The effect of continuous exposure of copper on the properties and extracellular polymeric substances (EPS) of bulking activated sludge

被引：33
|
作者：
Li, Jia [1 ]
Liu, Xiang [1 ]
Liu, Yan [1 ]
Ramsay, Juliana [2 ]
Yao, Chenchao [1 ]
Dai, Ruihua [1 ]
机构：
[1] Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China
[2] Queens Univ, Dept Chem Engn, Kingston, ON K7L 3N6, Canada
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2011年 / 18卷 / 09期
关键词：
Copper; Bulking sludge; Settling property; Dewatering property; Extracellular polymeric substances (EPS); EXTRACTION; METALS; ZINC;
D O I：
10.1007/s11356-011-0492-6
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Introduction This study investigated the effect of copper on chemical oxygen demand (COD) removal efficiency and on the properties (mainly settling and dewatering) and the composition of extracellular polymeric substances (EPS) when 20 mg/L Cu(II) was continuously dosed to a sequencing batch reactor (SBR) inoculated with activated sludge. Materials and methods The results showed that the continuous addition of 20 mg/L Cu(II) seriously inhibited the removal of sodium benzoate (provided as a model organic pollutant) by activated sludge in a SBR. Results and discussion After 40 days of acclimation, the removal efficiency presented a slight but unsteady recovery and the settling and dewatering properties improved, indicating that sludge bulking had been inhibited. Additionally, the proportion of loosely bound EPS in the total EPS increased with time and the relative composition of the total organics was polysaccharide > humic substances > protein > DNA. Conclusion The effects of copper on the composition of EPS and the settling and dewatering properties of bulking activated sludge were also discussed for the first time in this paper.
引用
收藏
页码：1567 / 1573
页数：7
相关论文
共 50 条
  • [1] The effect of continuous exposure of copper on the properties and extracellular polymeric substances (EPS) of bulking activated sludge
    Jia Li
    Xiang Liu
    Yan Liu
    Juliana Ramsay
    Chenchao Yao
    Ruihua Dai
    [J]. Environmental Science and Pollution Research, 2011, 18 : 1567 - 1573
  • [2] Effect of extracellular polymeric substances (EPS) on the attachment of activated sludge
    Young Seek Park
    Dong Seog Kim
    Tae Joo Park
    Seung Koo Song
    [J]. Bioprocess Engineering, 2000, 22 : 1 - 3
  • [3] Effect of extracellular polymeric substances (EPS) on the attachment of activated sludge
    Park, YS
    Kim, DS
    Park, TJ
    Song, SK
    [J]. BIOPROCESS ENGINEERING, 2000, 22 (01): : 1 - 3
  • [4] Effect of soluble extracellular polymeric substances (soluble eps) on activated sludge dewaterability
    Wang, Hongwu
    Wu, Deli
    Fan, Jinhong
    Ma, Luming
    [J]. FRESENIUS ENVIRONMENTAL BULLETIN, 2008, 17 (06): : 658 - 663
  • [5] Effect of C/N ratio on extracellular polymeric substances (EPS) and physicochemical properties of activated sludge flocs
    Ye, Fenxia
    Ye, Yangfang
    Li, Ying
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2011, 188 (1-3) : 37 - 43
  • [6] New insights into filamentous sludge bulking: The potential role of extracellular polymeric substances in sludge bulking in the activated sludge process
    Li, Wei-Ming
    Liao, Xi-Wen
    Guo, Jin-Song
    Zhang, Yu-Xin
    Chen, You-Peng
    Fang, Fang
    Yan, Peng
    [J]. CHEMOSPHERE, 2020, 248
  • [7] Influences of influent carbon source on extracellular polymeric substances (EPS) and physicochemical properties of activated sludge
    Ye, FenXia
    Peng, Ge
    Li, Ying
    [J]. CHEMOSPHERE, 2011, 84 (09) : 1250 - 1255
  • [8] Effects of potassium ferrate on extracellular polymeric substances (EPS) and physicochemical properties of excess activated sludge
    Ye, Fenxia
    Liu, Xinwen
    Li, Ying
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2012, 199 : 158 - 163
  • [9] Extraction of extracellular polymeric substances (EPS) from four kinds of activated sludge
    Ge, Liyun
    Wang, Hongwu
    Ma, Luming
    Deng, Huanhuan
    [J]. FRESENIUS ENVIRONMENTAL BULLETIN, 2006, 15 (10): : 1252 - 1255
  • [10] Influences of extracellular polymeric substances (EPS) on flocculation, settling, and dewatering of activated sludge
    Liu, Y
    Fang, HHP
    [J]. CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, 2003, 33 (03) : 237 - 273
12345