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首页> 外文期刊>Separation and Purification Technology >Application of the Al2O3-PVDF nanocomposite tubular ultrafiltration (UF) membrane for oily wastewater treatment and its antifouling research
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Application of the Al2O3-PVDF nanocomposite tubular ultrafiltration (UF) membrane for oily wastewater treatment and its antifouling research

机译：Al2O3-PVDF纳米复合管式超滤膜在含油废水处理中的应用及防污研究

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摘要

Nanocomposite tubular ultrafiltration (UF) membrane Al2O3 -PVDF was prepared by the phase-inversion method. Oily wastewater of Daqing oilfield was treated by PVDF and Al2O3-PVDF tubular ultrafiltration membranes, respectively. The membrane water permeations of the UF process were analyzed. Retentions of chemical oxygen demand (COD) and total organic carbon (TOC) were more than 90% and 98%, respectively. The results indicate that after UF treatment, oil content was below 1 mg/L, suspended solids content was below 1 mg/L, and solid particle median diameters were less than 2 mu m The quality of the permeation water met the requirement by oilfield injection or drainage. Fouled membranes and washed membranes were analyzed by scanning electron microscopy (SEM) and atomic force microscopy (AFM), and fouled membranes were backwashed with different solutions. Results show that the addition of nano-sized alumina particles improved membrane antifouling performance, and the flux recovery ratio of modified membranes reached 100% washing with 1 wt% of OP-10 surfactant solution (pH 10).
机译：采用相转化的方法制备了管形超滤纳米复合膜Al2O3-PVDF。采用PVDF和Al2O3-PVDF管式超滤膜处理大庆油田含油废水。分析了超滤工艺的膜水渗透率。化学需氧量（COD）和总有机碳（TOC）的保留率分别超过90％和98％。结果表明，超滤处理后，油含量低于1 mg / L，悬浮物含量低于1 mg / L，固体颗粒中值粒径小于2μm。渗透水水质满足油田注水要求。或排水。通过扫描电子显微镜（SEM）和原子力显微镜（AFM）分析污损的膜和清洗过的膜，并用不同的溶液反洗污染的膜。结果表明，纳米尺寸氧化铝颗粒的加入提高了膜的防污性能，改性膜的通量回收率达到1％（重量）的OP-10表面活性剂溶液（pH 10）洗涤100％。

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