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2009•Desalination and Water TreatmentOpen access

Characterization of NOM and THM formation potential in reservoir source water

Liu Zhi-sheng, Yin Jun, Liu Li, Yu Yu-juan

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Abstract

Resin adsorption technique with XAD-8 and XAD-4 was used to characterize the raw water from the Erlong reservoir in Jilin province, China. The NOM chemical composition sequences of the four organic fractions in the raw water, from high to low, are fulvic acid (FA) fraction, hydrophilic nonacid (HPINA) fraction, hydrophilic acid fraction(HPIA) fraction, and humic acid (HA) fraction. The experimental results show that FA is the main precursor of THMFP among the four organic fractions. However, HA or hydrophobic acid exhibits the highest chlorination activity in forming THMs. It is also found that the value of FI/DOC or SUVA and the specific THMFP have better positive correlation. Compared with former results, a part of these findings are different from some reports. It is implied that certain source water has a unique nature of NOM and DBPs.

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What this paper is about

Resin adsorption technique with XAD-8 and XAD-4 was used to characterize the raw water from the Erlong reservoir in Jilin province, China. The NOM chemical composition sequences of the four organic fractions in the raw water, from high to low, are fulvic acid (FA) fraction, hydrophilic nonacid (HPINA) fraction, hydrophilic acid fraction(HPIA) fraction, and humic acid (HA) fraction. The experimental results show that FA is the main precursor of THMFP among the four organic fractions. However, HA or hydrophobic acid exhibits the highest chlorination activity in forming THMs. It is also found that the value of FI/DOC or SUVA and the specific THMFP have better positive correlation. Compared with former results, a part of these findings are different from some reports. It is implied that certain source water has a unique nature of NOM and DBPs.

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Available abstract

Resin adsorption technique with XAD-8 and XAD-4 was used to characterize the raw water from the Erlong reservoir in Jilin province, China. The NOM chemical composition sequences of the four organic fractions in the raw water, from high to low, are fulvic acid (FA) fraction, hydrophilic nonacid (HPINA) fraction, hydrophilic acid fraction(HPIA) fraction, and humic acid (HA) fraction. The experimental results show that FA is the main precursor of THMFP among the four organic fractions. However, HA or hydrophobic acid exhibits the highest chlorination activity in forming THMs. It is also found that the value of FI/DOC or SUVA and the specific THMFP have better positive correlation. Compared with former results, a part of these findings are different from some reports. It is implied that certain source water has a unique nature of NOM and DBPs.

Key concepts: Fraction (chemistry), Chemistry, Raw water, Humic acid, Adsorption, Natural organic matter, Environmental chemistry, Fulvic acid

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