催化氧化预处理精对苯二甲酸废水  

Pretreatment of PTA wastewater by catalytic oxidation

作　　者：祝社民[1] 张利民[2] 宋天顺[3] 吴海锁[2] 陈英文[3] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009 [2]江苏省环境科学研究院,江苏南京210036 [3]南京工业大学制药与生命科学学院,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2005年第6期27-32,共6页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家自然科学基金(No.20376034);江苏省自然科学基金(No.BK2003084);江苏省社会发展项目(No.BS2003030;BS2005053);国家"十五"科技攻关项目(2004BA313B16);江苏省环境科学研究院重点实验室开放课题KF-01

摘　　要：研究了用活性炭催化氧化预处理精对苯二甲酸(PTA)废水的工艺。实验结果表明:活性炭投加量为16 g/L,曝气2 h,最佳pH值为4,在此条件下对CODC r的去除率大于60%,并且活性炭通过碱液再生可重复使用。另外,色谱分析的结果证明:在此过程中,对苯二甲酸、苯甲酸、甲基苯甲酸都有不同程度的降解,对苯二甲酸被部分氧化成苯甲酸,使得处理后的废水可生化性好。The pretreatment of PTA wastewater by catalytic oxidation of activated carbon was investigated. The experimental results were obtained under the oxidation condition of 16 activated carbon/L, aerating 2 hours and pH =4, the CODcr removal rate exceeded 60% and activated carbon can be regenerated by caustic soda for reuse. Also, chromatographic analysis data showed that terephthalic acid, benzoic acid and p-toluic acid were degraded after oxidation treatment in different degree, respectfully, terephthalic acid was partially and selectively oxidized to benzoic acid, and the biodegradability of PTA wastewater had been greatly improved. The costing illuminated that activated carbon catalytic oxidation process is an efficient pretreatment method for PTA wastewater

关 键 词：精对苯二甲酸 对苯二甲酸 活性炭 催化氧化 苯甲酸 

分 类 号：X78[环境科学与工程—环境工程]