铁基MOFs材料对高藻水超滤过程中膜污染的影响  

Effect of iron-based MOFs material on membrane fouling in ultrafiltration of algae-laden water

作　　者：瞿芳术 韦光梅 邓良 叶林雄 荣宏伟[1] 余华荣 杨枝盟 QU Fangshu;WEI Guangmei;DENG Liang;YE Linxiong;RONG Hongwei;YU Huarong;YANG Zhimeng(Department of Municipal Engineer,College of Civil Engineer,Guangzhou University,Guangzhou 510006,China)

机构地区：[1]广州大学土木工程学院,广州510006

出　　处：《膜科学与技术》2022年第3期135-144,共10页Membrane Science and Technology

基　　金：国家自然科学基金资助项目(51878211);广东省自然科学基金(2019A1515012232)。

摘　　要：超滤技术可以完全除藻,但是膜污染仍是限制超滤技术发展的核心问题.拟采用铁基金属有机骨架材料(MOFs)预处理控制藻类膜污染,考察了MIL-88A吸附以及MIL-88A活化过硫酸盐(PS)对高藻水超滤过程中膜污染的影响.研究结果表明,MIL-88A预处理对超滤过程中膜通量下降具有明显的缓解作用,MIL-88A投加量由0增加至25 mg/L时,末端比通量由0.17增加至0.46;MIL-88A预处理对不可逆膜污染的减缓效力约为50%,而随着MIL-88A质量浓度的增加,缓解不可逆污染的效力并未增强;MIL-88A预处理可以有效提高超滤处理高藻水过程中荧光组分的去除.此外,MIL-88A可以有效活化过硫酸盐,但无法有效控制高藻水超滤过程中的膜污染.Ultrafiltration(UF) technology can completely remove algae, but membrane fouling is still the core problem restricting the development of UF technology. In this paper, iron-based metal organic frameworks(MOFs) were used to control algae membrane fouling. The effects of MIL-88 A adsorption and MIL-88 A activated persulfate on membrane fouling during the algae-laden water treatment by ultrafiltration were investigated. The results showed that the pretreatment of MIL-88 A could significantly alleviate the decline of membrane flux during ultrafiltration. When the dosage of MIL-88 A increased from 0 to 25 mg/L, the terminal specific flux increased from 0.17 to 0.46;the mitigation effect of MIL-88 A pretreatment on irreversible membrane fouling was about 50%, but the mitigation effect did not increase with the increase of MIL-88 A concentration;MIL-88 A pre-treatment can effectively improve the removal of fluorescent components during the treatment of algae-laden water by ultrafiltration. Moreover, MIL-88 A can effectively activate persulfate, but it can not effectively control membrane fouling during the treatment of algae-laden water by ultrafiltration.

关 键 词：铁基金属有机骨架材料 高藻水 超滤 膜污染 

分 类 号：TQ028[化学工程] X524[环境科学与工程—环境工程]