高级搜索

NO2--N和盐度对反硝化除磷及N2O释放的影响

,  ,  ,  ,  , 

downloadPDF

上一篇

下一篇

吕永涛, 党文娟, 周亦桥, 廖正伟, 贺酰淑, 王磊. NO2--N和盐度对反硝化除磷及N2O释放的影响[J]. 环境工程学报, 2018, 12(6): 1651-1656. doi: 10.12030/j.cjee.201711193
引用本文: 吕永涛, 党文娟, 周亦桥, 廖正伟, 贺酰淑, 王磊. NO2--N和盐度对反硝化除磷及N2O释放的影响[J]. 环境工程学报, 2018, 12(6): 1651-1656. doi: 10.12030/j.cjee.201711193
shu
LYU Yongtao, DANG Wenjuan, ZHOU Yiqiao, LIAO Zhengwei, HE Xianshu, WANG Lei. Effects of nitrite and salinity on efficiency of denitrification phosphorus removal system and nitrous oxide emissions[J]. Chinese Journal of Environmental Engineering, 2018, 12(6): 1651-1656. doi: 10.12030/j.cjee.201711193
Citation: LYU Yongtao, DANG Wenjuan, ZHOU Yiqiao, LIAO Zhengwei, HE Xianshu, WANG Lei. Effects of nitrite and salinity on efficiency of denitrification phosphorus removal system and nitrous oxide emissions[J]. Chinese Journal of Environmental Engineering, 2018, 12(6): 1651-1656. doi: 10.12030/j.cjee.201711193
shu

NO2--N和盐度对反硝化除磷及N2O释放的影响

  • 1.

    西安建筑科技大学环境与市政工程学院，西安 710055

  • 2.

    陕西省水务集团水务科技有限公司，西安 710000

  • 基金项目:

    国家自然科学基金资助项目(51108367)

    陕西省建设厅科技发展计划项目(2015-K61)

Effects of nitrite and salinity on efficiency of denitrification phosphorus removal system and nitrous oxide emissions

  • 1.

    School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055,China

  • 2.

    Shaanxi Water Affair Science and Technology Co.Ltd., Xi'an 710000, China

  • Fund Project:

  • 摘要: 以驯化好的反硝化除磷污泥为研究对象，通过批式实验考察了NO2--N和NaCl浓度对反硝化除磷率及N2O释放的影响。当进水亚硝酸盐的浓度由15 mg·L-1升高至25和40 mg·L-1时，除磷率由68.81%±0.5%降至66.25%±1%和62.88%±0.8%，TN的去除率由90.6%±0.7%降至74.55%±1.5%和51.65%±2%，N2O释放量分别为4.82、13.83和17.06 mg。当NaCl质量分数为0%、0.5%、1%和2%时，TN的去除率由74.55%±1%降至68%±2%、64.2%±1%和54.3%±2.5%，除磷率由66.37%±1.5%降至61.29%±1%、50.47%±2%和36.7%±0.5%，N2O-N转化率为41.1%±2%、41.4%±2.5%、48.94%±0.6%和51.03%±2%。因此，NO2--N和NaCl质量分数的升高均会降低脱氮除磷效率，但增加了N2O释放量；兼顾脱氮除磷效率前提下，NO2--N为25 mg·L-1、NaCl质量分数为1%是N2O释放量增加的优化条件。
    Abstract: The effects of nitrite and salinity on denitrifying phosphorus removal and nitrous oxide emissions were investigated by batch experiments. When the nitrite concentration increased from 15 to 25 and 40 mg·L-1, the phosphorus removal efficiency decreased from 68.81%±0.5% to 66.25%±1% and 62.88%±0.8%, and the total nitrogen removal efficiency decreased from 90.6%±0.7% to 74.55%±1.5% and 51.65%±2%. However, the nitrous oxide emissions increased from 8.82 to 13.83 and 17.06 mg, respectively. With the increase of salinity concentration from 0% to 0.5%, 1% and 2%, the total nitrogen removal efficiency decreased from 74.55%±1% to 68%±2% , 64.2%±1% and 54.3% ± 2.5%, and the phosphorus removal rates decreased from 66.37%±1.5% to 61.29%±1%, 50.47%±2% and 36.7%±0.5%. Correspondingly, 41.1%±1.5%, 41.4%±2.5%, 48.94%± 0.6% and 51.03%±2% of the total nitrogen was converted to nitrous oxide, respectively. In summary, the removal efficiency of nitrogen and phosphorus decreased simultaneously with the increase of the nitrite and salinity concentration, while the nitrous oxide emissions increased. Therefore, the optimum condition was when the nitrite and NaCl concentration were 25 mg·L-1 and 1%, which was better for both the nitrous oxide accumulation and the nitrogen and phosphate removal.
  • 加载中
  • [1] WARRICK R A, LE C P, MEIER M F, et al.Climate change 1995:The science of climate change[J].Environment & Planning A,1996,25(5):43-55
    [2] 王淑莹,委燕,彭永臻,等.一种实现污泥消化液短程硝化过程中N2O产生与利用的方法:CN103739086A[P].2014-04-23
    [3] KERRN J P, HENZE M.Biological phosphorus uptake under anoxic and aerobic conditions[J].Water Research,1993,27(4):617-624 10.1016/0043-1354(93)90171-D
    [4] 张清华.污水生物脱氮处理工艺中N2O气体的调查与研究[D].西安：陕西科技大学,2016
    [5] THRID K A, BURNETT N, COED R.Simultaneous nitrification and denitrification using stored substrate (PHB)as the electron donor in an SBR[J].Biotechnology and Bioengineering,2003,83:706-720 10.1002/bit.10708
    [6] 郭春艳.不同电子受体及pH值对聚磷菌代谢的影响[D].北京：北京工业大学,2011
    [7] SCHERSON Y D, WOO S G,CRIDDLE C S.Production of nitrous oxide from anaerobic digester centrate and its use as a co-oxidant of biogas to enhance energy recovery[J].Environmental Science & Technology,2014,48(10):5612-5619 10.1021/es501009j
    [8] 刘甜甜,刘牡,王淑莹,等.盐度耦合 FNA 对短程反硝化过程中 N2O 还原的影响[J].中南大学学报（自然科学版）,2013,44(8):3561-3568
    [9] ZHAO W, WANG Y, LIU S, et al.Denitrification activities and N2O production under salt stress with varying COD/N ratios and terminal electron acceptors[J].Chemical Engineering Journal,2013,215(2):252-260 10.1016/j.cej.2012.10.084
    [10] ZHOU Y,PIJUAN M,YUAN Z G.Development of a 2-sludge,3-stage system for nitrogen and phosphorous removal from nutrient-rich wastewater using granular sludge and biofilms[J].Water Research,2008,42(12):3207-3217 10.1016/j.watres.2008.04.012
    [11] 国家环境保护总局.水和废水监测分析方法[M]. 4版.北京:中国环境科学出版社,2002
    [12] LEMAIRE R, MEYER R, TASKE A, et al.Identifying causes for N2O accumulation in a lab-scale sequencing batch reactor performing simultaneous nitrification,denitrification and phosphorus removal[J].Journal of Biotechnology,2006,122(1):62-72 10.1016/j.jbiotec.2005.08.024
    [13] WANG Y, GENG J, REN Z, et al.Effect of anaerobic reaction time on denitrifying phosphorus removal and N2O production[J].Bioresource Technology,2011,102(10):5674-5684 10.1016/j.biortech.2011.02.080
    [14] WANG Y Y, ZHOU S, YE L, et al.Nitrite survival and nitrous oxide production of denitrifying phosphorus removal sludge oxide production of denitrifying phosphorus removal sludge batch reactors[J].Water Research,2014,67:33-45 10.1016/j.watres.2014.08.052
    [15] 苗志加,薛桂松,翁冬晨，等.亚硝酸盐对聚磷茵反硝化除磷代谢及N2O产生的影响[J].化工学报,2013,64(6):2201-2206
    [16] 王亚宜,王淑莹,彭永臻,等.MLSS、pH及NO2--N对反硝化除磷的影响[J].中国给水排水,2005,21(7):47-51
    [17] 刘建广,付昆明,杨义飞,等.不同电子受体对反硝化除磷菌缺氧吸磷的影响[J].环境科学,2007,28(7):1472-1476
    [18] ZHOU Y N, PIJUAN M, ZENG R J, et al.Free nitrous acid inhibition on nitrous oxide reduction by a denitrifying-enhanced biological phosphorus removal sludge[J].Environmental Science & Technology,2008,42(22):8260-8265 10.1021/es800650j
    [19] ZHOU Y, GANDA L, LIM M, et al.Free nitrous acid (FNA) inhibition on denitrifying poly-phosphate accumulating organisms (DPAOs)[J].Applied Microbiology & Biotechnology,2010,88(1):359-369 10.1007/s00253-010-2780-3
    [20] 尚会来,彭永臻,张静蓉,等.盐度对污水硝化过程中N2O产量的影响[J].环境科学,2009,30(4):1079-1083
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  3810
  • HTML全文浏览数:  3458
  • PDF下载数:  397
  • 施引文献:  0
出版历程
  • 刊出日期:  2018-06-18

NO2--N和盐度对反硝化除磷及N2O释放的影响

  • 1. 西安建筑科技大学环境与市政工程学院，西安 710055
  • 2. 陕西省水务集团水务科技有限公司，西安 710000
基金项目:

国家自然科学基金资助项目(51108367)

陕西省建设厅科技发展计划项目(2015-K61)

摘要: 以驯化好的反硝化除磷污泥为研究对象，通过批式实验考察了NO2--N和NaCl浓度对反硝化除磷率及N2O释放的影响。当进水亚硝酸盐的浓度由15 mg·L-1升高至25和40 mg·L-1时，除磷率由68.81%±0.5%降至66.25%±1%和62.88%±0.8%，TN的去除率由90.6%±0.7%降至74.55%±1.5%和51.65%±2%，N2O释放量分别为4.82、13.83和17.06 mg。当NaCl质量分数为0%、0.5%、1%和2%时，TN的去除率由74.55%±1%降至68%±2%、64.2%±1%和54.3%±2.5%，除磷率由66.37%±1.5%降至61.29%±1%、50.47%±2%和36.7%±0.5%，N2O-N转化率为41.1%±2%、41.4%±2.5%、48.94%±0.6%和51.03%±2%。因此，NO2--N和NaCl质量分数的升高均会降低脱氮除磷效率，但增加了N2O释放量；兼顾脱氮除磷效率前提下，NO2--N为25 mg·L-1、NaCl质量分数为1%是N2O释放量增加的优化条件。

English Abstract

参考文献 (20)

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心