活性炭催化氧化预处理PTA废水  

PRETREATMENT OF PTA WASTEWATER BY CATALYTIC OXIDATION OF ACTIVATED CARBON

作　　者：宋天顺[1] 张利民[2] 祝社民[1] 吴海锁[2] 陈英文[1] 黄昱晖[1] 沈树宝[1] 

机构地区：[1]南京工业大学制药与生命科学学院,南京210009 [2]江苏省环境科学研究院,南京210036

出　　处：《离子交换与吸附》2006年第3期208-215,共8页Ion Exchange and Adsorption

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);江苏省环境研究院重点实验室开放课题KF-01

摘　　要：研究了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16g/L,曝气2h,最佳pH值为4,在此催化氧化的条件效果最佳,对COD的去除率可达64%,活性炭通过碱再生可重复使用。此外,色谱分析的结果证明,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。成本核算表明,活性炭催化氧化是一种PTA废水的高效廉价预处理技术。In this paper, the pretreatment of PTA wastewater by catalytic oxidation of activated carbon was investigated. The experimental results showed that the best treatment result was obtained under the oxidation condition of 16g activated carbon/L, aerating 2 hours and pH=4, the COD removal rate exceeded 64% 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 was an efficient pretreatment method for PTA wastewater.

关 键 词：PTA 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]