Comparison of ciprofloxacin degradation in reclaimed water by UV/chlorine and UV/persulfate advanced oxidation processes

被引：27

作者：

Yang, Haiyan ^{[1
]}

Li, Yi ^{[1
]}

Chen, Yihua ^{[2
]}

Ye, Guihong ^{[1
]}

Sun, Xiaobo ^{[1
]}

机构：

[1] Beijing Univ Civil Engn & Architecture, Sino Dutch R&D Ctr Future Wastewater Treatment Te, Key Lab Urban Stormwater Syst & Water Environm, Minist Educ, Beijing 100044, Peoples R China

[2] Harbin Inst Technol, Sch Civil & Environm Engn, Shenzhen, Guangdong, Peoples R China

来源：

WATER ENVIRONMENT RESEARCH | 2019年 / 91卷 / 12期

关键词：

active radicals; ciprofloxacin; degradation rate; reclaimed water; UV; chlorine; persulfate; PERSONAL CARE PRODUCTS; FLUOROQUINOLONE ANTIBIOTICS; PERSULFATE OXIDATION; ANTIBACTERIAL AGENTS; HYDROXYL RADICALS; UV; KINETICS; REMOVAL; PHARMACEUTICALS; TOXICITY;

D O I：

10.1002/wer.1144

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study analyzed the ciprofloxacin (CIP) degradation in real reclaimed water through UV/chlorine and UV/persulfate (UV/PS) advanced oxidation processes. The influence of oxidant dosage, pH, inorganic anions, and humic acid (HA) on the oxidation capacity and performances of various UV-based processes was investigated. The results revealed that the CIP degradation rate constants in the UV/chlorine and UV/PS processes were higher than that in UV/H2O2, direct-UV, NaClO, and K(2)S(2)O(8 )processes. The removal rate peaked at 0.1 mM oxidant dosage for 1 mu M CIP, while the rate constant was highest at pH 5 (UV/chlorine) and pH 7 (UV/PS). The presence of Cl-, HCO3-, and HA inhibited CIP removal in both processes. The degradation rate observed in reclaimed water was high, but still lower than that in laboratory water by 9.2 (UV/chlorine) and 9 (UV/PS) times. The UV/chlorine and UV/PS processes were found to be more cost-effective and hence more feasible in removing refractory compounds in reclaimed water. Practitioner points The addition of oxidant and UV irradiation together had a pronounced promotion in the degradation of CIP. Cl-center dot and SO4 center dot- had potential importance for enhancing CIP degradation in UV/chlorine and UV/PS process, respectively. UV/chlorine and UV/PS processes exhibited effective removal capability to CIP in real reclaimed water.

引用

页码：1576 / 1588

页数：13

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