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类石墨烯负载铜铁活化PMS体系缓解陶瓷膜污染

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第21期 页码: 68-76 栏目: 出版日期: 2025-11-01
Title:
Graphene-like Loading Copper-Iron Activated Peroxymonosulfate to Alleviate Ceramic Membrane Fouling
作者:
陈千里1,2， 钟玲玲1,2， 宋姿1,2， 王倩1,2， 张新波1,2
（1.天津城建大学环境与市政工程学院 基础设施防护和环境绿色生物工艺联合研究中心，天津 300384；2.天津城建大学 天津市水科学与技术重点实验室，天津 300384）
Author(s):
CHEN　Qian-li1，2， ZHONG　Ling-ling1，2， SONG　Zi1，2， WANG　Qian1，2， ZHANG　Xin-bo1，2
（1. Joint Research Center for Infrastructure Protection and Environmental Green Biotechnology， School of Environmental and Municipal Engineering， Tianjin Chengjian University， Tianjin 300384， China； 2. Tianjin Key Laboratory of Water Science and Technology， Tianjin Chengjian University， Tianjin 300384， China）
关键词:
陶瓷膜;  膜污染;  腐殖酸;  类石墨烯;  过一硫酸盐（PMS）
Keywords:
ceramic membrane;  membrane fouling;  humic acid;  graphene-like;  peroxymonosulfate
摘要:
膜污染是影响陶瓷膜应用的瓶颈因素之一，尤其以腐殖酸（HA）为代表的有机污染物容易引起膜污染，而增加预处理被认为是提高膜处理效果、缓解膜污染的有效途径。合成了类石墨烯负载铜铁（CuFe@CP）材料，用于活化过一硫酸盐（PMS）并作为陶瓷膜过滤的预处理，研究了其催化氧化去除有机物和减缓膜污染的双重功效，同时通过污染模型拟合推断在单独膜过滤、PMS、CuFe@CP/PMS体系下的膜污染形式。结果表明，CuFe@CP/PMS体系作为预处理时，陶瓷膜进、出水HA浓度分别降低了89%、95%。通过膜污染模型拟合分析发现，膜污染以中间堵塞和滤饼层污染为主，完全堵塞和标准堵塞得到了有效缓解。与单独陶瓷膜过滤工艺对比，具备预处理的膜过滤工艺的跨膜压差整体降低了2.05 kPa，平均膜通量恢复率提高了44%，经过6次循环后，可逆污染和不可逆污染分别从11.48%和36.97%降低到6.41%和6.92%。综上，CuFe@CP/PMS-陶瓷膜组合工艺能够有效减轻HA引起的膜污染。
Abstract:
Membrane fouling is one of the bottleneck factors affecting the application of ceramic membranes, especially organic pollutants represented by humic acid (HA), which can easily cause membrane fouling. To address the issue of membrane fouling, adding pretreatment is considered an effective way to improve the membrane treatment efficiency and alleviate membrane fouling. In this study, graphene-like loaded copper-iron (CuFe@CP) materials were synthesized for the activation of peroxymonosulfate (PMS) as a pretreatment measure for ceramic membrane filtration. And the dual roles of catalytic oxidation for the removal of organics and mitigation of membrane fouling were investigated, as well as the form of membrane fouling under the individual membrane filtration, PMS, and CuFe@CP/PMS systems were inferred by fouling model fitting. The results showed that, when the CuFe@CP/PMS system was used as pretreatment, the HA concentration in the ceramic membrane influent and effluent was reduced by 89.0% and 95.6%, respectively. The model fitting analysis showed that the membrane fouling was dominated by intermediate clogging and filter cake layer contamination, and complete clogging and standard clogging were effectively mitigated. Compared to the independent ceramic membrane process, the transmembrane pressure in the membrane filtration process with pretreatment showed an overall reduction of 2.05 kPa, and the membrane flux recovery rate increased averagely by 44%. After six cycles, reversible and irreversible pollution was reduced from 11.48% and 36.97% to 6.41% and 6.92%, respectively. In conclusion, the combination of CuFe@CP/PMS and ceramic membrane can alleviate the membrane fouling caused by HA.

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更新日期/Last Update: 2025-11-01