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高藻饮用水系统中羟基自由基降解诺氟沙星
Authors
余忆玄
吉志新
+4 more
姚丽
李季
杨小桐
白敏冬
Publication date
20 December 2018
Publisher
Doi
Cite
Abstract
在厦门翔安水厂12000t/d常规饮用水处理工艺的基础上建立了\"混凝沉淀-砂滤-·OH/NaClO氧化降解抗生素及消毒-清水池\"的处理系统,在九龙江流域高藻爆发期完成了工程化试验.结果表明,当砂滤出水总藻密度为2.04×103cells/mL时,注入相同氧化剂剂量0.5mg/L处理20s后,·OH将56ng/L的诺氟沙星降解至未检出,而NaClO仅降解至54ng/L.·OH在氧化降解抗生素的同时能杀灭全部藻细胞.根据HPLC-MS/MS检测到的降解中间产物分析,·OH氧化降解诺氟沙星通过进攻哌嗪环、萘啶环和氟原子破坏药效团,直至矿化为CO2和H2O.·OH消毒后不产生消毒副产物,检测的106项指标均达到国家《生活饮用水卫生标准》(GB 5749-2006),为我国高藻饮用水中抗生素的安全处理提供技术支撑.国家重大科研仪器研制项目(NSFC:61427804);;科技部创新人才推进计划重点领域创新团队(2015RA4008);;国家自然科学基金资助重大研究计划(91441132
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Last time updated on 10/06/2020