反滲透膜分(fen)離技(ji)術(shu)的(de)基本(ben)原理

重慶(qing)恒(heng)諾水(shui)處理設(she)備有限公司從事水(shui)處理事業(ye)十一年，已成為(wei)純(chun)水(shui)、超(chao)(chao)純(chun)水(shui)設(she)備，實驗室超(chao)(chao)純(chun)水(shui)設(she)備，工(gong)業(ye)電(dian)子級超(chao)(chao)純(chun)水(shui)設(she)備,實驗室綜(zong)合廢水(shui)系統，礦用(yong)超(chao)(chao)純(chun)水(shui)處理設(she)備的專業(ye)生產廠家，以客(ke)(ke)戶需求為(wei)中心，致力于為(wei)客(ke)(ke)戶創造價值，提供最優質最實惠的水(shui)處理解(jie)決方案，今天分享：

反滲透膜分(fen)離(li)技術的(de)基(ji)本原理

在(zai)相(xiang)同的(de)外(wai)壓下，當溶(rong)(rong)液(ye)(ye)(ye)與純(chun)溶(rong)(rong)劑為半(ban)(ban)透膜(mo)(mo)(mo)隔開時(shi)，純(chun)溶(rong)(rong)劑會通(tong)(tong)過(guo)(guo)(guo)半(ban)(ban)透膜(mo)(mo)(mo)使(shi)溶(rong)(rong)液(ye)(ye)(ye)變淡(dan)的(de)現象稱為滲透。這時(shi)溶(rong)(rong)劑分子在(zai)單(dan)位時(shi)間內(nei)進(jin)入(ru)溶(rong)(rong)液(ye)(ye)(ye)內(nei)的(de)數目要比溶(rong)(rong)液(ye)(ye)(ye)內(nei)的(de)溶(rong)(rong)劑分子在(zai)同一時(shi)間內(nei)通(tong)(tong)過(guo)(guo)(guo)半(ban)(ban)透膜(mo)(mo)(mo)進(jin)入(ru)純(chun)溶(rong)(rong)劑內(nei)的(de)數目多。表面上看來，溶(rong)(rong)劑通(tong)(tong)過(guo)(guo)(guo)半(ban)(ban)透膜(mo)(mo)(mo)滲透到(dao)溶(rong)(rong)液(ye)(ye)(ye)中，使(shi)得(de)溶(rong)(rong)液(ye)(ye)(ye)體(ti)積增大，濃度(du)變稀，當單(dan)位時(shi)間內(nei)溶(rong)(rong)劑分子從兩個相(xiang)反的(de)方向穿過(guo)(guo)(guo)半(ban)(ban)透膜(mo)(mo)(mo)的(de)數目彼此(ci)相(xiang)等，即達到(dao)滲透平衡(heng)。滲透必須通(tong)(tong)過(guo)(guo)(guo)一種膜(mo)(mo)(mo)來進(jin)行，這種膜(mo)(mo)(mo)只能允許(xu)溶(rong)(rong)劑分子通(tong)(tong)過(guo)(guo)(guo)，而不(bu)允許(xu)溶(rong)(rong)質的(de)分子通(tong)(tong)過(guo)(guo)(guo)，因此(ci)稱之為半(ban)(ban)透膜(mo)(mo)(mo)。

當(dang)半透(tou)膜(mo)隔開溶(rong)(rong)(rong)液(ye)與純(chun)溶(rong)(rong)(rong)劑時，加(jia)在原溶(rong)(rong)(rong)液(ye)上使其恰好能阻(zu)止純(chun)溶(rong)(rong)(rong)劑進(jin)入溶(rong)(rong)(rong)液(ye)的(de)(de)額(e)外壓(ya)力稱之為滲(shen)透(tou)壓(ya)，通常溶(rong)(rong)(rong)液(ye)愈(yu)濃，溶(rong)(rong)(rong)液(ye)的(de)(de)滲(shen)透(tou)壓(ya)愈(yu)大。如果加(jia)在溶(rong)(rong)(rong)液(ye)上的(de)(de)壓(ya)力超過(guo)了滲(shen)透(tou)壓(ya)，則(ze)反而(er)使溶(rong)(rong)(rong)液(ye)中的(de)(de)溶(rong)(rong)(rong)劑向(xiang)純(chun)溶(rong)(rong)(rong)劑方(fang)(fang)向(xiang)流動，這(zhe)個過(guo)程叫做反滲(shen)透(tou)。反滲(shen)透(tou)膜(mo)分離(li)技術就(jiu)是利(li)用反滲(shen)透(tou)原理進(jin)行分離(li)的(de)(de)方(fang)(fang)法(fa)。