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多壁碳纳米管长期作用对活性污泥系统的影响

王玉琳 闻 韵 王晓慧 杜志泽 海热提 李 媛

王玉琳, 闻 韵, 王晓慧, 杜志泽, 海热提, 李 媛. 多壁碳纳米管长期作用对活性污泥系统的影响[J]. 环境科学研究, 2014, 27(12): 1486-1492.
引用本文: 王玉琳, 闻 韵, 王晓慧, 杜志泽, 海热提, 李 媛. 多壁碳纳米管长期作用对活性污泥系统的影响[J]. 环境科学研究, 2014, 27(12): 1486-1492.
WANG Yu-lin, WEN Yun, WANG Xiao-hui, DU Zhi-ze, Haireti, LI Yuan. Long-Term Effects of Multi-Walled Carbon Nanotubes on Activated Sludge System[J]. Research of Environmental Sciences, 2014, 27(12): 1486-1492.
Citation: WANG Yu-lin, WEN Yun, WANG Xiao-hui, DU Zhi-ze, Haireti, LI Yuan. Long-Term Effects of Multi-Walled Carbon Nanotubes on Activated Sludge System[J]. Research of Environmental Sciences, 2014, 27(12): 1486-1492.

多壁碳纳米管长期作用对活性污泥系统的影响

基金项目: 北京市科技计划项目(Z121100001512008);环境模拟与污染控制国家重点联合实验室专项(13K06ESPCT)

Long-Term Effects of Multi-Walled Carbon Nanotubes on Activated Sludge System

  • 摘要: 为研究MWCNTs(multi-walled carbon nanotubes,多壁碳纳米管)对活性污泥长期作用的影响,建立3组(每组包括3个平行反应器)序批式活性污泥反应器,研究了2种质量浓度(1、20 mg/L)的MWCNTs长期(120 d)作用对活性污泥系统废水处理效果的影响,并采用Illumina MiSeq高通量测序技术研究MWCNTs长期作用后活性污泥中细菌群落结构的变化. 结果表明:20 mg/L的MWCNTs对生物脱氮效果存在明显的抑制作用,TN平均去除率由83.4%降至71.7%;1 mg/L的MWCNTs长期作用后TN平均去除率由83.7%降至79.7%. 1和20 mg/L的MWCNTs对磷的去除均有抑制作用,TP平均去除率分别由98.0%和98.2%降至52.0%和34.0%. Illumina MiSeq高通量测序结果表明,不同质量浓度的MWCNTs长期作用后降低了活性污泥中细菌群落的多样性. 同时,活性污泥中细菌群落结构也发生了变化,其中α-Proteobacteria和γ-Proteobacteria的丰度升高,Bacteroidetes的丰度降低. 1 mg/L的MWCNTs长期作用可致以Defluviicoccus和Micropruina为代表的一类聚糖菌(glycogen-accumulating organisms, GAOs)丰度显著升高,20 mg/L的MWCNTs长期作用可致16个核心属的丰度明显降低.

     

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出版历程
  • 收稿日期:  2014-01-03
  • 修回日期:  2014-04-26
  • 刊出日期:  2014-12-25

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