电凝聚臭氧化耦合工艺混凝剂水解形态分析——基于单/双电极排布

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Abstract In this paper, the hydrolysed coagulant species in the electro-hybrid ozonation-coagulation process (E-HOC) were analysed at different initial pH and different electrode arrangement conditions, and the removal efficacy was investigated. The results showed that a higher organic matter removal efficiency was exhibited at initial pH 5in the E-HOC process. Compared with the E-HOC process with monopolar connections, the organic matter removal efficiency of the bipolar arrangement is improved by 12.29%, energy consumption is reduced by 1.74kWh/g, and Faradaic efficiency is improved by 2.37%. Ferron analysis and electrospray ionization mass spectrometry (ESI-MS) were used to analyze the hydrolysed Al species of the system. In the E-HOC process, weak acid conditions (initial pH 5) and bipolar arrangement can lead to the enhanced polymeric species generation, which improved both the coagulation and catalytic ozonation ability in the E-HOC system.

Key words： electrocoagulation (EC) electro-hybrid ozonation-coagulation process (E-HOC) bipolar connection hydrolysed species

Received: 23 September 2021

PACS:

X703.1

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	Articles by authors
	JIN Xin
	LIU Meng-wen
	XIE Xin-yue
	WEI Yi-xiong
	SONG Ji-na
	JIN Peng-kang
	WANG Xiao-chang

Cite this article:

JIN Xin,LIU Meng-wen,XIE Xin-yue等. Analysis of coagulant hydrolysed species in the electro-hybrid ozonation-coagulation process—Based on monopolar/bipolar electrode arrangement[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(4): 1643-1651.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I4/1643

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