作　　者： ; ; ; ; ;

机构地区： 东北电力大学建筑工程学院

出　　处： 《环境工程学报》 2015年第5期2232-2236,共5页

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 氧化 化学絮凝

领　　域： [环境科学与工程]