作　　者： (严静娜）; (张小寒）; (任源）;

机构地区： 华南理工大学环境与能源学院,广东广州510006

出　　处： 《水处理技术》 2017年第9期56-61,66,共7页

摘　　要： 探索氯消毒剂氧化去除污水处理厂中药物与个人护理品(PPCPs)的可行性,以水体中被频繁检出的双氯芬酸(DCF)为目标污染物,以NaClO为消毒剂,考察DCF在氯化消毒过程中的反应动力学以及水体中氮素、有机物对DCF去除效果的影响规律。结果表明,NaClO氧化降解DCF过程符合2级动力学;p H<5时氧化反应速率显著增高;温度对该氧化反应的影响明显且符合Van't Hoff规律,k_(app)随着温度的升高而增大。反应体系中的无机盐离子NO_2-、NH_4+以及有机物HA、十二烷基苯磺酸钠(SDBS)和Tween-80,会抑制DCF氯氧化降解,抑制效果随含量升高而加强。可为氯消毒工艺处理含PPCPs尤其是非甾体抗炎药物的生活污水提供科学基础。 In order to explore the feasibility of pharmaceuticals and personal care products （PPCPs） removal from wastewater treatment plants with chlorine oxidants, Diclofenac （DCF）, one of frequently detected PPCPs in water, and sodium hypochlorite were selected as the target pollutant and oxidant, respectively. The chlorination kinetic of DCF and the effect of the coexisting substances including nitrogen and organic matter on the DCF removal during free chlorine disinfection process were investigated. The results showed that the degradation of DCF by sodium hypochlorite followed the second order kinetics. When pH〈5, the reaction rate constant was significantly increased. The removal rate of DCF increased along with temperature increasing, which followed Van＇t Hoff Rule. Furthermore, NO2-, NH4＋, HA, SDBS and Tween-80 showed significant inhibition to DCF chlorine oxidation with their content increasing. This paper provided scientific foundation for treating PPCPs containing wastewater, especially non-steroidal anti-inflammatory drugs.

关 键 词： 双氯芬酸 氯氧化 动力学 环境因子