期刊
WATER RESEARCH
卷 36, 期 5, 页码 1135-1142出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0043-1354(01)00292-5
关键词
attached immobilization; nonwovens; p-nitrophenol (PNP); biodegradation
p-Nitrophenol (PNP) is a toxic compound that enters the environment during, manufacturing and processing of a variety of industrial products. This study demonstrates the use of inexpensive and durable nonwovens as a biomass retainer for the biological degradation of p-nitrophenol. An essential aspect of p-nitrophenol degradation was the cultivation of p-nitrophenol degrading biomass prior to its attachment on the nonwovens. Results of continuous flow experiments demonstrated that using the nonwovens could attain consistent high-rate p-nitrophenol degradation. 500 mg-PNP/L was completely degraded at a hydraulic retention time of 11 It. Specific and volumetric p-nitrophenol loading rates were determined to be 165mg-PNP/g-MLSS/d and 1.6g-PNP/L/d, respectively. Nitrite released from p-nitrophenol breakdown was not completely nitrified to nitrate. Characteristics of p-nitrophenol degrading sludge were also investigated. (C) 2002 Elsevier Science Ltd. All rights reserved.
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