| 二氧化氯/活性炭催化氧化处理对硝基苯甲酸废水影响因素 |
| 摘要点击 2775 全文点击 1640 投稿时间：2007-05-15 修订日期：2007-07-19 |
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| 中文关键词 二氧化氯 活性炭 有机废水 催化氧化 影响因素 |
| 英文关键词 chlorine dioxide activated carbon organic wastewater catalysis-oxidation influencing factors |
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| 中文摘要 |
| 以对硝基苯甲酸废水为处理对象，分别考察了活性炭投加量、二氧化氯投加量、pH值及反应时间等因素对二氧化氯/活性炭催化氧化工艺处理对硝基苯甲酸废水的影响.并在最优条件下，通过试验考证了该工艺作为高浓度对硝基苯甲酸废水的预处理手段，在去除废水中COD和提高可生化性（BOD５/COD）方面的综合效果.结果表明，采用ClO2与活性炭组成催化氧化体系，其处理COD为10 960 mg·L－１的对硝基苯甲酸废水，效率比单独使用二氧化氯高10%；在废水pH值为4.1时，当活性炭投加量为200 g·L－１、反应时间30 min、二氧化氯投加量为300 mg·L－１时，废水的COD降至7 100 mg·L－１，去除率达到35%，BOD５浓度提高到1 810 mg·L－１，废水的BOD５/COD值由原来的0.10提高到0.25，明显提高了废水的可生化性.因此，二氧化氯/活性炭催化氧化工艺是预处理高浓度对硝基苯甲酸废水的有效手段. |
| 英文摘要 |
| The effect of activated carbon dosage, chlorine dioxide dosage, pH value and reaction time on the paranitrobenzoic acid wastewater treatment on chlorine dioxide (ClO2) and activated carbon (AC) catalysis-oxidation technology were analyzed, and the efficiencies of the process to remove COD and increase biodegradation capacity (BOD５/COD ratio) were also examined under the optimum conditions as the pretreatment method for paranitrobenzoic acid wastewater with high-concentration. The result showed that the COD removal efficiency of the ClO2/AC catalysis-oxidation system was 10% higher than that of the system with only ClO2 when the COD concentration of paranitrobenzoic acid wastewater was 10 960 mg/L. It was also found that the COD removal was decreased by 35% with the concentration of 7 100 mg/L under the conditions of pH value 4.1, AC dosage 200 g/L, reaction time 30 min and ClO2 dosage 300 mg/L． In addition, the BOD5 concentration was increased to 1 810 mg/L and the biodegradability was improved greatly with the BOD５/COD ratio increased from 0.10 to 0.25. In a word, the chlorine dioxide (ClO2) and activated carbon (AC) catalysis-oxidation process is an effective pretreatment method for paranitrobenzoic acid wastewater treatment. |
