活性炭吸附和两级Fenton氧化组合工艺处理高盐对氨基苯酚生产废水  

Treatment of wastewater with high salinity from p-aminophenol production by combined adsorption and two-staged Fenton oxidation

作　　者：杨鹏[1,2] 张伟军[2] 刘园园[2] 王东升[2] 崔凤国[1] 

机构地区：[1]东北电力大学建筑工程学院,吉林132012 [2]中国科学院生态环境研究中心环境水质学国家重点实验室,北京100085

出　　处：《环境工程学报》2015年第5期2232-2236,共5页Chinese Journal of Environmental Engineering

基　　金：北京市重点实验室科技创新基地培育与发展工程专项项目(Z131109002813040);国家杰出青年科学专项基金(51025830);基金委创新研究群体水处理微界面过程项目(51221892);国家自然科学基金资助项目(51178360)

摘　　要：采用活性炭吸附和两级Fenton氧化组合工艺对高盐度对氨基苯酚生产废水进行了处理实验研究。结果表明,p H值对活性炭去除有机物的影响较小。当活性炭投加量为4 g/L时,TOC去除率61%。分级加药可以有效提高Fenton氧化对有机物的去除效率。在温度为25℃、p H为3、30%H2O2投加量为3%(V/V)、Fe2+/H2O2摩尔比为0.05时,两级Fenton氧化处理后,出水TOC降至150 mg/L以下。此外,Fenton氧化后形成氢氧化铁污泥颗粒粒径为4.5μm,经过聚丙烯酰胺(PAM)絮凝之后,污泥的粒径明显增加,过滤特性改善。PAM絮凝效果依赖于溶液的p H值,当p H超过10后会失去作用,故在使用过程中需要严格控制溶液的p H值。Combination of activated carbon adsorption and two-staged Fenton oxidation was applied to treat high salinity p-aminophenol production wastewater. The results indicated that p H has rather limited effect on removal of organic substances by activated carbon adsorption. When dosage of activated carbon was 4 g / L,61% of TOC was removed. Organic removal efficiency of Fenton oxidation was greatly enhanced by two-staged reaction mode. TOC in effluent was reduced to below 150 mg / L,when reaction temperature,p H,30% H2O2 dosage,Fe2 +/ H2O2 molar ratio were 25℃,3,3%( V / V),0. 05,respectively. The particle size of Fenton sludge was approximately 4. 5 μm and increased significantly after PAM flocculation. However,PAM flocculation process was strongly dependent on solution p H,and PAM didn’t work at p H above 10. Consequently,the solution p H needed to be prudently controlled in practical application.

关 键 词：高盐废水 活性炭 FENTON氧化 化学絮凝 

分 类 号：X783[环境科学与工程—环境工程]