| 不同共基质条件下上流式厌氧污泥床反应器中硝基酚的降解研究 |
| 摘要点击 1700 全文点击 754 投稿时间：2006-11-09 修订日期：2007-01-13 |
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| 中文关键词 UASB 3-硝基酚 2,6-二硝基酚 共基质 |
| 英文关键词 UASB 3-nitrophenol 2,6-dinitrophenol co-substrates |
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| 中文摘要 |
| 用实验室规模的2个UASB反应器，分别研究了以葡萄糖和乙酸钠为共基质条件下3-硝基酚(3-NP)和2,6-二硝基酚（2,6-DNP）的降解效果.结果表明，对3-NP的降解，用葡萄糖作共基质的效果明显好于以乙酸钠为共基质；而对2,6-DNP的降解，乙酸钠作共基质效果更好.在含3-NP废水厌氧降解实验中，保持进水COD浓度为2 500 mg/Ｌ左右，HRT为26 h，以葡萄糖为共基质时，进水3-NP浓度可提高到254.6 mg/Ｌ，3-NP的去除率保持在99.0%以上；以乙酸钠为共基质时，保持HRT为30 h，3-NP浓度可提高到71.6 mg/Ｌ，3-NP去除率在90.0%以上.在含2,6-DNP废水厌氧降解实验中，保持进水COD浓度在2 500 mg/Ｌ左右，HRT为35 h，以葡萄糖为共基质时，2,6-DNP浓度可提高到170.0 mg/Ｌ，2,6-DNP的去除率保持在98.0%以上；以乙酸钠为共基质时，保持HRT为30 h，2,6-DNP最大浓度可提高到189.5 mg/Ｌ，2,6-DNP的去除率在99.2%以上. |
| 英文摘要 |
| The removal efficiencies of 3-nitrophenol (3-NP) and 2,6-dinitrophnol (2,6-DNP) were investigated in two lab-scale upflow anaerobic sludge bed (UASB) reactors using two different co-substrates. Initially, glucose was used as co-substrate and followed by sodium acetate. The results showed that glucose was found to be a better co-substrate for 3-NP degradation compared to sodium acetate. While for the degradation of 2,6-dinitrophenol, sodium acetate was better. For the study of 3-NP degradation, input COD concentration was kept as 2 500 mg/Ｌ and hydraulic retention time (HRT) was kept as 26 h with glucose as co-substrate. Maximum 3-NP concentration was 254.6 mg/Ｌ and 3-NP removal efficiencies were always more than 99.0%. While HRT was 30 h with sodium acetate as co-substrate, maximum 3-NP concentration was 71.6 mg/Ｌ and over 90.0% 3-NP removal efficiencies could be obtained. For the study of 2,6-DNP degradation, HRT was 35 h using the same input COD concentration as 3-NP degradation. The maximum 2,6-DNP concentration was 170.0 mg/Ｌ and 2,6-DNP removal efficiencies were always more than 98.0% using glucose as co-substrate. While HRT was 30 h with sodium acetate as co-substrate, maximum 2,6-DNP concentration was 189.5 mg/Ｌ and over 99.2% 2,6-DNP removal efficiencies could be obtained. |
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