Nitrate Removal from Groundwater by Nanoscale Zero-Valent Iron (NZVI) Coupling Autohydrogenotrophic Denitrification

被引:0
作者
Wang Hongyu [1 ]
Zhang Shilu [1 ]
Chen Dan [1 ]
He Qiulai [1 ]
机构
[1] Wuhan Univ, Sch Civil Engn, Wuhan, Peoples R China
来源
PROCEEDINGS OF THE 2016 INTERNATIONAL CONFERENCE ON EDUCATION, MANAGEMENT, COMPUTER AND SOCIETY | 2016年 / 37卷
关键词
Nitrate removal; NZVI; chemical denitrification; autohydrogenotrophic denitrification; coupling system; HYDROGEN-DEPENDENT DENITRIFICATION; MEMBRANE-BIOFILM REACTOR; METALLIC IRON; REDUCTION; KINETICS; WATER; PH;
D O I
暂无
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
In this work, the denitrification performance of a bio-reactor based on nanoscale zero-valent iron (NZVI) coupling autohydrogenotrophic denitrification was investigated. A series of bio-reactors were configured by inoculating and acclimating pure culture capable capable of denitrification. Effects of various parameters including nitrate (NO3-_N) loading, NZVI to nitrogen ratio (Fe/N), pH and atmosphere on denitrification were evaluated by batch tests. The results showed that the optimum Fe/N and NO3-N loading were 2.8 and 105 mg/L, respectively. Dentrification process remained unaffected by pH ranging from 6.0 to 9.0, while sharp accumulation of nitrite (NO2-_N) occurred at pH 9.0. Complete NO3-_N removal was obtained by providing both nitrogen (N2) and hydrogen gas (H2). In general, excellent nitrogen removal efficiency was always achieved in the chemical-biological coupling system, indicating that the system had strong stability and adaptability for practical application, which offered both theoretic and technical supports to a new efficient and costeffective method to eliminate NO3-_ N from water.
引用
收藏
页码:1346 / 1349
页数:4
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共 20 条
  • [1] [Anonymous], 2005, Standard methods for the examination of water and waste- water
  • [2] EPA, 189182002 GB
  • [3] Bio-electrochemical removal of nitrate from water and wastewater - A review
    Ghafari, Shahin
    Hasan, Masitah
    Aroua, Mohamed Kheireddine
    [J]. BIORESOURCE TECHNOLOGY, 2008, 99 (10) : 3965 - 3974
  • [4] Nitrate reduction by metallic iron
    Huang, CP
    Wang, HW
    Chiu, PC
    [J]. WATER RESEARCH, 1998, 32 (08) : 2257 - 2264
  • [5] Mechanism study of nitrate reduction by nano zero valent iron
    Hwang, Yu-Hoon
    Kim, Do-Gun
    Shin, Hang-Sik
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2011, 185 (2-3) : 1513 - 1521
  • [6] Jiang Wei Jiang Wei, 2001, China Environmental Science, V21, P133
  • [7] Effects of pH and precipitation on autohydrogenotrophic denitrification using the hollow-fiber membrane-biofilm reactor
    Lee, KC
    Rittmann, BE
    [J]. WATER RESEARCH, 2003, 37 (07) : 1551 - 1556
  • [8] Simultaneous reduction of nitrate and oxidation of by-products using electrochemical method
    Li, Miao
    Feng, Chuanping
    Zhang, Zhenya
    Lei, Xiaohui
    Chen, Rongzhi
    Yang, Yinan
    Sugiura, Norio
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2009, 171 (1-3) : 724 - 730
  • [9] Li Xiao, 2012, NANO ENERGY, V3, P751
  • [10] Effects of operational parameters on the treatment of nitrate-rich wastewater by autohydrogenotrophic denitrifying bacteria
    Mousavi, Seyyedalireza
    Ibrahim, Shaliza
    Aroua, Mohamed Kheireddine
    [J]. WATER AND ENVIRONMENT JOURNAL, 2014, 28 (04) : 556 - 565