本文選題：正滲透膜組 + 壓力延遲滲透��； 參考：《現(xiàn)代化工》2017年02期

【摘要】：利用卷式醋酸纖維素正滲透膜組,以Na Cl溶液和自來(lái)水分別作驅(qū)動(dòng)液和料液,考察了進(jìn)口壓力、溶液流量、驅(qū)動(dòng)液濃度和跨膜壓差等因素對(duì)膜組性能的影響,并對(duì)以上4個(gè)因素進(jìn)行單因素實(shí)驗(yàn)。結(jié)果表明,相同流速下料液流道阻力明顯大于驅(qū)動(dòng)液流道;隨著料液和驅(qū)動(dòng)液流量的增加,膜組水通量呈緩慢上升趨勢(shì),料液流量改變對(duì)水通量的影響更明顯一些,但和膜片相比,膜組的單位面積水通量有所下降;通過(guò)增加驅(qū)動(dòng)液濃度能夠較大幅度提升膜組水通量和功率密度,但濃差極化現(xiàn)象的抑制作用也逐漸增加。隨著跨膜壓差的升高,水通量呈逐漸下降趨勢(shì),當(dāng)其達(dá)到滲透壓的一半時(shí),膜組功率密度達(dá)到最大。
[Abstract]:The effects of inlet pressure, solution flow rate, driving liquid concentration and transmembrane pressure difference on the performance of the membrane group were investigated using NaCl solution and tap water as the driving fluid and the feed liquid, respectively, using the winding cellulose acetate positive osmotic membrane group. Single factor experiments were carried out on the above four factors. The results showed that at the same flow rate, the resistance of the feed fluid passage was obviously greater than that of the driving fluid channel, and with the increase of the feed and driving fluid flow rate, the water flux of the membrane increased slowly, and the change of the feed flow rate had a more obvious effect on the water flux. However, compared with the membrane, the water flux per unit area of the membrane decreased, and the water flux and power density of the membrane increased greatly by increasing the concentration of the driving liquid, but the inhibition of the concentration polarization phenomenon increased gradually. With the increase of the transmembrane pressure difference, the water flux decreases gradually. When the membrane pressure reaches half of the osmotic pressure, the power density of the membrane group reaches the maximum.
【作者單位】： 中國(guó)海洋大學(xué)工程學(xué)院山東省海洋工程重點(diǎn)實(shí)驗(yàn)室;
【基金】：海洋可再生能源專項(xiàng)資金項(xiàng)目(GHME2013JS07)
【分類號(hào)】：TQ028.8

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