摘要:
采用UV-H2O2工艺对饮用水中内分泌干扰物邻苯二甲酸二甲酯(DMP)的去除进行研究,结果表明,单独的UV或H2O2都不能有效氧化去除DMP;而UV-H2O2联用工艺对饮用水中DMP具有很好的去除效果.在原水DMP浓度为5.1496×10-3mmol·l-1(1.0mg·l-1)左右,UV光强133.9μW·cm-2,H2O2投加量20mg·l-1和反应时间60min条件下,DMP的去除率可达到97.8%.探讨了反应速率常数随影响因素变化的规律,其中H2O2浓度、pH值、DMP初始浓度和本底TOC值对该工艺去除DMP的影响较大.
Abstract:
The removal performances of dimethyl phthalate(DMP)in drinking water using UV-H2O2combinated process was introduced in this paper.The results showed that,the DMP could not be effectively removed by UV radiation or H2O2 oxidation alone,while UV-H2O2 process could achieve quite good removal efficiency.As the initial concentration of DMP about 5.1496×10-3 mmol·l-1(1.0mg·l-1),its removal efficiency reached 97.8% under the condition that the intensity of UV radiation,the dosage of H2O2,reaction time and pH value were 133.9μW·cm-2,20mg·l-1,60 minutes,and 6.83,respectively.The kinetic effects of the intensity of UV radiation,H2O2 dosage,pH values,DMP initial concentration and TOC values on the conversion of DMP were examined respectively.Analysis of factors showed that H2O2 dosage,pH value,DMP initial concentration and TOC value have important effect on the adsorption of DMP.
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