Journal of South China University of Technology (Natural Science Edition) ›› 2014, Vol. 42 ›› Issue (5): 48-53.doi: 10.3969/j.issn.1000-565X.2014.05.008

• Environmental Science & Technology • Previous Articles     Next Articles

Characteristics of Disinfection By- Products Formation from Algae Organic Matters in the Process of Chlorination

Gao Nai- yun1 Zhu Ming- qiu1 Zhou shi- qing1 Li Lei1 Rong Wen- lei2 Zhou Sheng- dong2 Lu Na- xin2   

  1. 1.State Key Laboratory of Pollution Control and Resource Reuse,Tongji University,Shanghai 200092,China;2.Wuxi Waterworks Co.,Ltd.,Wuxi 214031,Jiangsu,China
  • Received:2013-06-14 Revised:2013-11-24 Online:2014-05-25 Published:2014-04-01
  • Contact: 高乃云(1950-)，女，博士，教授，博士生导师，主要从事饮用水处理技术研究． E-mail:gaonaiyun@sina.com
  • About author:高乃云(1950-)，女，博士，教授，博士生导师，主要从事饮用水处理技术研究．
  • Supported by:

    国家水体污染控制与治理科技重大专项(2012ZX07403-001);国家自然科学基金资助项目(51178321);高等学校博士学科点专项科研基金资助项目(20120072110050)

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Abstract:

Six kinds of nitrogen- enriched intracellular and extracellular algae organic matters of Microcystic aerugi-nosa with different characteristics were obtained via the fractionation electrodialysis of hydrophilic and hydrophobiccomponents,with the mass concentrations of dissolved organic nitrogen (DON) ranging from 0.57 to 1.69 mg/L.Then,the 3D fluorescence spectrography was adopted to analyze the composition of hydrophilic and hydrophobiccomponents,finding that the former was mainly composed of humus- like substances and the latter mainly composedof protein.Afterwards,the formation characteristics of carbonaceous (nitrogenous) disinfection byproducts fromdifferent organic matters were analyzed and compared after a 3- day chlorination.The results show that (1) hydro-phobic intracellular and extracellular organic matters are of maximum trihalide methane formation potential,espe-cially for chloroform; (2) there is a significant correlation between haloketone formation potential and intracellularand extracellular organic matters; (3) the hydrophilic component in intracellular organic matters is of the greatestnitrogenous disinfection by- products formation potential (DBPFP); (4) the disinfection by- products formation po-tential of each component is not only determined by the value of DOC/DON (namely the mass concentration ratio ofdissolved organic carbon to DON) but also by the characteristics of DON; (5) the DBPFP of extracellular organicmatters is positively correlated with the content of aromatic organic materials,while that of intracellular organic mat-ters is mainly influenced by the properties of aromatic organic materials; and (6) the disinfection by- products pro-duced by extracellular organic matters are in a content order of hydrophobic by- products ＞ hydrophilic by- products＞ transphilic by- products,while those produced by intracellular matters are indicative of the following order: hy-drophilic by- products ＞ hydrophobic by- products ＞ transphilic by- products.

Key words: Microcystic aeruginosa, disinfection by- product, hydrophilicity, hydrophobicity, dissolved organic ni-trogen, chlorination

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