共代谢降解感潮河道底泥多环芳烃的效能研究  

Study on the Efficacy of Co-metabolism in Degrading Polycyclic Aromatic Hydrocarbons in Tidal River Sediments

作　　者：吴阳 王宏杰 李龙[4] 刘杰 李朝祥 王锋 Wu Yang;Wang Hongjie;Li Long;Liu Jie;Li Chaoxiang;Wang Feng(Wuhan Planning Research Institute(Shenzhen Water Association),Shenzhen 518000,China;School of Civil and Environmental Engineering,Harbin Institute of Technology Shenzhen,Shenzhen 518055,China;State Key Laboratory of Urban Water Resources and Water Environment(Harbin Institute of Technology),Harbin 150090,China;Zhongshan Municipal Drainage Affairs Center,Zhongshan 528400,China;Shenzhen Wanmu Water Co.,Ltd.,Shenzhen 518055,China;School of Economics and Management,Harbin Institute of Technology(Shenzhen),Shenzhen 518055,China)

机构地区：[1]深圳市供排水行业协会,广东深圳518000 [2]哈尔滨工业大学(深圳)土木与环境工程学院,广东深圳518055 [3]城市水资源与水环境国家重点实验室(哈尔滨工业大学),黑龙江哈尔滨150090 [4]中山市市政排水事务中心,广东中山528400 [5]深圳市万木水务有限公司,广东深圳518055 [6]哈尔滨工业大学(深圳)经济管理学院,广东深圳518055

出　　处：《广东化工》2024年第19期155-157,133,共4页Guangdong Chemical Industry

基　　金：深圳市科技创新委员会可持续发展专项(KCXFZ202002011006362)。

摘　　要：感潮河道由于受潮汐影响,上覆水盐度波动大且区域差异明显,因此,在应用微生物共代谢降解感潮河道底泥中多环芳烃(polycyclic aromatic hydrocarbons,PAHs)时,考察不同盐度对PAHs降解的影响具有一定的实际意义。本研究采用乙酸钠耦合邻苯二甲酸为共代谢底物,考察上覆水0‰~40‰盐度范围对PAHs降解,底泥理化性质(pH,ORP)及底泥硫代谢(酸可挥发性硫化物(acid volatile sulfide,AVS),SO_(4)^(2-))的影响。研究结果表明:在上覆水盐度波动从10‰增大到50‰时,底泥PAHs降解存在较大差异,低盐环境更利于PAHs的降解,高盐度上覆水易导致微生物共代谢过程中底泥AVS和SO_(4)^(2-)的富集。本研究探讨了感潮河道盐度对生物共代谢法降解底泥PAHs污染效能的影响,为感潮河道不同盐度波动条件下底泥难降解有机物去除研究提供理论基础。Due to the tidal influence of tidal rivers,the salinity of the overlying water fluctuates greatly and has significant regional differences.Therefore,it is of practical importance to investigate the effects of different salinity on the degradation of polycyclic aromatic hydrocarbons(PAHs)in the sediment of tidal rivers when applying microbial co-metabolism.In this study,sodium acetate coupled with phthalic acid was used as the co-metabolizing sediment to investigate the effects of 0‰~40‰salinity of the overlying water on the degradation of PAHs,the physicochemical properties(pH,ORP)and the sulfur metabolism(acid volatile sulfide(AVS),SO_(4)^(2-))of the sediment.The results of the study showed that there were large differences in the degradation of PAHs in the sediment when the salinity fluctuation of the overlying water increased from 10‰to 50‰.The low salinity environment was more favorable for the degradation of PAHs,and the high salinity overlying water was prone to lead to the enrichment of AVS and SO_(4)^(2-)in the sediment during the process of microbial co-metabolism.In this study,we investigated the effect of salinity on the degradation efficiency of PAHs pollution in substrate by biological co-metabolism in tidal rivers,and provided a theoretical basis for the study of the removal of difficult organic matter in substrate under different salinity fluctuation conditions in tide-sensitive rivers.

关 键 词：感潮河道 底泥多环芳烃 盐度 共代谢 

分 类 号：X524[环境科学与工程—环境工程] X508