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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.
Reverse osmosis desalination has become an effective way to solve the freshwater crisis, but the chemical stability of reverse osmosis desalinated water is poor, the use of corrosion of pipe network, as drinking water there is a certain health risk. The use of dissolved ore method of reverse osmosis desalination The physicochemical properties (including composition, phase composition, porosity and pore size distribution, surface morphology) of the maifanite, dolomite, limestone and imported ore were analyzed and compared on the basis of that 4 kinds of ore on the reverse osmosis desalinated water quenching effect.The results show that the imported ore by the processing of pores increased, the dissolution rate was significantly faster, after quenching the effluent hardness, alkalinity, Mg2 + mass fraction higher than the other three The original ore more than 50%, but its effluent pH value is too high, Ca2 + content is lower than the limestone, compared with tap water is still a gap, the future should be committed to the development of a large surface area, dissolution rate, without desalination acidification The direct quenching and tempering agent.