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Removal of Dissolved Organic Nitrogen (DON) in Waterwork and it’s Correlation with Water Qualities

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Abstract:

Removal of dissolved organic nitrogen (DON) were investigated in treatment line including conventional treatments (coagulation, sedimentation and rapid sand filtration) and advanced treatments (pre-ozonation, high density clarification and V-filter) in Yangshupu waterwork. The correlation between DON and water qualities including UV254, DOC, NO3--N, NH4+-N and SUVA in water samples were studied as well. According to the results, removal efficiency of DOC, UV254 and DON after conventional treatment were 25.1%, 43.3% and 31.1% respectively. Pre-ozonation could increase the concentration of DON in samples. Removal efficiency of DOC, UV254 and DON were 24.5%, 40.2% and 29.6%, respectively, after the advanced treatment. The results from linear regression analysis showed that DON is moderately correlated to UV254 and DOC, with the correlatition confficent of 0.807 and 0.775 respectively. However, DON showed slightly correlated with NO3--N, NH4+-N and SUVA.

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Periodical:

Advanced Materials Research (Volumes 610-613)

Pages:

2445-2450

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.610-613.2445

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Online since:

December 2012

Authors:

Chen Yan Hu, Jing Zhang, Zhen Xing Zhou, Fei Shang

Keywords:

Correlation, Dissolved Organic Nitrogen (DON), Drinking Water, Organics

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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