Aerobic granulation for 2,4-dichlorophenol biodegradation in a sequencing batch reactor.
Aerobic granulation for 2,4-dichlorophenol biodegradation in a sequencing batch reactor.
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DOI：
10.1016/j.chemosphere.2007.05.026
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发表时间：
2007-10
期刊：
影响因子：
8.8
通讯作者：
Shu-Guang Wang;Xianwei Liu;Hua-Yong Zhang;Wen-Xin Gong;Xue-Fei Sun;B. Gao
中科院分区：
文献类型：
--
作者：
Shu-Guang Wang;Xianwei Liu;Hua-Yong Zhang;Wen-Xin Gong;Xue-Fei Sun;B. Gao
采用序批式反应器（SBR），研究了好氧颗粒污泥对2，4-二氯苯酚（2，4-DCP）的生物降解。一个关键的策略是加入葡萄糖作为共底物，并逐步增加进水2，4-DCP浓度。经39 d的操作，获得了直径在1- 2 mm范围内的稳定颗粒，形状和外观清晰。造粒后出水2，4-DCP和化学需氧量浓度分别为4.8mgl-1和41 mgl-1，去除率分别为94%和95%。颗粒中2，4-DCP的特定生物降解速率遵循Haldron底物抑制模型，并在2，4-DCP浓度为105 mgl −1时达到峰值39.6 mg 2，4-DCP g −1VSS−1h− 1。好氧颗粒污泥对2，4-DCP的高效降解表明其在处理含氯酚类和其他抑制性化学品的工业废水中具有潜在的应用前景。
Development of aerobic granules for the biological degradation of 2,4-dichlorophenol (2,4-DCP) in a sequencing batch reactor was reported. A key strategy was involving the addition of glucose as a co-substrate and step increase in influent 2,4-DCP concentration. After operation of 39d, stable granules with a diameter range of 1–2mm and a clearly defined shape and appearance were obtained. After granulation, the effluent 2,4-DCP and chemical oxygen demand concentrations were 4.8mgl−1and 41mgl−1, with high removal efficiencies of 94% and 95%, respectively. Specific 2,4-DCP biodegradation rates in the granules followed the Haldane model for substrate inhibition, and peaked at 39.6mg2,4-DCPg−1VSS−1h−1at a 2,4-DCP concentration of 105mgl−1. Efficient degradation of 2,4-DCP by the aerobic granules suggests their potential application in the treatment of industrial wastewater containing chlorophenols and other inhibitory chemicals.