水温对膜法水处理中离子截留率影响的试验研究

Experimental Research for the Influence of the water Temperature on the Ion Interception Ratio in the Water Treatment with Nanofiltration Membrane Method

文中基于不同温度下地下咸水的膜水处理试验,分析和揭示了原水温度与咸水离子截流率间的关系。结果表明:原水温度对各种离子的截留率有明显的影响;不同价位的离子对水温的反应不同。二价离子的截留率随温度的增加而提高,呈乘幂型曲线变化。一价离子的截留率变化的总趋势是随温度的增加而减小,呈二次曲线变化。研究结果可为膜水处理技术的应用提供依据。

Based on the underground brackish water treatment tests under different temperature with nanofiltration membrane method,the relation between the water temperature and the intercepted ion ratio were analyzed and announced to public in this thesis. The results expresses that the temperature of the treated water has impotent influence on the intercepted ion rates, and different types of ions have the different respond on the temperature change. The intercepted ion rates for bivalence ions increase with temperature increment and the relation between the water temperature and the intercepted ion rate can be presented by a power function. For the one valence ions, the intercepted ion rates decrease with temperature increment and the relation can be presented by a polynomial with the two of power. The researched results will be used for reference in the water treatment with nanofittration membrane method.