基于2D-COS分析的难凝聚有机物臭氧化特性研究

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Abstract Based on two dimensional correlation analysis,the characteristics of low coagulability organic matters from WWTP effluent during ozonation were studied.The results showed that coagulation can hardly remove dissolved organic matters in WWTP effluent,and most of dissolved organic matters in WWTP effluent belonged to low coagulability organic matters,which mainly contained humic-like substances.Color and UV₂₅₄ of coagulated supernatant can be removed by ozonation with removal efficiency higher than 70% and 40% respectively.However,the removal efficiency of low coagulability organic matters was low (lower than 10% removal efficiency) indicating the organic matter characteristics variation caused by ozonation.Furthermore,the fluorescence intensity could be reduced by ozonation,and the fluorescence intensity of humic-like substances exhibited highest decrease.According to the results of synchronous fluorescence spectra at different ozone dosages,two dimensional correlation spectra can be obtained.The results indicated that humic-like substances were most sensitive fractions to ozonation in low coagulability organics from WWTP,and ozone would preferentially react with humic-like substances rather than fulvic-like substances.

Key words： ozonation two dimensional correlation analysis low coagulability organics fluorescent characteristics

Received: 13 August 2017

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	Articles by authors
	JIN Xin
	HOU Rui
	SONG Ji-na
	JIN Peng-kang
	WANG Xiao-chang

Cite this article:

JIN Xin,HOU Rui,SONG Ji-na等. Ozonation characteristics of low coagulability organics based on two dimensional correlation analysis[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(3): 923-928.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I3/923

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