矿化垃圾吸附-Fenton-NaClO氧化深度处理垃圾渗滤液  

The Experimental Study on the Treatment of Landfill Leachate by Mineralized Refuse Adsorption-Fenton-NaClO Oxidation

作　　者：聂发辉[1] 刘荣荣[1] 李文婷[1] 刘占孟[1] 

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013

出　　处：《水处理技术》2016年第2期63-67,71,共6页Technology of Water Treatment

基　　金：国家自然科学基金(51168013);国家科技支撑项目(2014BAC04B03)

摘　　要：采用矿化垃圾吸附-Fenton-NaClO氧化联合深度处理垃圾渗滤液。吸附实验在矿化垃圾粒径为<2 mm,用700℃焙烧改性的矿化垃圾作为吸附剂,投加量为60g/L、pH=9的条件下进行,COD和氨氮的去除率分别达到最大的53.15%和78.77%;吸附出水在初始pH为6、H_2O_2投加量为60 mmol/L、n(H_2O_2):n(Fe^(2+))为4:1、反应时间为75 min的条件下进行Fenton氧化,COD和氨氮的去除率分别达到最大的52.37%和11.5%;Fenton氧化出水在NaClO,投加量为60 mmol/L、pH为6、温度为50℃和反应时间为60 min的条件下进行NaClO氧化,NaClO对COD和氨氮的去除率分别达到最高的81.86%和98.96%,此时COD为78 mg/L,氨氮的质量农度为0.42mg/L,均可满足GB16889-2008规定的排放标准。Mineralized refuse adsorption-Fenton-NaCIO oxidation were used to treat landfill leachate.The highest removal rate of COD and ammonia nitrogen reached 53.15%and 78.77%respectively,under the conditions of particle size less than 2 mm,calcination temperature of 700℃,the dosage of 60 g/L and pH of 9.With optimum pH of 6.0,optimum dosages of H2O2 of 60 mmol/L and n（H2O2）：n（Fe^（2＋）） of 4：1,the highest removal of COD and ammonia nitrogen were found 52.37%and 11.5%after 75 min of the Fenton treatment.The removal rate of COD and ammonia-nitrogen reached highest under the conditions of NaClO dose of 60 mmol/L,pH of 6.0,temperature of 50℃ and reaction time of 60 min,and the effluent concentration were reduced to 78 mg/L and 0.42 mg/L that met the prescribed discharge standards of landfill pollution control standard（GB 16889—2008）.

关 键 词：矿化垃圾 吸附 FENTON氧化 NaClO氧化 垃圾渗滤液 

分 类 号：X703.1[环境科学与工程—环境工程]