Fenton氧化法同时脱硫脱硝的实验研究  

Experimental research of simultaneous desulfurization and denitrification by Fenton oxidation method

作　　者：李彩亭[1,2] 彭敦亮[1,2] 范春贞[1,2] 路培[1,2] 张巍[1,2] 

机构地区：[1]湖南大学环境科学与工程学院,长沙410082 [2]环境生物与控制教育部重点实验室(湖南大学),长沙410082

出　　处：《环境工程学报》2013年第3期1059-1064,共6页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51278177;51108169);国家"863"高技术研究发展计划项目(2011AA060803);湖南省产学研结合技术创新工程项目(2010XK6003);长沙市科技重大专项(K0902006-31)

摘　　要：应用Fenton液相氧化吸收法进行同时脱硫脱硝实验。首先,利用单因素实验,分别考察了H2O2浓度、Fe2+投加量、初始pH值、UV照射和温度对脱硫脱硝的影响。结果表明,SO2和NO去除率随着H2O2浓度和Fe2+投加量的增大而提高;初始pH对SO2和NO的去除有较大影响;UV能促进SO2和NO的净化;温度对脱硫效率影响不大,但对NO的去除有显著作用,适当升温可以提高脱硝效率。随后,考察了SO2对NO去除率的影响。通过单独脱硝和同时脱硫脱硝的对比实验发现,SO2的加入对NO的去除有一定的促进作用,Fenton法可同时获得起始约80%的脱硝效率和98%以上的脱硫效率。The Fenton liquid-phase oxidation method was used for simultaneous desulfurization and denitrification. Firstly, the effect factors, such as H2 02 content, Fe2. content, initial pH, ultraviolet irradiation （UV） and temperature, were investigated employing the single-factor experiments, respectively. The results indicated that the removal efficiency of SO2and NO increased with the rise of the H202 content and Fe2＋ concentration in the aqueous solution. Meanwhile, the variation of initial pH had great impact on the removal efficiency of SOzand NO, and the efficiency could be improved when the UV was used. Temperature has little effect on the desulfu- rization efficiency however it plays a distinct role in the removal of NO. Hence, appropriate improvement of temperature could enhance the denitrification efficiency. Subsequently, the effect of SO2 on the NO removal was also studied by comparing the experimental results between separate denitrifieation and simultaneously desulfurization- denitrification. It was shown that the existence of SO2 slightly improved the removal efficiency of NO, and the initial removal efficiency of NO was about 80% while that of SOn was more than 98%.

关 键 词：FENTON试剂 氧化 脱硫 脱硝 

分 类 号：X701.3[环境科学与工程—环境工程]