摘要
本研究采用颗粒活性炭(Granule Activated Carbon,GAC)为填料,考察了生物流化床(Biological fluidized Bed,BFB)处理生活污水的动力学。研究结果表明,GAC-BFB内生物膜的表观产率Y OA为2.3057gVSS/gCOD,微生物细胞衰减常数K d为0.3056d-1;基质降解动力学中米氏常数K S为0.2182mg/L,反应速率常数K为13.09 mg/(l·h)。GAC-BFB的微生物生长动力学拟合方程为1/θc=2.3057q-0.3056,R2=0.9549;GAC-BFB的基质降解动力学拟合方程为1/U=0.2182*1/S+0.0764,R2=0.9972,该微生物生长动力学拟合方程及基质降解动力学拟合方程能较好的反映GAC-BFB系统的出水水质状况,本研究所获得的动力学关系和动力学参数可作为GAC-BFB系统的设计依据。
This paper studied dynamics of biological fluidized bed （ BFB ） treating domestic sewage using granular activated carbon （GAC） as filler. The result showed that the biofilm apparent yield （YoA） was 2. 3057gVSS/gCOD while decay constant d microbial cells （Kd） was O. 3056d - 1. Michaelis constant （Ks） in the matrix degradation dynamics was 0. 2182mg/1 while reaction rate constant （K） was 13.09mg/（1 · h）. The fitting equation of GAC - BFB microbial growth kinetics is 1/0c = 2. 3057q -0. 3056, R2 =0. 9549 while the fitting equation d GAC - BFB degradation kinetics is 1/U =0. 2182 ＊ 1/S ＋0. 0764, R2 = 0. 9972. Both of the fitting equations can reflect the quality of emuent in GAC - BFB system. The equations and kinetics parameters obtained in this research can be used as the design basis of GAC - BFB system.
出处
《四川环境》
2013年第5期1-5,共5页
Sichuan Environment
关键词
生物流化床
生活污水
活性炭
生物膜
表观产率
衰减常数
米氏常数
Biological fluidized bed
domestic sewage
activated carbon
biofilm
apparent yield
decay constant
mlchaelis constant
