超滤技术处理高盐卤水中试实验  

Pilot treatment of high salt brine by ultrafiltration technology

作　　者：戴海平[1] 胡宁沙 吴秀丽[1] 柯永文[1] 尹艳梅[1] 迟庆峰[3] 刘建路[3] 潘玉强[3] 

机构地区：[1]天津膜天膜科技股份有限公司,天津300457 [2]天津工业大学材料科学与工程学院,天津300387 [3]山东海化集团有限公司,山东潍坊262737

出　　处：《天津工业大学学报》2015年第5期6-11,共6页Journal of Tiangong University

基　　金：用于海水淡化与浓海水(卤水)精制工程高性价比超滤膜及装备开发项目(CXSF2014-24)

摘　　要：采用"自清洗过滤器+超滤系统"组合技术处理山东海化集团高盐度地下卤水,作为纳滤单元的预处理工艺.采用天津膜天膜科技股份有限公司的外压式中空纤维超滤膜,进行膜通量和清洗频率2种工艺参数的优化,根据实验数据和理论数据分析得到了CEB清洗对膜污染控制效果,并且进行小试,优化了清洗药剂的选择.经过一段时间试运行,结果表明:膜通量为40 L/(m2·h)时为最佳膜运行通量,膜设备在此通量下可以长期稳定运行,并且回收率始终保持95%左右;CEB清洗效果较好;超滤出水未检测出藻类,说明对藻类去除效果较好,超滤出水浊度基本在0.1 NTU以下,出水SDI15小于3,平均出水TOC为11.7 mg/L,满足后续纳滤进水要求.＂Self-cleaning filter ＋ ultrafihration system＂ combination technology as a pretreatment process of nanofiltration units was used to treat high salinity of underground brine from ShanDong Ocean Chemical Group Ltd. The technological parameters of membrane flux, washing frequency are optimized by using external pressure type hollow fiber ultrafiltration membranes from Tianjin Motimo Membrane Technology Co Ltd. The selection of effect of CEB cleaning for controlling tl J membrane fouling is d：scussed according to the theoretical and experimental data analysis. The cleaning agent is optimized. The results showed that membrane flux of 40 L/（m^2·h） is the best membrane flux, under this flux, the membrane equipment can keep a long-term stable operation and the water recovery rate is stable around 95% ; CEB cleaning effect is good, the equipment has a high stability, and recovery ：ate is stable for a long time. No algae is detected in the UF effluent, which show the combination technology has a good effect on algae removal. The effluent turbidity water was under 0.1 NTU, SDI15 was less than 3, the average effluent TOC was 11.7 mg/L, this satifies the requirements of subsequent nanofihration into the water.

关 键 词：超滤 高盐卤水 跨膜压差 膜比通量 水处理 

分 类 号：TS102.54[轻工技术与工程—纺织工程] K703[轻工技术与工程—纺织科学与工程]