微电解耦合人工湿地去除畜禽废水中SM2  

Micro-electrolysis Coupled with Constructed Wetland for Removal of Sulfamethazine from Livestock Wastewater

作　　者：王万金 张漓杉 钟山[2,3] 朱佳燕 张梅芳 陈运妹 肖桂芳 WANG Wan-jin;ZHANG Li-shan;ZHONG Shan;ZHU Jia-yan;ZHANG Mei-fang;CHEN Yun-mei;XIAO Gui-fang(College of Environment and Resources,Guangxi Normal University,Guilin 541006,China;Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection,Guilin 541006,China;School of Life and Environmental Sciences,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]广西师范大学环境与资源学院,广西桂林541006 [2]珍稀濒危动植物生态与环境保护教育部重点实验室,广西桂林541006 [3]桂林电子科技大学生命与环境科学学院,广西桂林541004

出　　处：《中国给水排水》2024年第21期109-115,共7页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51469006);广西科技攻关计划项目(1598016-4);桂林市科技计划项目(2016012506)。

摘　　要：对比了微电解耦合上升垂直流人工湿地系统(A)和普通上升垂直流人工湿地系统(B)对畜禽废水中磺胺二甲基嘧啶(SM2)的净化效果,并分析SM2对两种人工湿地系统基质酶活性和微生物群落的影响。结果表明,向废水中投加SM2后,A系统对常规污染物的去除效果几乎不受影响,仍然稳定维持较高的污染物去除率,对SM2的去除率也远高于B系统,而B系统受SM2的冲击较大,常规污染物去除率平均下降约15个百分点且波动明显。SM2对A系统中脲酶、碱性磷酸酶和脱氢酶活性的影响相对较小,表明A系统对SM2的冲击适应能力更强,其微生物体系仍然维持了较好的功能状态。铁碳微电解作用能有效降低SM2对A系统中微生物种群的胁迫效应,与去除常规污染物有关的功能菌属的丰度略有变化,但不显著,影响抗生素去除的优势菌株包括Cloacibacterium、Lysobacter、Acinetobacter和Brevundimonas等,在投加SM2后的运行过程中丰度显著增加,系统的适应性调整维持了其良好的运行状况与去除效能。B系统中脲酶、碱性磷酸酶、脱氢酶活性和微生物总体丰度均大幅下降,表明B系统缺乏应对SM2冲击的能力,其微生态在一定程度上受到SM2的抑制,因此污染物去除效果大幅降低。The purification efficacy of micro-electrolysis coupled with upflow vertical flow constructed wetland system(A)was compared with that of an ordinary upflow vertical flow constructed wetland system(B)for the treatment of sulfamethazine(SM2)present in livestock wastewater.Additionally,the impact of SM2 on substrate enzyme activities and microbial communities within bothconstructed wetland systems was analyzed.The introduction of SM2 into the wastewater had a negligibleimpact on system A’s removal efficiency for conventional pollutants,which remained consistently highand stable.In contrast,system B experienced significant adverse effects from SM2,resulting in an averagedecrease of approximately 15%in the removal efficiency of conventional pollutants,accompanied byconsiderable fluctuations.The influence of SM2 on the activities of urease,alkaline phosphatase,anddehydrogenase in system A was relatively minor,suggesting that system A exhibited greater resilience tothe effects of SM2 while its microbial community continued to uphold a robust functional state.The ironcarbonmicro-electrolysis effectively mitigated the stress impact of SM2 on the microbial communitywithin system A.The abundance of functional bacterial genera linked to the removal of conventionalpollutants exhibited minor changes,though these were not statistically significant.The predominantstrains influencing antibiotic degradation included Cloacibacterium,Lysobacter,Acinetobacter,andBrevundimonas,and their abundances exhibited a marked increase during the operation after theintroduction of SM2.The system’s adaptive adjustments ensured sustained operational stability andremoval efficiency.The activities of urease,alkaline phosphatase,and dehydrogenase,along with theoverall microbial abundance in system B,exhibited significant reductions.This indicated that system Bwas unable to effectively mitigate the impact of SM2,resulting in a notable inhibition of its microecologyby SM2 and consequently diminishing the pollutants removal efficiency.

关 键 词：微电解 人工湿地 磺胺二甲基嘧啶 酶活性 

分 类 号：TU992[建筑科学—市政工程]