| 土霉素对SBR系统细菌的抑制效应与机制研究 |
| |
| 引用本文： | 楼成珂,孙培德,王如意,胡哲太,杨朋飞,林逸文.土霉素对SBR系统细菌的抑制效应与机制研究[J].环境科学学报,2017,37(7):2552-2560. |
| |
| 作者姓名： | 楼成珂 孙培德 王如意 胡哲太 杨朋飞 林逸文 |
| |
| 作者单位： | 浙江工商大学环境科学与工程学院, 杭州 310012,浙江工商大学环境科学与工程学院, 杭州 310012,浙江工商大学环境科学与工程学院, 杭州 310012,浙江工商大学环境科学与工程学院, 杭州 310012,浙江工商大学环境科学与工程学院, 杭州 310012,浙江工商大学环境科学与工程学院, 杭州 310012 |
| |
| 基金项目： | 国家自然科学基金（No.21276236）；浙江省重大科技专项（No.2014C03002）；国家自然科学基金青年基金（No.21606196） |
| |
| 摘 要： | 基于SBR系统,从脱氮过程、化学需氧量(COD)的去除过程、胞外聚合物(EPS)的总量变化过程、比呼吸速率(SOUR)的变化过程及微生物群落的变化等多个角度出发,较系统地研究了不同浓度土霉素对SBR系统的冲击作用.结果表明,由于土霉素(OTC)的作用,系统氨氮去除率从空白对照组的99.0%分别下降至77.2%(OTC 1 mg·L~(-1))、47.4%(OTC 5 mg·L~(-1))及10.0%(OTC 10 mg·L~(-1)).此外,高浓度土霉素(10mg·L~(-1))引起EPS分泌量和异养菌SOUR分别下降至空白组的44.3%和41.2%.由高通量分析可得,由于高浓度土霉素(5 mg·L~(-1)以上)的作用,活性污泥中微生物的多样性显著下降,且微生物的群落结构也发生显著变化.属层面的分析可得,高浓度土霉素(5 mg·L~(-1)以上)反应器中的部分氨氧化菌,如Nitrospira和Nitrosomonas均受到了抑制.
|
| 关 键 词： | 土霉素 SBR 脱氮效率 群落结构变迁 |
| 收稿时间： | 2016/10/17 0:00:00 |
| 修稿时间： | 2016/12/17 0:00:00 |
Inhibition effect of oxytetracycline on microorganism of SBRs |
| |
| LOU Chengke,SUN Peide,WANG Ruyi,HU Zhetai,YANG Pengfei and LIN Yiwen.Inhibition effect of oxytetracycline on microorganism of SBRs[J].Acta Scientiae Circumstantiae,2017,37(7):2552-2560. |
| |
| Authors: | LOU Chengke SUN Peide WANG Ruyi HU Zhetai YANG Pengfei and LIN Yiwen |
| |
| Institution: | School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012,School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012,School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012,School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012,School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012 and School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012 |
| |
| Abstract: | The performances of SBR, including ammonia nitrogen removal efficiency (N-removal), chemical oxygen demand (COD) removal efficiency, extracellular polymeric substance (EPS) concentration, special oxygen utilization rate (SOUR) and the microbial community shift, under exposure to oxytetracycline (OTC) were evaluated in this research. Results show that N-removal decline from 99.0% to 77.2%, 47.4% and 10.0% under 1,5 and 10 mg·L-1 respectively.In addition, high concentration of OTC(10 mg·L-1) induce EPS and the SOUR of heterotrophic bacteria declined to 44.3% and 41.2% compared to the control.The high-throughput sequence analysis revealed that the high concentration(above 5 mg·L-1) OTC has shown the serious influence on the microbial community.Moreover, according to the sequence analysis on genus level, some functional bacteria such as Nitrospira and Nitrosomonas, were inhibited by OTC. |
| |
| Keywords: | oxytetracycline SBR nitrogen removal efficiency microbial community variation |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《环境科学学报》浏览原始摘要信息 |
| 点击此处可从《环境科学学报》下载免费的PDF全文 |
|
