中空纤维反渗透膜高倍浓缩高盐废水的应用研究  

Research on the Application of Hollow Fiber Reverse Osmosis Membrane for High-power Concentration of High-salt Wastewater

作　　者：方小琴 周耀水 FANG Xiao-qin;ZHOU Yao-shui(Shanghai Jingyu Environmental Engineering Co.,Ltd.,Shanghai 200439,China)

机构地区：[1]上海晶宇环境工程股份有限公司,上海200439

出　　处：《环境科学导刊》2025年第1期86-91,共6页Environmental Science Survey

摘　　要：在低压操作条件下使用中空纤维反渗透膜,取代固有工艺中基于相转变过程的高能耗蒸发浓缩单元,实现了高盐废水的高倍浓缩。研究发现采用多级串联的反渗透工艺可以降低膜两侧渗透压差,在7 Mpa进水压力下将溶解性总固体(TDS)为6%~7%的浓盐水浓缩至14%以上,可以取代蒸发浓缩单元,或降低蒸发单元的处理规模,显著降低投资和运行成本。与MVR工艺相比,中空纤维反渗透膜工艺每年可节约运行费用约39.86万元,即15个月后可将多余投入成本回收。采用多级串联工艺系统的运行电耗仅为蒸发浓缩技术的58.6%,综合考量各项成本发现该工艺的平均运行费用降低了约25%。因此,本研究有望为高盐废水的浓缩处置提供一种高效、简单、低能耗的新方案。A hollow fiber reverse osmosis(RO)membrane was used under low-pressure operating system to replace the energyintensive evaporation and concentration unit based on the phase transition process in the inherent process,realizing the high concentration of high-salt wastewater.It was found that using a multi-stage reverse osmosis process can reduce the osmotic pressure difference between the two sides of the membrane,and concentrate the concentrated brine with total dissolved solids(TDS)of 6%to 7%to more than 14%under 7 MPa inlet pressure,which can replace the evaporation and concentration unit or reduce the treatment scale of the evaporation unit,significantly reducing the investment and operating costs.Compared with the MVR process,the hollow fiber reverse osmosis membrane process can save operating costs about 398,600 yuan(RMB)per year,with which excess investment costs can be recovered after 15 months.The operating power consumption of the system using the multistage series process is only 58.6%of that of the evaporation and concentration technology.Considering all the costs together,it was found that the average operating cost of the process was reduced by around 25%.Therefore,this research is expected to provide a new efficient,simple and low energy consumption solution for the concentration and disposal of high saline wastewater.

关 键 词：中空纤维反渗透膜 高盐废水 高倍浓缩 盐水渗透压 MVR工艺比对 

分 类 号：X703[环境科学与工程—环境工程]