In this study, a novel method for intensification of drinking water production from seawater in a membrane distillation system is introduced. For this purpose, the feed water was passed through an intensive magnetic field and then introduced to the membrane module. The experiments were carried out for 80 h at different feed temperatures and flow rates, and different magnetic field intensities to ensure the effectiveness of the method. The best location for applying the magnetic field was determined, experimentally. In the absence of the magnetic field, a flux decline of about 50% was observed during 80 h of operation, while by applying three pairs of magnets, a 20% increase in the permeate flux and 72% decrease in the product TDS was observed. By increasing the magnetic field intensity, the size and the amount of the scale particles formed in the bulk solution increased but the analysis revealed that the scale build-up on the membrane surface was decreased upon applying the magnetic field. The process was optimized by the RSM method for obtaining the operating condition for attaining the best performance of the membrane system. At this optimum condition, an average permeate flux of 3.06 L/m2.h was obtained.

在这项研究中，介绍了一种在膜蒸馏系统中强化海水生产饮用水的新方法。为此，给水通过强磁场，然后引入膜组件。实验在不同的进料温度和流速以及不同的磁场强度下进行 80 h，以确保该方法的有效性。通过实验确定了施加磁场的最佳位置。在没有磁场的情况下，在运行 80 小时期间观察到通量下降约 50%，而通过应用三对磁铁，观察到渗透通量增加 20%，产物 TDS 减少 72%。通过增加磁场强度，在本体溶液中形成的水​​垢颗粒的大小和数量增加，但分析表明，施加磁场后，膜表面上的水垢积聚减少了。该工艺通过 RSM 方法进行优化，以获得获得膜系统最佳性能的操作条件。在此最佳条件下，平均渗透通量为 3.06 L/m2.h。