以钙钛矿型粉末（CT powder）作为无机添加剂与聚偏氟乙烯（PVDF）共混，采用相转换法合成了有机－无机共混超滤膜。利用平板错流超滤装置对超滤膜进行纯水通量、油水乳化液截留以及抗污染性能测试；通过扫描电子显微镜（SEM）观察了膜的表面形貌、断面结构和污染物分布情况；通过污水实验，测试CT／PVDF超滤膜的抗污染性能及自净性能。结果表明：当添加质量分数为1％CT powder时，可以较大地提高PVDF超滤膜的通量，减缓膜通量下降率，提高其抗污染性能和自净能力。且在油水分离实验中，渗透液水质，如浊度、油含量和化学需氧量等，均达国家排放标准。%The organic-inorganic blended ultrafiltration membrane is synthesized by the phase transforma-tion method, which mixed perovskite powder (CT powder) with polyvinylidene fluoride(PVDF).The pure water flux , oil rejection performance and antifouling property of ultrafiltration membrane were tested by the plate cross-flow ultrafiltration device .The surface morphology , cross-sectional morphology and the pollutants'distribution of membrane were detected by using scanning electron microscope ( SEM ) .The anti-fouling property and self-cleaning performance of CT/PVDF ultrafiltration membrane were tested by sewage experiments .The results show that adding 1%CT powder can greatly improve the flux of PVDF ultrafiltration membrane , slow down the rate of membrane flux decline and improve its anti-fouling prop-erty and self-purification .In the oil-water separation experiment , the quality of penetrating fluid , such as turbidity , oil content and chemical oxygen demand are up to national emission standards .
展开▼
