氯离子综合溶出速率对海砂淡化效果的影响分析

Analysis of the Influence of the Comprehensive Dissolution Rate of Chloride Ions on the Desalination Effect of Sea Sand

氯离子溶出速率在海砂淡化进程中产生正效应,因此对氯离子分布密度及溶出方式进行研究,以脱氯为主的纳滤、反渗透膜相结合,将海水与氯离子的膜溶出速率差异实现淡化。综合溶解理论,因溶解于海水中的不同离子依其化合价及分子量区别具备不同的溶出速率,可建立一种考虑各类离子相互作用的氯离子综合溶出速率模型及表达式。通过综合溶出速率指标,研究海砂的淡化效果更为实用且客观,并为工程用海砂的氯离子溶出速率提供新的影响因素分析方法。

The dissolution rate of chloride ions has a positive effect on the desalination process of sea sand.Research on the distribution density and dissolution mode of chloride ions,combining nanofiltration and reverse osmosis membranes with the main purpose of dechlorination,to achieve desalination through the difference in membrane dissolution rate between seawater and chloride ions.According to the comprehensive dissolution theory,different ions dissolve in seawater have different dissolution rates bases on their valence and molecular weight differences.Therefore,a comprehensive dissolution rate model and expression for chloride ions can be established that considers the interactions between various ions.It is more practical and objective to study the desalination effect of sea sand through the total dissolution rate index,and provides a new method for analyzing the influencing factors of the chloride ion dissolution rate of engineering sand.