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  

Effects of Different Co-substrates on Degradation of Nitrophenols Using Upflow Anaerobic Sludge Bed(UASB)Reactors

作　　者：姜丽娜[1] 佘宗莲[1] 金春姬[1] 王磊[1] 于静[1] 

机构地区：[1]中国海洋大学环境科学与工程学院海洋环境与生态教育部重点实验室,青岛266100

出　　处：《环境科学》2007年第10期2230-2235,共6页Environmental Science

基　　金：国家自然科学基金项目(20307009)

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2500 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.The removal efllciencies 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 efllciencies 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 eflqciencies 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.

关 键 词：UASB 3-硝基酚 2 6-二硝基酚 共基质 

分 类 号：X703.1[环境科学与工程—环境工程]