【摘要】 海水淡化是解决淡水危机的主要方法之一,但由于海水的硬度、浊度和总固溶物含量均非常高,因而导致淡化水的能耗量和成本较高.本文采用纳滤膜法处理海水,考察纳滤膜分离性能随操作压力、操作温度、时间、水回收率等变化的影响及纳滤膜运行的稳定性.结果表明,采用纳滤膜技术可以降低海水的硬度和总固溶物的含量,减少结垢与污染,提高水回收率,有望实现海水淡化成本的进一步降低.更多还原

【Abstract】 Seawater desalination,a major technology for solving the problem of water shortage,has not been widely accepted over the world just because of its high energy and investment.Desalination experiments of seawater were carried out by using HL1812 nanofiltration membrane.The effects of the Desalination time and the temperature of seawater as well as the pressure on the separation performance and stability of nanofiltration membrane were investigated.Lower cost can be obtained by utilizing nanofiltration as a pretreatment for the removal of hardness and TDS.更多还原