不同构型人工湿地-微生物燃料电池对废水中对氯苯酚的净化效果及产电性能的影响  

Effect of the constructed wetland-microbial fuel cells with different configurations on the purification of 4-chlorophenol in wastewater and the power generation performance

作　　者：杨佩汶 林毅 林华[1,2] 肖玲 甘淑萍 王义安 YANG Peiwen;LIN Yi;LIN Hua;XIAO Ling;GAN Shuping;WANG Yian(College of Environmental Science and Engineering,Guilin University of Technology,Guilin 541000,China;Guangxi Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Areas,Guilin University of Technology,Guilin 541000,China)

机构地区：[1]桂林理工大学环境科学与工程学院,桂林541000 [2]桂林理工大学,广西岩溶地区水污染控制与用水安全保障协同创新中心,桂林541000

出　　处：《环境工程学报》2023年第2期507-516,共10页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金面上资助项目(52070051,52170154);广西科技计划项目(2020GXNSFAA297256);广西高等学校高水平创新团队及卓越学者计划资助(桂财教函[2018]319);广西八桂学者和特聘专家项目。

摘　　要：构建了堆叠构型(CW-MFC-A)、多级构型(CW-MFC-B)和模块化构型(CW-MFC-C)的中试人工湿地-微生物燃料电池(CW-MFC),且探究了不同构型CW-MFC在不同对氯苯酚(4-CP)浓度(0、20、40和60 mg·L^(-1))下对废水的净化效果、产电性能和李氏禾生理生化响应的影响。结果表明,CW-MFC-A、CW-MFC-B和CW-MFC-C在40 mg·L^(-1)4-CP下具有最好的废水净化效果,在60 mg·L^(-1)4-CP下具有最高的产电性能,CW-MFC-C比CW-MFC-A和CW-MFC-B具有更好的4-CP去除效果(66.15%)、更高的产电电压(249.0 mV)和功率密度(96.9 mW·m^(-3))。3种构型CW-MFC内李氏禾的生理生化响应指标均随4-CP胁迫浓度增加而变差。同时,CW-MFC-C在对应更高产电性能的4-CP浓度下(60 mg·L^(-1)),其李氏禾株高和生物量分别为45.30 cm和0.237 g·株-1,其叶片的可溶性蛋白含量、叶绿素含量、丙二醛(MDA)含量、气孔导度(Cleaf)、净光合速率(Pn)、蒸腾速率(Tr)和胞间CO_(2)浓度(CO_(2)In)分别为6.81 g·L^(-1)、3.67 mg·g^(-1)、0.24μmol·L^(-1)、0.02 mol·(m^(2)·s)^(-1)、1.20μmol·(m^(2)·s)^(-1)、0.40 mmol·(m^(2)·s)^(-1)和852.24 mg·m^(-3),其受4-CP胁迫影响程度均小于CW-MFC-A和CW-MFC-B。以上所构建的模块化构型CW-MFC可为治理4-CP废水提供参考。Pilot-scale constructed wetland-microbial fuel cell(CW-MFC) was constructed in stacked,multistage and modular configurations,and their effects the on power generation performance,wastewater purification and physiological and biochemical response of Leersia Hexandra Swartz at different concentrations of 4-chlorophenol (0,20,40 and 60 mg·L^(-1)) were studied.The results showed that for the CW-MFC-A,CW-MFC-B,and CW-MFC-C,the highest removal effect occurred at 40 mg·L^(-1)4-CP,and the highest power generation performance occurred at 60 mg·L^(-1)4-CP.Simultaneously,the CW-MFC-C reactor had better 4-CP removal effect(66.15%),higher power production voltage(249.0 mV) and power density(96.9 mW·m^(-3)) than CW-MFC-A and CW-MFC-B.The physiological and biochemical response of L.Hexandra in all reactors became worse with increasing 4-CP stress concentration.Meanwhile,at the 4-CP concentration of 60 mg·L^(-1)with higher power-producing performance,the plant height and biomass in CW-MFC-C were 45.30 cm and 0.237 g·plants-1,respectively,the soluble protein content,chlorophyll content,MDA content,Cleaf,Pn,Tr,and CO_(2)In of its leaves were 6.81 g·L^(-1),3.67 mg·g^(-1),0.24μmol·L^(-1),0.02 mol·(m~2·s)^(-1),1.20μmol·(m~2·s)^(-1),0.40mmol·(m~2·s)^(-1)and 852.24 mg·m^(-3),respectively,and the extent of 4-CP stress in CW-MFC-C was less than that in CW-MFC-A and CW-MFC-B.Furthermore,the design of the L.Hexandra CW-MFC with modular configuration can provide a reference for the governance of 4-CP contaminated wastewater.

关 键 词：构型 人工湿地-微生物燃料电池 对氯苯酚 废水净化 产电性能 李氏禾 

分 类 号：X703.1[环境科学与工程—环境工程]