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中文摘要：
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.
英文摘要：
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.
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