不同矿石对反渗透淡化水的调质效果研究（英文）

发布时间：2018-03-28 22:29

本文选题：反渗透淡化水　切入点：调质　出处：《浙江大学学报(理学版)》2016年02期

【摘要】：反渗透海水淡化已成为解决淡水危机的一种有效方法,但反渗透淡化水的化学稳定性差,使用过程中会腐蚀管网,作为饮用水存在一定的健康风险.采用溶解矿石法对反渗透淡化水的水质进行调节.对麦饭石、白云石、石灰石、进口矿石的理化性能(包括成分、物相组成、孔隙率及孔径分布、表面形态)进行了分析,并在此基础上对比分析了4种矿石对反渗透淡化水的调质效果.结果表明,进口矿石经人为加工后孔隙增多,溶出速率明显变快,调质后出水的硬度、碱度、Mg2+质量分数均高出其他3种原矿石50%以上,但其出水pH值过高,Ca2+质量分数低于石灰石,与自来水相比仍有一定差距,未来应致力于研制一种比表面积大、溶解速率快、无需对淡化水酸化而直接调质的调质剂.
[Abstract]:Reverse osmosis seawater desalination has become an effective method to solve the freshwater crisis, but the chemical stability of reverse osmosis desalination water is poor, and the pipe network will be corroded in the process of use. As drinking water, there are certain health risks. The water quality of reverse osmosis desalination water is regulated by dissolved ore method. The physical and chemical properties (including composition, phase composition) of mai fan stone, dolomite, limestone and imported ore are studied. The porosity, pore size distribution and surface morphology were analyzed, and the effects of four ores on reverse osmosis desalination water were compared and analyzed. The results showed that the porosity of imported ore increased after artificial processing, and the dissolution rate became faster. The hardness, basicity and mg _ 2 content of the treated water are over 50% higher than those of the other three minerals, but the effluent pH value is too high and the Ca ~ (2 +) content is lower than that of limestone, which is still far from tap water. In the future, it is necessary to develop a kind of quencher with large specific surface area, high dissolution rate and no need for direct acidification of desalination water.
【作者单位】：浙江大学环境工程研究所;浙江至美环境科技有限公司;
【分类号】：P747;P579

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