废膜炭吸附去除废水中典型污染物的性能研究

Performance Study of Carbon Adsorption of Spent Membranes for the Removal of Typical Pollutants in Wastewater

刘瑞娟 杨兰 苗时雨 李艳红 安晓强 兰华春

Ruijuan LIU Lan YANG Shiyu MIAO Yanhong LI Xiaoqiang AN Huachun LAN

桂林理工大学 环境科学与工程学院, 广西 桂林 541004 清华大学 水质与水生态中心, 北京 100084 苏州科技大学 环境科学与工程学院, 江苏 苏州 215009

School of Environmental Science and Engineering，Guilin University of Technology，Guilin Guangxi 541004，China Center for Water and Ecology，Tsinghua University，Beijing 100084，China School of Environmental Science and Engineering，Suzhou University of Science and Technology，Suzhou Jiangsu 215009，China

在膜法处理污水过程中，广泛使用有机聚合物分离膜。但是，由于不可逆膜污染的发生，需要更换性能衰减后膜，导致大量废膜的生成，因此实现废聚合物膜的再利用具有重要的经济和环境价值。以污水处理厂的废旧中空纤维膜为模板，通过简单的热解重塑反应制备了一种具有超微孔?介孔?大孔结构的炭材料；结合炭材料的结构表征，对活性炭的吸附性能进行了分析，研究了其吸附水中典型芳香烃类和抗生素类污染物的动力学和热力学过程。结果表明，具有分级孔结构的废膜炭对芳香烃类有机污染物的去除能力高于商业炭，而对环丙沙星、卡马西平、磺胺嘧啶等抗生素的吸附性能低于商业炭。

Organic polymer membranes have been widely used for wastewater treatment.Due to occurrence of irreversible membrane contamination,the replacement of the membrane after the performance decay leads to the generation of a large number of discarded membranes.How to realize the reuse of these waste polymer films has important economic and environmental value.In this study,a carbonaceous material with both ultramicroporous,mesoporous,and macroporous structures was prepared by a simple pyrolysis remodeling reaction using waste hollow fiber membranes as a template.The differences in the adsorption performance of the waste membrane?derived activated carbon and commercial activated carbon were investigated based on the structural characterizations of the carbonaceous materials.The kinetic and thermodynamic processes for the adsorption removal of typical aromatic hydrocarbon organic contaminants and antibiotics from water were investigated.It was found that the the waste membrane carbon with hierarchical pore structure had a higher removal capacity for aromatic hydrocarbon organic pollutants than commercial carbon,while the adsorption performance for antibiotics such as ciprofloxacin,carbamazepine and sulfadiazine was lower than that of commercial carbon.

国家重点研发计划项目(2019YFA0705801)

10.12422/j.issn.1006-396X.2024.02.001