[1]王万金,张漓杉,钟山,等.微电解耦合人工湿地去除畜禽废水中SM2[J].中国给水排水,2024,40(21):109-115.
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微电解耦合人工湿地去除畜禽废水中SM2

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第40卷 期数: 2024年第21期 页码: 109-115 栏目: 出版日期: 2024-11-01
Title:
Micro-electrolysis Coupled with Constructed Wetland for Removal of Sulfamethazine from Livestock Wastewater
作者:
王万金1,2， 张漓杉2,3， 钟山2,3， 朱佳燕1,2， 张梅芳1,2， 陈运妹1,2， 肖桂芳1,2
（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）
Author(s):
WANG　Wan-jin1，2， ZHANG　Li-shan2，3， ZHONG　Shan2，3， ZHU　Jia-yan1，2， ZHANG　Mei?fang1，2， CHEN　Yun-mei1，2， XIAO　Gui-fang1，2
（1. College of Environment and Resources， Guangxi Normal University， Guilin 541006， China； 2. Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection ， Guilin 541006， China； 3. School of Life and Environmental Sciences， Guilin University of Electronic Technology， Guilin 541004， China）
关键词:
微电解;  人工湿地;  磺胺二甲基嘧啶;  酶活性
Keywords:
micro-electrolysis;  constructed wetland;  sulfamethazine;  enzyme activities
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。
Abstract:
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 both constructed wetland systems was analyzed. The introduction of SM2 into the wastewater had a negligible impact on system A’s removal efficiency for conventional pollutants, which remained consistently high and stable. In contrast, system B experienced significant adverse effects from SM2, resulting in an average decrease of approximately 15% in the removal efficiency of conventional pollutants, accompanied by considerable fluctuations. The influence of SM2 on the activities of urease, alkaline phosphatase, and dehydrogenase in system A was relatively minor, suggesting that system A exhibited greater resilience to the effects of SM2 while its microbial community continued to uphold a robust functional state. The iron-carbon micro-electrolysis effectively mitigated the stress impact of SM2 on the microbial community within system A. The abundance of functional bacterial genera linked to the removal of conventional pollutants exhibited minor changes, though these were not statistically significant. The predominant strains influencing antibiotic degradation included Cloacibacterium, Lysobacter, Acinetobacter, and Brevundimonas, and their abundances exhibited a marked increase during the operation after the introduction of SM2. The system’s adaptive adjustments ensured sustained operational stability and removal efficiency. The activities of urease, alkaline phosphatase, and dehydrogenase, along with the overall microbial abundance in system B, exhibited significant reductions. This indicated that system B was unable to effectively mitigate the impact of SM2, resulting in a notable inhibition of its microecology by SM2 and consequently diminishing the pollutants removal efficiency.

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更新日期/Last Update: 2024-11-01