普通反渗透复合膜处理高含盐量高硬度苦咸水实验研究

Experimental Study on Processing Blackish Water with High Salinity and High Hardness by Ordinary Reverse Osmosis Composite Membrane

针对南疆铁路沿线地下水极高硬度及含盐量的水质特征，实验考察了采用普通反渗透复合膜处理其水质的可行性，考察了该膜的分离性能随操作压力、温度、运行时间等变化的影响及膜的运行稳定性，确定了最佳运行条件，即：回收率为：40％～60％，操作压力1．3～1．6MPa，温度10-25℃．结果表明：采用普通反渗透复合膜来处理高含盐量高硬度苦咸水是可行的也是有效的．

According to the characteristics of groundwater with high hardness and salinity along Nanjiang railway,desalination experiments of blackish water were carried out by using BW30. 4040 ordinary reverse osmosis membrane. The effects of the desalination tine and the temperature of blackish water as well as the pressure on the separation performance and stability of reverse osmosis membrane were investigated. The best operation parameter has been determined,namely,recovery rate is 40-60%,operating pressure is 1.3 -1.6 MPa and temperature is 10-25℃. The results show that it is reasonable and effective to desalinate the high concentration blackish water with ordinary reverse osmosis composite membrane.