TY - JOUR
T1 - Molecular size distribution of dissolved organic matter in water of the Pearl River and trihalomethane formation characteristics with chlorine and chlorine dioxide treatments
AU - Zhao, Zhen Ye
AU - Gu, Ji Dong
AU - Fan, Xiao Jun
AU - Li, Hai Bo
N1 - Funding Information:
This work was financially supported by Guangdong Natural Science Funds (021425). Additional support was by Macau Water Works and The University of Hong Kong.
PY - 2006/6/30
Y1 - 2006/6/30
N2 - River water sample was collected from Guangzhou section of the Pearl River to investigate soluble organic fractions and formation of trihalomethane (THMs) after chlorine and chlorine dioxide treatments. The water sample was passed through Amicon® YC-05, YM-1, YM-3, YM-10, YM-30, YM-100 and ZM-500 series membranes after a pre-treatment. The molecular weight distribution and the specific ultra-violet absorbance (SUVA254) of each fraction obtained from membrane were analyzed, and these fractions were further disinfected with chlorine and chlorine dioxide. The results showed that reverse osmosis (RO) fraction contained mainly dissolved organic matter (DOM) from the water sample, suggesting that the water has been highly contaminated by anthropogenic activities. Meanwhile, the THMs concentration and SUVA254 increased gradually as the molecular weight of the obtained fractions reduced, indicating that the low molecular weight DOM was the major THMs precursor in the disinfection process with chlorine and chlorine dioxide. The results suggest that THMs in source water of Pearl River could be effectively reduced when pollution of human activity is greatly controlled. Between the two disinfection processes tested, chlorine dioxide produced less THMs than chlorine in this study.
AB - River water sample was collected from Guangzhou section of the Pearl River to investigate soluble organic fractions and formation of trihalomethane (THMs) after chlorine and chlorine dioxide treatments. The water sample was passed through Amicon® YC-05, YM-1, YM-3, YM-10, YM-30, YM-100 and ZM-500 series membranes after a pre-treatment. The molecular weight distribution and the specific ultra-violet absorbance (SUVA254) of each fraction obtained from membrane were analyzed, and these fractions were further disinfected with chlorine and chlorine dioxide. The results showed that reverse osmosis (RO) fraction contained mainly dissolved organic matter (DOM) from the water sample, suggesting that the water has been highly contaminated by anthropogenic activities. Meanwhile, the THMs concentration and SUVA254 increased gradually as the molecular weight of the obtained fractions reduced, indicating that the low molecular weight DOM was the major THMs precursor in the disinfection process with chlorine and chlorine dioxide. The results suggest that THMs in source water of Pearl River could be effectively reduced when pollution of human activity is greatly controlled. Between the two disinfection processes tested, chlorine dioxide produced less THMs than chlorine in this study.
KW - Chlorine
KW - Chlorine dioxide
KW - Disinfection by-products (DBPs)
KW - Dissolved organic matter (DOM)
KW - Drinking water
UR - http://www.scopus.com/inward/record.url?scp=33747454985&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2005.10.032
DO - 10.1016/j.jhazmat.2005.10.032
M3 - 文章
C2 - 16298049
AN - SCOPUS:33747454985
SN - 0304-3894
VL - 134
SP - 60
EP - 66
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - 1-3
ER -