摘要
对比了UV/PS(Persulfate,PS)和UV/H2O2工艺对甲氧苄氨嘧啶(Trimethoprim,TMP)的降解效果,考察了氧化剂浓度、TMP初始浓度、溶液p H值、水中共存阴离子和腐殖酸对降解效果的影响。实验结果表明,两种工艺都能有效去除水中低浓度的TMP,其降解速率都随氧化剂浓度的增加、目标污染物浓度的降低而增加;中性以及酸性条件有利于TMP的降解;水中共存阴离子对两种工艺降解TMP产生了不同的影响;腐殖酸对TMP的降解起明显的抑制作用。
UV/H2O2 and UV/PS have been used for the degradation of TMP in the water, and the degradation efficiencies were compared. Some affecting factors such as oxidant dosage, initial TMP concentrations, pH, coexisting anions and humic acid have also been investigated in this study. The result showed that both technologies could remove low concentrations of TMP in the water, the degradation rate increased as the initial TMP concentrations decreased and the oxidant dosage increased. The neutral or acidic conditions were favored for the degradation of TMP. The existing of anions had different effect on TMP degradation by the two technologies which slows down the TMP degradation to different degrees. The degradation performance was inhibited by humic acid obviously.
出处
《四川环境》
2015年第5期1-6,共6页
Sichuan Environment
基金
国家科技重大专项资助(2012ZX07403-001)
住房和城乡建设部研究开发项目(2009-K7-4)
