)截(jie)(jie)(jie)留(liu)的(de)(de)(de)(de)(de)(de)污(wu)(wu)泥(ni)(ni)(ni)再(zai)返回(hui)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)膜(mo)(mo)(mo)(mo)(mo)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)，通過生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)降(jiang)解(jie)而減(jian)低(di)污(wu)(wu)泥(ni)(ni)(ni)排(pai)量(liang)。由此(ci)(ci)可(ke)見膜(mo)(mo)(mo)(mo)(mo)分(fen)(fen)(fen)(fen)離(li)(li)裝(zhuang)(zhuang)置截(jie)(jie)(jie)留(liu)物(wu)(wu)(wu)(wu)的(de)(de)(de)(de)(de)(de)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)饋可(ke)以(yi)(yi)從多(duo)方(fang)面強(qiang)化(hua)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)，提(ti)高(gao)(gao)(gao)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)效率(lv)。而生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)效率(lv)的(de)(de)(de)(de)(de)(de)提(ti)高(gao)(gao)(gao)可(ke)以(yi)(yi)進一步提(ti)高(gao)(gao)(gao)生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)出(chu)水(shui)(shui)(shui)水(shui)(shui)(shui)質，減(jian)小膜(mo)(mo)(mo)(mo)(mo)分(fen)(fen)(fen)(fen)離(li)(li)裝(zhuang)(zhuang)置的(de)(de)(de)(de)(de)(de)工作(zuo)壓力，加(jia)強(qiang)膜(mo)(mo)(mo)(mo)(mo)分(fen)(fen)(fen)(fen)離(li)(li)裝(zhuang)(zhuang)置的(de)(de)(de)(de)(de)(de)處(chu)(chu)理效果。因(yin)此(ci)(ci)，固定(ding)床生(sheng)(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)器(qi)(qi)(qi)(qi)和(he)膜(mo)(mo)(mo)(mo)(mo)分(fen)(fen)(fen)(fen)離(li)(li)裝(zhuang)(zhuang)置的(de)(de)(de)(de)(de)(de)結合(he)可(ke)以(yi)(yi)互相加(jia)強(qiang)，起到(dao)較好(hao)的(de)(de)(de)(de)(de)(de)處(chu)(chu)理效果。
