反渗透装置中最重要的给水预处理方法之一是加入阻垢剂,来防止水中难溶盐形成水垢.RO市场上每年都会推出新的阻垢剂.RO装置的技术人员在使用这些阻垢剂前要对其性能进行实验室评估,研究阻垢剂所可能达到的最大回收率及正确的加药量.文章对阻垢剂的实验室快速评价技术进行了研究.使RO装置以周期性浓缩的全循环模式运行,以逐渐提高RO装置浓水侧的结垢趋势,并测定其结垢速率.选择了新型阻垢剂PTP-2000和传统阻垢剂SHMP,对其阻CaCO3的性能进行了比较研究.结果表明,周期性浓缩的全循环是一种快速、方便、可靠的阻垢剂评价技术.
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