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Removal of Pharmaceuticals and Illicit Drugs from Wastewater Due to Ferric Dosing in Sewers

机译：从下水道中给药时，从废水中除去药品和非法药物

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Ferric (Fe3+) salt dosing is an efficient sulfide control strategy in the sewer network, with potential for multiple benefits including phosphorus removal in the biological reactors and sulfide emission control in the anaerobic digesters of wastewater treatment plant (WWTP). This paper extends the knowledge on the benefit of iron dosing by exploring its impact on the fate of organic micropollutants (MPs) in the wastewater using sewer reactors simulating a rising main sewer pipe. The sulfide produced by the sewer biofilms reacted with Fe3+ forming black colored iron sulfide (FeS). Among the selected MPs, morphine, methadone, and atenolol had 90% initial rapid removal within 5 min of ferric dosing in the sewer reactor. The ultimate removal after 6 h of retention time in the reactor reached 93-97%. Other compounds, ketamine, codeine, carbamazepine, and acesulfame had 30-70% concentration decrease. The ultimate removal varied between 35 and 70% depending on the biodegradability of those MPs. In contrast, paracetamol had no initial removal. The rapid removal of MPs was likely due to adsorption to the FeS surface, which is further confirmed by batch tests with different FeS concentrations. The results showed a direct relationship between the removal of MPs and FeS concentration. The transformation kinetics of these compounds in the reactor without Fe3+ dosing is in good agreement with biodegradation associated with the sewer biofilms in the reactor. This study revealed a significant additional benefit of dosing ferric salts in sewers, that is, the removal of MPs before the sewage enters the WWTP.
机译：铁（Fe3 +）盐给药是下水道网络中有效的硫化物控制策略，具有多种益处，包括在废水处理厂的厌氧消化器中的生物反应器和硫化物排放控制中的磷去除。本文通过探讨了在废水中使用下水道的升高的主下水道探讨了废水中的废水中的有机微量润湿剂（MPS）的命运的影响，扩展了对铁给药的益处的知识。由下水道生物膜产生的硫化物与Fe3 +形成黑色硫化铁（FES）反应。在所选的MPS，吗啡，美沙酮和Atenolol中，在下水道反应器中的5分钟内初始快速去除。在反应器中保持时间6小时后的最终除去达到93-97％。其他化合物，氯胺酮，可待因，卡吡嗪和乙酰胺浓度降低30-70％。根据这些MP的生物降解性，最终去除在35和70％之间变化。相反，扑热息痛没有初始去除。由于对FES表面的吸附，可能是由于对FES表面的吸附而快速去除，这通过具有不同FES浓度的分批测试进一步证实。结果表明，去除MPS和FES浓度之间的直接关系。没有Fe3 +给药的反应器中这些化合物的转化动力学与反应器中的下水道生物膜相关的生物降解良好。本研究表明，在下水道中使用过氧化铁盐的显着额外额外的益处，即在污水进入WWTP之前的议员去除MP。

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  • 来源
    《Environmental Science & Technology》 |2019年第11期|6245-6254|共10页
  • 作者

    Kulandaiyelu Jagadeeshkumar; Gao Jianfa; Song Yarong; Shrestha Sohan; Li Xuan; Li Jiaying; Doederer Katrin; Keller Jurg; Yuan Zhiguo; Mueller Jochen F.; Jiang Guangming;

  • 作者单位

    Univ Queensland Adv Water Management Ctr St Lucia Qld 4072 Australia;

    Univ Queensland Queensland Alliance Environm Hlth Sci Woollongabba Qld 4072 Australia;

    Univ Queensland Adv Water Management Ctr St Lucia Qld 4072 Australia;

    Univ Queensland Adv Water Management Ctr St Lucia Qld 4072 Australia;

    Univ Queensland Adv Water Management Ctr St Lucia Qld 4072 Australia;

    Univ Queensland Adv Water Management Ctr St Lucia Qld 4072 Australia;

    Univ Queensland Adv Water Management Ctr St Lucia Qld 4072 Australia;

    Univ Queensland Adv Water Management Ctr St Lucia Qld 4072 Australia;

    Univ Queensland Adv Water Management Ctr St Lucia Qld 4072 Australia;

    Univ Queensland Queensland Alliance Environm Hlth Sci Woollongabba Qld 4072 Australia;

    Univ Queensland Adv Water Management Ctr St Lucia Qld 4072 Australia|Sichuan Univ Arts & Sci Dept Chem & Chem Engn Dazhou Sichuan Peoples R China|Univ Wollongong Sch Civil Min & Environm Engn Wollongong NSW 2522 Australia;

  • 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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