Formation of nitrogenous disinfection by-products from pre-chloramination

Wen Hai Chu, Nai Yun Gao, Yang Deng, Michael R. Templeton, Da Qiang Yin

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

A sampling survey investigated the formation of nitrogenous disinfection by-products (N-DBPs) and carbonaceous DBPs (C-DBPs) from pre-chloramination, an increasingly common treatment strategy in China for regulated C-DBP control, followed by subsequent conventional water treatment processes, i.e., coagulation, sedimentation, and filtration. Dihalogenated N-DBPs typically peaked in the summer and early autumn with a relatively higher temperature, with the maximum levels of dichloroacetamide (DCAcAm), dichloroacetonitrile (DCAN), bromochloroacetonitrile, dibromoacetonitrile and dichloroacetone at 1.8, 6.3, 6.0, 2.6 and 1.8μgL-1 in the finished water, respectively. Also, the levels of all the dichlorinated N-DBPs were correlated with the ratio of dissolved organic nitrogen (DON) to dissolved organic carbon, implying autochthonous DON played an essential role in the formation of these DBPs. In contrast, the yields of trihalogenated DBPs [chloroform (CF), trichloronitromethane (TCNM) and trichloroacetone (TCAce)] appeared not to be significantly affected by seasons. CF and DCAN were the dominant species in trihalomethanes (THMs) and dihaloacetonitriles (DHANs), respectively. Bromine was more readily incorporated into DHANs to form brominated DBPs than THMs during pre-chloramination. Although pre-chloramination can ensure the finished water to meet with the current Chinese THM regulatory limits, the increased levels of TCNM and TCAce may be a new water quality concern.

Original languageEnglish
Pages (from-to)1187-1191
Number of pages5
JournalChemosphere
Volume85
Issue number7
DOIs
StatePublished - Nov 1 2011

Fingerprint

Trihalomethanes
Disinfection
disinfection
Byproducts
dibromoacetonitrile
dissolved organic nitrogen
Chloroform
Chlorine compounds
chloroform
Nitrogen
Bromine
Water
Water Purification
Water Quality
bromine
Organic carbon
Coagulation
Water treatment
Sedimentation
coagulation

All Science Journal Classification (ASJC) codes

  • Pollution
  • Chemistry(all)
  • Health, Toxicology and Mutagenesis
  • Environmental Engineering
  • Environmental Chemistry

Keywords

  • Bromine incorporation
  • Dichloroacetamide
  • Drinking water
  • Formation
  • Nitrogenous disinfection by-products

Cite this

Chu, Wen Hai ; Gao, Nai Yun ; Deng, Yang ; Templeton, Michael R. ; Yin, Da Qiang. / Formation of nitrogenous disinfection by-products from pre-chloramination. In: Chemosphere. 2011 ; Vol. 85, No. 7. pp. 1187-1191.
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Formation of nitrogenous disinfection by-products from pre-chloramination. / Chu, Wen Hai; Gao, Nai Yun; Deng, Yang; Templeton, Michael R.; Yin, Da Qiang.

In: Chemosphere, Vol. 85, No. 7, 01.11.2011, p. 1187-1191.

Research output: Contribution to journalArticle

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T1 - Formation of nitrogenous disinfection by-products from pre-chloramination

AU - Chu, Wen Hai

AU - Gao, Nai Yun

AU - Deng, Yang

AU - Templeton, Michael R.

AU - Yin, Da Qiang

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KW - Dichloroacetamide

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