以碟管式纳滤加超滤膜组合工艺深度处理微污染高含盐地表水，探究了不同操作条件对超滤和纳滤膜分离性能的影响，并检测进出水水质状况。中试结果表明，浸没式超滤膜在运行4 h后产水通量下降15%，气洗1 h后可恢复至最佳水平；碟管式纳滤膜最佳运行压力为1 MPa，此时回收率和脱盐率分别为70%和55%左右；在最佳运行压力下，碟管式纳滤膜系统回收率和脱盐率随进料液溶质浓度增大而减少，且具有较高的离子选择性透过性；超滤-纳滤组合工艺可有效去除水中典型嗅味物质2-甲基异莰醇（2-MIB）和土臭素（GSM），产水中浊度、氯化物、硫酸盐及硬度含量远低于常规水处理工艺，具有更高的安全性。

The disk-tube nanofiltration-ultrafiltration membrane technology is utilized for advanced treatment of micro-polluted and high-salinity surface water, while the influences of different operating conditions on the separation performance of ultrafiltration and nanofiltration membranes are evaluated, and the quality of inflow and outflow water is detected.Pilot study results show that the water flux of submerged ultrafiltration membrane decreases by 15% after 4 hours of operation and recovers to the optimal level after air washing for 1 hour.The optimum operating pressure of disk-tube nanofiltration membrane is 1 MPa, under which the recovery and desalination rates are about 70% and 55%, respectively, and will drop with the increase of solute concentration in the feed liquid.The system shows a high ion selective transmittance.This ultrafiltration-nanofiltration membrane technology can effectively remove 2-methylisoborneol (2-MIB) and geosmin (GSM) from water.The turbidity, and the contents of chloride, sulfate and hardness in the produced water are much lower than that in conventional water treatment process, showing higher security.

赵信新(1993-),男,硕士生