【摘要】 针对目前造纸废水处理的困难,提出使用膜分离技术深度处理造纸废水。以氧化石墨烯（GO）为原料,在经修饰的陶瓷管基底上采用浸渍法制备了氧化石墨烯膜。通过X射线衍射仪（XRD）、原子力显微镜（AFM）、扫描电子显微镜（SEM）等分析手段对膜材料和膜进行了表征,结果显示GO为二维片状材料,成膜性能良好,膜的表面均匀连续,无明显缺陷。并将其用于模拟废水脱盐及真实造纸废水深度处理,具有良好的效果。在模拟体系中,膜通量可以达到4.27kg/m²h,脱盐率为80%;对造纸废水中Mg²⁺、Ca²⁺及SO₄^2-离子的截留率分别可以达到71%、70%和54%,通量为3.10kg/m²h,处理真实造纸废水20h以上,仍保持良好的分离性能,具有较好的稳定性。更多还原

【Abstract】 Graphene oxide membrane was fabricated on the modified ceramics tube through dip-coating method.Graphene oxide and graphene oxide membrane were characterized by X-ray diffraction（XRD）,atomic force microscopy（AFM） and scanning electron microscope（SEM）. Finally the prepared membrane was used for Na₂SO₄ salts solution separation and papermaking wastewater advanced treatment. The experimental results show that the flux can reach 4. 27kg/m²h and desalination rate is 80%,when 1500 mg/L Na₂SO₄ salt solution was separated at room temperature under a working pressure of 0. 8MPa. However,the flux is 3. 1kg/m²h and the interception rates of Mg²⁺、Ca²⁺and SO₄^2- were 71%,70% and 54%,respectively,when used in papermaking wastewater treatment. And good separation performance and stability were still maintained when used in papermaking wastewater treatment for more than 20 h.更多还原