1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, China; 2. Sinopec Research Institute of Safety Engineering, Qingdao 266000, China; 3. Water Supply Branch, Shengli Petroleum Administration Co., Ltd., Sinopec Group, Dongying 257000, China; 4. North China Petrochemical Company, PetroChina Company Limited, Renqiu 062552, China
Abstract: 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, 于辉, 刘欣, 张晓敏, 许家晟, 陈爽. 碟管式纳滤膜组合工艺处理高含盐水中试研究[J]. 现代化工, 2021, 41(12): 203-207.
ZHAO Xin-xin, YU Hui, LIU Xin, ZHANG Xiao-min, XU Jia-sheng, CHEN Shuang. Pilot study on disk-tube nanofiltration membrane combining process for treatment of micro-polluted and high-salinity surface water. Modern Chemical Industry, 2021, 41(12): 203-207.
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