面向废水深度净化的氧化石墨烯膜过滤技术

Membrane filtration technology as a technology with high efficiency, low energy consumption and less generation of new pollutants, has been widely used in the deep purification and regeneration of industrial wastewater. Traditional organic membranes have beed disadvantaged by insufficient oxidation resistance, harsh use conditions, and difficult membrane fouling control in the deep purification of industrial wastewater. At the same time, the resultant concentrated organic and inorganic salts in the membrane filtration process also hinders the resource utilization of the concentrated streams. As an emerging membrane material, graphene oxide membrane has better oxidation resistance and hydrophilicity. Meanwhile, its preparation cost is relatively low, and the separation characteristics of organic matter and inorganic salt is better. It is expected to be widely used in the deep purification and reuse of industrial wastewater. Based on the literature which has been read, this article summarizes the preparation and performance characteristics of graphene oxide membranes, as well as the current research status and problems by using graphene oxide membrane filtration technology in industrial wastewater deep purification, such as the stability of materials and membrane fouling control, etc. Finally, it is suggested that graphene oxide membrane filtration technology should gradually achieve application amplification in the future, and exploring its role in deep purification of industrial wastewater, realization of water and resource reuse, and nearly "zero discharge" water treatment process.