分段式大回流碟管式反渗透系统设计在矿井水处理中的应用  

Application of segmented large reflux DTRO system in mine water treatment

作　　者：曹荣 汪庆喜 封云 王仁雷 CAO Rong;WANG Qingxi;FENG Yun;WANG Renlei(Huadian Electric Power Research Institute Co.,Ltd.,Hangzhou 310030,China;Shaanxi Huadian Yuheng Coal Power Co.,Ltd.,Yulin 719000,China)

机构地区：[1]华电电力科学研究院有限公司,杭州310030 [2]陕西华电榆横煤电有限责任公司,陕西榆林719000

出　　处：《工业用水与废水》2024年第5期57-60,95,共5页Industrial Water & Wastewater

基　　金：中国华电集团有限公司2023年科技项目(CHDKJ23-02-19)。

摘　　要：针对碟管式反渗透(DTRO)系统运行过程中普遍存在的膜污堵严重、产水不平衡、系统能耗高、设备稳定性差等问题,通过采取分段式大回流、段间增压等优化设计,提升了膜抗污堵性和系统运行可靠性。工程运行结果表明,分段式大回流DTRO装置脱盐率在99%以上,回收率可达50%,所产浓水的含盐量在100 g/L以上。系统整体工作稳定,连续长时间运行不会出现明显膜污堵和产水量下降情况,很好地解决系统出力及膜污染导致通量衰减等问题。同时对碟管式反渗透系统运行步序及清洗方案进行优化分析,并提出合理建议。In view of the problems commonly existed in the operation process of disk tube reverse osmosis(DTRO)system such as:serious membrane fouling and plugging,water production imbalance,high energy consumption,poor equipment stability and so on,optimization design of segmented large reflux and pressurization between segments,was adopted to enhance the resistance ability of the membrane to fouling and plugging,and improve the operational reliability of the system.The operation results of the project showed that,the desalination rate of the segmented large reflux DTRO device was above 99%,the recovery rate reached 50%,and the salt content of the produced concentrated water was above 100 g/L.The overall work of the system was stable,and there would be no obvious membrane fouling and plugging and water yield decline during continuous long time operation,the problems of system output and membrane flux decline caused by membrane fouling,were well solved.The operation step sequence and the cleaning scheme of the DTRO system were optimized and analyzed with reasonable suggestions put forward at the same time.

关 键 词：矿井水 碟管式反渗透 分段式大回流 膜污染 化学清洗 

分 类 号：X703.1[环境科学与工程—环境工程]