反渗透系统节能减碳潜力研究

Research on energy saving and carbon reduction potential of reverse osmosis system

分析了火电厂反渗透系统主要电能和热能使用情况,研究了反渗透膜选型、高压泵选型、膜性能维护、系统运维优化、加热器应用以及多种浓水深度处理技术在反渗透系统运行过程中节能减碳的效果,结论如下:配置低压高通量反渗透膜和变频高压泵能够降低20%-30%系统能耗,维持反渗透膜状态良好并以最优模式运行反渗透系统能够降低7%-10%系统能耗;以余压能量回收技术、多段反渗透余能回用技术和纳滤余能回用技术为代表的反渗透浓水能量深度回用技术是未来反渗透系统节能减碳的主要研究方向。

In this paper,under the environment of carbon reduction,reverse osmosis system of thermal power plant as the research object,the reverse osmosis system mainly electricity and heat energy utilization is analyzed,the selection of the reverse osmosis membrane,high-pressure pump selection,membrane performance operational maintenance,system operation and maintenance optimization,heater application and various concentrated water advanced treatment technologies on energy saving and carbon reduction during the operation of the reverse osmosis system are studied.Results show that the energy consumption of the system can be reduced by 20%~30%with the configuration of low-pressure and high-flux RO membrane and variable-frequency high-pressure pump,and the energy consumption of the system can be reduced by 7%~10%by keeping the RO membrane in good condition and operating in the optimal mode;The deep energy recovery technology of reverse osmosis concentrated water represented by residual pressure energy recovery technology,multi-stage reverse osmosis residual energy recovery technology and nanofiltration residual energy recovery technology is the main research direction of reverse osmosis system energy saving and carbon reduction of in the future.