芬顿阴极-电凝聚臭氧气浮工艺处理MBR出水特性

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Abstract In order to remove organic matter in landfill leachate MBR effluent, the Fenton cathode-electrocoagulation ozone air flotation process was constructed with aluminum (Al) as anode and carbon polytetrafluoroethylene (C-PTFE) as cathode. The removal characteristics of this process for landfill leachate MBR membrane effluent were investigated by comparing with the conventional electrocoagulation cathode (Al and SS). When the pH5 and ozone flow were 300mL/min, the COD removal rate of Fenton cathode system was increased by 30.03% and 15.16%, respectively, compared with that of SS and Al cathode systems. According to the analysis of three-dimensional fluorescence characteristics, the C-PTFE cathode system had a good removal effect on humic acids. A typical refractory organic compound IBP (ibuprofen) was selected in MBR effluent to clarify the mechanism of organic degradation. The results showed that compared with SS cathode and Al cathode, the H₂O₂ production of C-PTFE cathode system was increased by 63.27% and 122.22%, respectively. The quenching experiment showed that ·OH was generated not only through the reaction of H₂O₂ and O₃, but also through the reaction of O₃^-and H₂O, it was proved that THE C-PTFE cathode had a certain strengthening effect on the electrocoagulation ozone flotation process, and was more conducive to the removal of organic matter.

Key words： landfill leachate the MBR effluent fenton cathode ozone air flotation the electric flocculation

Received: 07 July 2021

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X703.1

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	DIAO Yue
	YANG Chao
	JIN Xin
	SUN Hui
	JIN Peng-kang

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DIAO Yue,YANG Chao,JIN Xin等. Treatment of effluent from MBR by Fenton cathode-electrocoagulation ozone air flotation process[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(2): 728-735.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I2/728

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