Removal efficiencies of natural and synthetic progesterones in hospital wastewater treated by different disinfection processes  

作　　者：Jinhui Liang Yuchen Luo Benhang Li Shiqi Liu Liansheng Yang Peng Gao Li Feng Yongze Liu Ziwen Du Liqiu Zhang 

机构地区：[1]Beijing Key Laboratory for Source Control Technology of Water Pollution,Engineering Research Center for Water Pollution Source Control and Eco-remediation,Beijing Forestry University,Beijing 100083,China

出　　处：《Frontiers of Environmental Science & Engineering》2022年第10期11-22,共12页环境科学与工程前沿（英文）

基　　金：the funding from the National Natural Science Foundation of China(Grant Nos.42177051 and 41977317).

摘　　要：Progesterones are ubiquitous in hospital wastewater(HWW)with concentrations much higher than those of estrogens and androgens.To ensure that these water systems are safe to use,disinfection is crucial during HWW treatment by providing"front line"defense against biological contaminations.Here,five disinfection processes,namely,chlorine(Cl_(2)),chlorine dioxide(ClO_(2)),ozone(O_(3)),ultraviolet(UV)),and UV/chlorine(UV/Cl_(2)),were selected to investigate their removal efficiencies for progesterones in primary filtration and secondary biological treatment effluents.There were 61 natural and synthetic progesterones detected in HWW,with the natural progesterones being the main components with a concentration of 845.51 ng/L and contributing to 75.08%of the total proge-sterones.The primary filtration treatment presented insignificant removal effects on the progesterones,while the secondary biological treatment significantly reduced the progesterone content by biode-gradation.The order of removal efficiencies of total progesterones by different disinfection processes was UV/Cl_(2)>Cl_(2)>O_(3)>ClO_(2)>UV.UV/Cl_(2)showed the highest removal efficiency against progesterones mainly due to the activation of Cl_(2)by ultraviolet(UV)photolysis,which helps open the heterocyclic,aromatic,and phenolic rings,thus accelerating progesterone degradation.In addition,the removal efficiencies of natural progesterones in the five disinfection processes were higher than those of synthetic progesterones(progesterone derivatives,19-nortestosterone derivatives,and 17α-hydroxyprogesterone derivatives).

关 键 词：Progesterones Hospital wastewater Primary filtration treatment effluent Secondary biological treatment effluent Disinfection process 

分 类 号：R187[医药卫生—流行病学]