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首页> 外文期刊>Environmental Science & Technology >Performic Acid Disinfection of Municipal Secondary Effluent Wastewater: Inactivation of Murine Norovirus, Fecal Coliforms, and Enterococci
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Performic Acid Disinfection of Municipal Secondary Effluent Wastewater: Inactivation of Murine Norovirus, Fecal Coliforms, and Enterococci

机译：市政二级污水废水的表演酸消毒：鼠诺维病毒，粪大肠癌和肠球菌失活

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摘要

Performic acid (PFA) is an emerging disinfectant to inactivate bacterial and viral microorganisms in wastewater. In this study, the inactivation kinetics of murine norovirus (MNV) by PFA, in phosphate buffer and municipal secondary effluent wastewater, are reported for the first time. PFA decay followed first-order kinetics and the inactivation of MNV was governed by the exposure of microorganisms to PFA, i.e., the integral of the PFA concentration over time (integral CT or ICT). The extension of the Chick-Watson model, in the ICT domain, described well the reduction of MNV by PFA, with determined ICT-based inactivation rate constants, k_d, of 1.024 ± 0.038 L/(mg·min) and 0.482 ± 0.022 L/(mgmin) in phosphate buffer and wastewater, respectively, at pH 7.2. Furthermore, the simultaneous PFA inactivation of MNV and fecal indicators indigenously present in wastewater such as fecal coliforms and enterococci showed that 1-log reduction could be achieved with ICT of 2, 1.5, and 3.5 mg-min/L, respectively. When compared with the most commonly used peracid disinfectant of municipal wastewater, peracetic acid (PAA), the ICT requirements determined using the fitted ICT-based kinetic models were ~20 times higher for PAA than PFA, indicating a much stronger inactivation power of the PFA molecule.
机译：表演酸（PFA）是一种在废水中灭活细菌和病毒微生物的新兴消毒剂。在本研究中，首次报道了PFA在磷酸盐缓冲液和城市二级污水废水中通过PFA的鼠诺维病毒（MNV）的灭活动力学。 PFA衰减跟随一阶动力学和MNV的失活被微生物暴露于PFA，即PFA浓度随时间的积分（积分CT或ICT）。 Chick-Watson模型的延伸，在ICT结构域中描述了PFA的MNV的减少，具有确定的基于ICT的灭活率常数，K_D，为1.024±0.038 L /（MG·MIN）和0.482±0.022 L. /（Mgmin）分别在pH7.2处分别在磷酸盐缓冲液和废水中。此外，在废水中诸如粪便大肠杆菌和肠球菌的废水中未存在的MNV和粪便指标的同时PFA灭活表明，可以分别使用2,1.5和3.5mg-min / L的ICT来实现1-伐地减少。与市政废水最常用的过酸消毒剂相比，过乙酸（PAA），使用拟合的ICT的动力学模型测定的ICT要求比PFA的PAA为〜20倍，表明PFA的更强大的失活功率分子。

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  • 来源
    《Environmental Science & Technology》 |2020年第19期|12761-12770|共10页
  • 作者

    Roberta Maffettone; Kyriakos Manoli; Domenico Santoro; Karla D. Passalacqua; Christiane E. Wobus; Siva Sarathy;

  • 作者单位

    Department of Chemical and Biochemical Engineering University of Western Ontario London Ontario N6A 5B9 Canada Trojan Technologies London Ontario NS V 4T7 Canada;

    Department of Chemical and Biochemical Engineering University of Western Ontario London Ontario N6A 5B9 Canada Trojan Technologies London Ontario N5 V 4T7 Canada;

    Department of Chemical and Biochemical Engineering University of Western Ontario London Ontario N6A SB9 Canada USP Technologies London Ontario N5 V 4T7 Canada;

    Department of Microbiology and Immunology University of Michigan Ann Arbor Michigan 48109 United States;

    Department of Microbiology and Immunology University of Michigan Ann Arbor Michigan 48109 United States;

    Department of Chemical and Biochemical Engineering University of Western Ontario London Ontario N6A 5B9 Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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