采用反渗透膜分离技术对PVC离心母液进行处理实验，对PVC母液进行了2次RO膜分离，第一次通过RO膜的渗透液电导为42.3 µs；考察了渗透液第二次通过RO膜时压力对膜通量以及电导的影响，分析得压力为1MPa时，渗透液电导为最低的7.37 µs。在确定了压力参数后，考察了PVC母液第二次经过RO膜分离运行时间对膜通量、渗透液电导及COD的影响。结果表明，出水达到排放标准，经进一步处理可回用于生产。

 Applying reverse osmosis twice for PVC centrifugal mother liquor in the pilot test, the filtrate conductance of the first step separation of reverse osmosis was 42.3µs。The effect of pressure on membrane flux and filtrate conductance in the second reverse osmosis process was analyzed. It showed that the lowest outcome filtrate conductance was 7.37 µs when the pressure was 1MPa. After determining the parameter of pressure, the effect of runtime on membrane flux, filtrate conductance, COD in the second reverse osmosis process was analyzed. The test results showed the filtrate reached discharge standards of wastewater, and it could also be reused in production through advanced

[1] 伍桂松.我国聚氯乙烯市场分析及预测[J].化工技术经济, 2000, 18 (5) : 20-22.
[2] Jaksland C，Rasmussen E，Rohde T. A new technology for treatment of PVC waste [J]. Waste Management, 2000, 20: 463-467.
[3] 刘岭梅. 悬浮聚氯乙烯工程技术进展[J]. 化工生产与技术, 1999, 1:33-35.
[4] Carroll W F Jr, Berger T C, Borrelli F E, et al. Characterization of emissions of dioxins and furans from ethylene dichloride ( EDC), vinyl chloride (VCM) and polyvinylchloride (PVC) manufacturing facilities in the United States. I. Resin, treated wastewater, and ethylene dichloride[J]. Chemosphere, 1998, 37 (9-12):1957-1972.
[5] Jiu-Qing Liu, Zhen-Liang Xu, Xin-Hai Li, Yao Zhang, et al. An improved method to prepare high separation performance PA/PVDF hollow fiber composite NF membranes[J]. Separation and Purification Technology, 2007,50:53-60.
[6] 国家环境保护局. GB11914-89, 水质化学需氧量的测定重铬酸钾法[S]. 北京；中国环境出版社, 2000, 234-236.