铁电解活化过一硫酸盐耦合低压膜工艺处理含抗生素医药废水研究  

Research on the Treatment of Pharmaceutical Wastewater Containing Antibiotics by Iron Electrolysis Activated Peroxymonosulfate Coupled with Low-Pressure Membrane Process

作　　者：洪流 杨武鹏 张开明[2] 林锦棠 陈锋 杜星 HONG Liu;YANG Wupeng;ZHANG Kaiming;LIN Jintang;CHEN Feng;DU Xing(Foshan Municipal Technical Service Center for Soil and solid Waste Pollution Prevention and Control,Foshan 528000,China;School of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou 510006,China;Foshan Environmental Protection Investment Co.,Ltd,Foshan 528000,China;Foshan Water Affairs Group Co.,Ltd,Foshan 528000,China)

机构地区：[1]佛山市土壤和固体废物污染防治技术服务中心,广东佛山528000 [2]广东工业大学土木与交通工程学院,广东广州510006 [3]佛山市环境保护投资有限公司,广东佛山528000 [4]佛山市水业集团有限公司,广东佛山528000

出　　处：《水处理技术》2022年第1期33-37,共5页Technology of Water Treatment

基　　金：国家自然科学基金项目青年基金(51808131);广东省自然科学基金(2018A030310569);广东工业大学青年百人计划项目(220413227)。

摘　　要：采用电解活化过一硫酸盐(PMS)原位电氧化/电絮凝体系(EC)耦合低压膜(LPM)工艺(EC-PMS-LMP)去除模拟医药废水中的抗生素-磺胺二甲基嘧啶(SMZ)及有机物(COD)。结果表明,优化工艺条件为:pH=7.0,电流0.4 A,PMS与电解产生Fe^(2+)的摩尔比为1:1,对SMZ的去除率达100%。对COD的去除效果有限,但原水中SS含量和COD对SMZ去除效果的影响不大。电子顺磁共振光谱(EPR)证明了对于SMZ和有机物的降解,起主要作用是活化PMS产生的硫酸根自由基(SO_(4)^(-)·)和羟基自由基(HO·)。扫描电子显微镜(SEM)证明电氧化-絮凝过程有利于膜表面形成疏松多孔的滤饼层,缓解膜污染。该耦合工艺可为处理抗生素类医药废水的处理提供技术支撑。In current work,electrolytic activated persulfate(PMS)in-situ electro-oxidation/flocculation system(EC-PMS)coupled with a low-pressure membrane(LPM)process(EO/EC-PMS-LMP coupled process for short)was investigated to remove antibiotic-sulfamethazine and COD from the simulated pharmaceutical wastewater.The results indicated that the removal rate of SMZ could reach 100%under the optimal operation conditions with pH=7.0,I=0.4 A,the molar ratio of PMS to Fe^(2+)produced by electrolysis is 1:1.It was found that the removal efficiency of this coupling process for COD was limited,but the initial content of SS and COD on the removal effect of SMZ was not significant.Additionally,electron paramagnetic resonance spectroscopy(EPR)demonstrated that the sulfate radicals(SO_(4)^(-)·)and hydroxyl radicals(HO·)produced during PMS activation,playing a major role in the degradation of SMZ and organic matter.Scanning electron microscopy(SEM)proved that the EO/EC pretreatment enables the formation of a loose and porous filter cake layer and migrating membrane fouling.This coupling process is capable of treating pharmaceutical wastewater containing antibiotics with wide application prospects.

关 键 词：电氧化/电絮凝 医药废水 抗生素去除 过一硫酸盐 低压膜 

分 类 号：X703.1[环境科学与工程—环境工程]