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    于洪涛

    • 教授     博士生导师   硕士生导师
    • 性别:男
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:环境学院
    • 学科:环境工程
    • 办公地点:环境楼B303
    • 电子邮箱:yuhongtao@dlut.edu.cn

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    Fabrication of a double-helical photocatalytic module for disinfection and antibiotics degradation

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    论文类型:期刊论文

    发表时间:2019-09-01

    发表刊物:WATER ENVIRONMENT RESEARCH

    收录刊物:SCIE、EI、PubMed

    卷号:91

    期号:9

    页面范围:918-925

    ISSN号:1061-4303

    关键字:continuous-flowing reactor; degradation; disinfection; double helical module; photocatalysis

    摘要:A double-helical photocatalytic module was fabricated via an annealing process following an anodic oxidation procedure, and installed into a commercial UV sterilizer to structure continuous-flow photocatalytic device. Benefiting from the superior mass transfer of double-helical structure to common flat plate or corrugated plate, as well as the improved adhesion between Ti support and TiO2 layer, the photocatalytic device displayed potential in practical disinfection and degradation of organics. During photocatalytic disinfection process with 21 mJ/cm(2) of UV dose, the concentration of Escherichia coli decreased from 1.71 x 10(7) CFU/L (typical for municipal wastewater) in influent to 2,720 CFU/L in effluent water, which met the wastewater discharged standard of China. Escherichia coil reactivation ratio for the photocatalytic device was only one-tenth of that for UV sterilizer. Furthermore, taking phenol, bisphenol A, and four antibiotics as targets, the device was demonstrated to promote the degradation of photodegradable pollutants via photocatalysis. These results highlight a feasibility of photocatalytic technology as a supporting role in practical wastewater treatment. (C) 2019 Water Environment Federation