Mechanism, kinetics and DBPs formation of UV/NH2Cl process on sulfathiazole removal in aqueous solution

被引：3
作者：
Zhang, Jiayu [1 ]
Wang, Qiongfang [1 ]
Dong, Lei [2 ,3 ]
Rao, Pinhua [1 ]
Zhang, Xin [3 ]
Gao, Naiyun [2 ]
Yin, Xiaoying [1 ]
机构：
[1] Shanghai Univ Engn Sci, Coll Chem & Chem Engn, Shanghai 201600, Peoples R China
[2] Tongji Univ, State Key Lab Pollut Control & Reuse, Shanghai 200092, Peoples R China
[3] Shanghai Municipal Engn Design Inst Grp Co Ltd, Shanghai 200092, Peoples R China
来源：
WATER RESOURCES AND INDUSTRY | 2023年 / 30卷
基金：
中国国家自然科学基金;
关键词：
Sulfathiazole; UV/NH2Cl; Degradation; Disinfection by-products; Mechanism; Water treatment; DEGRADATION; UV; OXIDATION; UV/CHLORINE; PATHWAYS; WATER; AOPS; UV/MONOCHLORAMINE; EFFLUENT; PRODUCTS;
D O I：
10.1016/j.wri.2023.100221
中图分类号：
TV21 [水资源调查与水利规划];
学科分类号：
081501 ;
摘要：
In this paper, UV/NH2Cl process was used to research the degradation of sulfathiazole (STZ) and the formation of disinfection by-products (DBPs) after disinfection were detected. UV and NH2Cl process showed a synergistic effect on the removal of STZ. Natural organic matter and CO32 inhibited the STZ degradation, NO3 promoted the degradation of STZ, whereas NH2Cl concentration, HCO3 and Cl had dual effects on the removal of STZ. The removal of STZ by UV/NH2Cl was slightly influenced by pH. The contribution of reactive chlorine species and reactive nitrogen species to STZ degradation was significantly higher than that of HO center dot. Possible STZ degradation pathways were presented by analyzing intermediate products. In addition, the pretreatment of UV/NH2Cl significantly reduced the formation of DBPs during NH2Cl or NaClO disinfection. In conclusion, UV/NH2Cl process is an effective water treatment technology and can be well applied for practical purposes.
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页数：12
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