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考察了膜蒸馏用于脱盐时膜的污染情况 ,分析了不同无机盐对疏水膜的具体影响 .未处理的苦咸水含有难溶无机盐 ,膜蒸馏过程中膜表面会出现沉积物 .沉积物会破坏膜的疏水性影响渗透液的质量 ,同时影响膜蒸馏传递过程 ,降低渗透通量 .在无机盐浓度较低时 ,通过料液预处理剔除不溶物可以有效防止沉积物的出现
The membrane fouling was investigated when membrane distillation was used for desalting, and the specific effects of different inorganic salts on the hydrophobic membrane were analyzed.The untreated brackish water contained insoluble inorganic salts, and the sediment would appear on the membrane surface during membrane distillation The hydrophobicity of the membrane will damage the quality of the permeate and affect the process of membrane distillation and reduce the flux of permeation.When the concentration of inorganic salts is low,