UV/Oxone降解水中扑热息痛的效能及影响模型

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Abstract This work reported the efficiency of degradation ACE used three degradation processes (i.e. UV、oxone and UV/Oxone). Meanwhile, the kinds of oxidative active substances and contribution in the system were identified and calculated. Response surface curve method (RSM) was used to study the comprehensive effect of UV/Oxone on ACE removal under five factors including HCO₃^-, Cl^-, NO₃^-, pH and T and three levels. Furthermore, three kinds of actual water were chosen as the quality indicator of raw water to evaluate the difference between actual degradation values and model predictive values of degradation ACE by UV/Oxone. Finally, the degradation efficiencies of three processes were evaluated. The results showed that the degradation rates of UV、oxone and UV/Oxone were 2.1%, 53.7% and 98.3%, respectively. Identification experiments of active substances found that three active substances were produced by UV activation of oxone, such as ^•OH、SO₄^•- and reactive chlorine, and the contribution of three active substances to ACE degradation were 37.05%、19.22% and 43.73%, respectively. The regression equation of ACE degradation was obtained by RSM. The p value was less than 0.0001, the missing fitting term was not obvious and R²>0.8, which indicated that the model was highly reliable. Actual waters, as degradation substance, were selected to compare the actual and model predicted and found that two values were matched basically. Compared with the efficiency of two different processes, the result showed that UV/Oxone was an effective, rapid and feasible degradation process with the lowest energy consumption at the same time and degradation rate.

Key words： acetaminophen UV/Oxone dynamics RSM effectiveness evaluation

Received: 12 February 2019

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X703

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	Articles by authors
	ZHANG Meng-wen
	CHEN Ju-xiang
	YANG Jing
	GAO Nai-yun

Cite this article:

ZHANG Meng-wen,CHEN Ju-xiang,YANG Jing等. Efficiency and effect model of acetaminophen degradation by UV/Oxone[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(8): 3293-3299.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I8/3293

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