高鹽廢水高COD降解用電(dian)滲析來(lai)處(chu)理(li)反滲透的(de)濃水,可以(yi)使(shi)鹽(yan)度更進(jin)一步(bu)的(de)濃縮, 以(yi)便在蒸(zheng)發中能(neng)大(da)幅度減少蒸(zheng)發量。與高鹽(yan)生(sheng)化(hua)的(de)結合普(pu)通(tong)生(sheng)化(hua)在高鹽(yan)狀況(kuang)下(xia),在生(sheng)化(hua)中起(qi)關鍵作用的(de)細菌將無(wu)法生(sheng)存, 能(neng)馴化(hua)出能(neng)在高鹽(yan)狀態下(xia)生(sheng)存的(de)而(er)鹽(yan)菌, 從(cong)而(er)可以(yi)先期(qi)降低COD,以(yi)達到進(jin)膜條件。
高(gao)COD降解(jie)與(yu)RO反滲(shen)(shen)(shen)透(tou)的(de)(de)結合電滲(shen)(shen)(shen)析與(yu)反滲(shen)(shen)(shen)透(tou)如結合使用(yong),優勢(shi)可以(yi)(yi)互補, 主要分以(yi)(yi)下(xia)兩種(zhong)情況: 用(yong)反滲(shen)(shen)(shen)透(tou)來處理電滲(shen)(shen)(shen)析的(de)(de)淡(dan)水(shui),可以(yi)(yi)得(de)到純度較高(gao)的(de)(de)淡(dan)水(shui), 而又不至于(yu)使反滲(shen)(shen)(shen)透(tou)的(de)(de)負荷過大, 常用(yong)于(yu)零排組合模式。
高鹽廢水高COD降解電(dian)(dian)(dian)滲(shen)析(xi)是(shi)膜(mo)分離(li)過(guo)程(cheng)中(zhong)較為成(cheng)熟的(de)(de)一項技術,已廣(guang)泛地(di)應(ying)用(yong)于(yu)(yu)苦咸水脫(tuo)鹽(yan)(yan),是(shi)世界(jie)上某些(xie)地(di)區(qu)生產淡水的(de)(de)主要方法。由于(yu)(yu)新(xin)開發的(de)(de)荷電(dian)(dian)(dian)膜(mo)具有更(geng)高的(de)(de)選擇性、更(geng)低的(de)(de)膜(mo)電(dian)(dian)(dian)阻、更(geng)好的(de)(de)熱穩定(ding)性相化學穩定(ding)性以及更(geng)高的(de)(de)機械強度(du)、使電(dian)(dian)(dian)滲(shen)析(xi)過(guo)程(cheng)不僅限于(yu)(yu)應(ying)用(yong)在脫(tuo)鹽(yan)(yan)方面(mian),而且在食品、醫藥及化學工(gong)(gong)業(ye)中(zhong),電(dian)(dian)(dian)滲(shen)析(xi)過(guo)程(cheng)還有許多其他的(de)(de)工(gong)(gong)業(ye)應(ying)用(yong),如工(gong)(gong)業(ye)廢(fei)水的(de)(de)處理,主要包括從(cong)(cong)酸(suan)液清洗金(jin)屬(shu)(shu)表面(mian)所形成(cheng)的(de)(de)廢(fei)液中(zhong)回(hui)收(shou)(shou)酸(suan)和(he)金(jin)屬(shu)(shu);從(cong)(cong)電(dian)(dian)(dian)鍍廢(fei)水中(zhong)回(hui)收(shou)(shou)重金(jin)屬(shu)(shu)離(li)子;從(cong)(cong)合(he)成(cheng)纖維廢(fei)水中(zhong)回(hui)收(shou)(shou)硫(liu)酸(suan)鹽(yan)(yan);從(cong)(cong)紙漿廢(fei)液中(zhong)回(hui)收(shou)(shou)亞硫(liu)酸(suan)鹽(yan)(yan)等。用(yong)于(yu)(yu)食品工(gong)(gong)業(ye)中(zhong),如牛奶(nai)(nai)脫(tuo)鹽(yan)(yan)制嬰兒奶(nai)(nai)粉;用(yong)于(yu)(yu)化學工(gong)(gong)業(ye)分離(li)離(li)子性物質(zhi)與非離(li)子性物質(zhi);在臨床治療(liao)中(zhong)電(dian)(dian)(dian)滲(shen)析(xi)可作為人(ren)工(gong)(gong)腎使用(yong)等