CAJ | 학술논문

用陶瓷膜基二氧化锆动态膜分离水包油型乳化液，利用正交实验方法优化分离操作条件，并考察压力、乳化液温度、乳化液 pH 值和溶液中盐离子种类四大因素分别对过程的影响。正交实验结果表明，油水分离最优条件为：乳化液浓度0.5 g?L?1、乳化液pH值为5、温度50℃、流量100 L?h?1、压力0.14 MPa。单因素实验结果表明，随压力增大，油水分离稳定渗透通量增大，但是当压力大于0.14 MPa后，通量几乎无变化；随油水乳化液温度和pH值的升高，稳定渗透通量先增大后减小；考察乳化液中加入盐离子的结果发现，阳离子盐的渗透通量大于阴离子盐的通量，并且阳离子电荷越多或阴离子电荷越少，通量越大。运用浓差极化、双电层和乳化液破乳等理论可以对以上实验现象做出合理解释。
용도자막기이양화고동태막분리수포유형유화액，이용정교실험방법우화분리조작조건，병고찰압력、유화액온도、유화액 pH 치화용액중염리자충류사대인소분별대과정적영향。정교실험결과표명，유수분리최우조건위：유화액농도0.5 g?L?1、유화액pH치위5、온도50℃、류량100 L?h?1、압력0.14 MPa。단인소실험결과표명，수압력증대，유수분리은정삼투통량증대，단시당압력대우0.14 MPa후，통량궤호무변화；수유수유화액온도화pH치적승고，은정삼투통량선증대후감소；고찰유화액중가입염리자적결과발현，양리자염적삼투통량대우음리자염적통량，병차양리자전하월다혹음리자전하월소，통량월대。운용농차겁화、쌍전층화유화액파유등이론가이대이상실험현상주출합리해석。
Microfiltration of oil-in-water emulsions was studied with ceramic tube supported zirconium dioxide (ZrO2) dynamic membranes. Orthogonal experimental design was employed to optimize operating conditions, and factors such as temperature, pH, salt ion species of the emulsion and operating pressure were analyzed. Results show that the optimal microfiltration conditions are: emulsion concentration 0.5 g?L?1, flow rate 100 L?h?1 and operating pressure 0.14 MPa under 50℃. The steady permeate flux increases with the increase of pressure until 0.14 MPa, which remains constant afterwards. Moreover, the flux increases first and then decreases with the increase of temperature or pH. The flux of cationic salts is greater than that of anionic salts when adding salt ions in the emulsion. Higher cationic charges or lower anionic charges result in greater permeate flux. This fundamental research is useful for future studies of ceramic-based dynamic membranes in oily wastewater separation.