基于UiO-66强化的膜生物反应器化工废水处理性能-《福建理工大学学报》

文章信息/Info

Title:: Performance Evaluation of Chemical Wastewater Treatment Using a UiO-66-Enhanced Membrane Bioreactor

摘要:: 本研究评估了Zr基金属有机框架材料UiO-66对膜生物反应器(MBR)处理化工废水的强化效果。通过设置传统MBR(R1)、PAC强化MBR(R2)和UiO-66强化MBR(R3)三组平行对照系统，系统考察其在污染物去除、微生物活性维持及膜污染控制方面的表现。结果表明，UiO-66具有规则微孔结构和稳定Zr–O骨架，比表面积高于PAC。长期运行中，R3系统COD和氨氮去除率分别达98.3%和98.4%，优于R1和R2。同时，R3系统MLVSS/MLSS稳定维持在0.89以上，优势菌群富集效果更好，跨膜压差增长速率最低，膜清洗周期显著延长。研究表明，UiO-66可显著提升MBR处理化工废水的运行性能和抗污染能力。

Abstract:: This study evaluated the enhancement effect of the Zr-ba＜x＞sed me＜x＞tal–organic fr＜x＞amework UiO-66 on the performance of a membrane bioreactor(MBR)treating chemical wastewater. Three parallel systems were established, including a conventional MBR(R1), a powdered activated carbon-enhanced MBR(R2), and a UiO-66-enhanced MBR(R3), to investigate pollutant removal, maintenance of microbial activity, and membrane fouling mitigation. The results showed that UiO-66 possessed a well-defined microporous structure and a stable Zr–O fr＜x＞amework, with a specific surface area higher than that of PAC. During long-term operation, the R3 system achieved COD and ammonium nitrogen removal efficiencies of 98.3% and 98.4%, respectively, outperforming both R1 and R2. In addition, the MLVSS/MLSS ratio in R3 remained stable above 0.89, accompanied by improved enrichment of dominant microbial communities. The R3 system also exhibited the lowest rate of transmembrane pressure increase and a significantly prolonged membrane cleaning cycle. These findings demonstrate that UiO-66 can effectively improve the operational performance and anti-fouling capacity of MBRs for chemical wastewater treatment