Cu<sup>2+</sup>在混凝中对富里酸氯化消毒副产物的影响

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Abstract

In the experiment, aluminum sulfate was used as coagulant and Cu²⁺ was added during the coagulation of fulvic acid (FA) to test its influence on turbidity, dissolved organic carbon (DOC) removal efficiency and the chlorination disinfection by-products formation potential (DBPsFP) of it. Three dimensional fluorescence spectroscopy(3DEEM) and ultrafiltration membrane classification were used to characterize the outlet. It was shown that Cu²⁺ could improve the removal of hydrophilic component and aromatic structure by complexation reaction during coagulation. The formation potential of dichloroacetic acid(DCAAFP) and trichloromethane (TCMFP) could be significantly reduced when pH was higher than 7. The results showed that Cu²⁺-coagulation was more likely to affect the molecular weight fraction which was between 10~30kDa in FA, and improved the removal efficiency of DOC and DBPs formation potential.

Key words： coagulation fulvic acid (FA) dissolved organic carbon (DOC) disinfection by-products (DBPs)

Received: 20 May 2019

PACS:

X131.2

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	Articles by authors
	LIU Wei-nan
	LI Zheng
	LIU Li-chao
	LI Jing

Cite this article:

LIU Wei-nan,LI Zheng,LIU Li-chao等. Effect of Cu²⁺ on the formation potential of chlorinated by-products of fulvic acid in coagulation[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(1): 174-181.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I1/174

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