LIU Yangjiu, HAN Jitian, WANG Yunshan, et al. Experimental study on saline solution by direct contact membrane distillation[J]. CIESC Journal, 2018, (S2): 246-251.
LIU Yangjiu, HAN Jitian, WANG Yunshan, et al. Experimental study on saline solution by direct contact membrane distillation[J]. CIESC Journal, 2018, (S2): 246-251.DOI: 10.11949/j.issn.0438-1157.20181135.
Polyvinylidene fluoride (PVDF) hollow fiber membrane is used as membrane material
NaCl solutions with concentrations of 5%
15% and 25% are treated by direct contact membrane distillation. Orthogonal experiment is used to optimize the operation conditions
and the result show that value of the permeate flux (J) could achieve maximum value of 12.599 kg/(m2·h) when the inlet temperature of liquid side (T1) is 80℃
inlet temperature of osmotic side (T3) is 20℃
and flow rate (Q) is 100 L/h. Gained output ratio (GOR) could be 13.775 when T1 is 80℃
T3 is 35℃ and Q is 40 L/h. The salt rejection ratio all is more than 99.9%. The result of single factor experiment show that J is raised with the increase of T1 and Q
but decreased with the increase of T3. GOR is increased with the increase of T1 and T3
but decreased with the increase of the Q. The research indicate that membrane distillation technology has a good applied prospect of treat saline solution.