Centre for Environmental Science and Engineering (CESE), Indian Institute of Technology, Bombay, Powai, Mumbai 400 076, India.
Bioresour Technol. 2012 May;111:12-20. doi: 10.1016/j.biortech.2012.01.157. Epub 2012 Feb 14.
The degradation of phenolics, heterocyclics and polynuclear aromatic hydrocarbons (PAHs) in a synthetic biomass gasifier wastewater with average COD of 1388 mg/L was studied in a three stage rotating biological contactor (RBC) using the pyrene degrader, Exiguobacterium aurantiacum and activated sludge consortia (1:3 v/v). As the organic loading rate (OLR) was varied from 3.3 to 14 g/m(2)/d, the COD removal ranged from 63.3% to 92.6%. Complete removal of all the constituents was observed at the lowest OLR of 3.3g/m(2)/d. At 24h hydraulic retention time (HRT) and OLR of 6.6g/m(2)/d complete removal of pyridine, quinoline and benzene and 85-96% removal of phenol, naphthalene, phenanthrene, fluoranthene and pyrene was observed. E. aurantiacum was found to be the dominant bacteria in the biofilm. Clark's model provided good fits to data for all the three stages of the RBC.
采用平均 COD 为 1388mg/L 的合成生物质气化废水，在三级旋转生物接触器（RBC）中，使用芘降解菌、橙色盐杆菌和活性污泥（1:3v/v）研究了酚类、杂环和多环芳烃（PAHs）的降解情况。随着有机负荷率（OLR）从 3.3 到 14g/m(2)/d 的变化，COD 去除率从 63.3%到 92.6%不等。在最低的 3.3g/m(2)/dOLR 下，观察到所有成分的完全去除。在 24h 水力停留时间（HRT）和 6.6g/m(2)/d 的 OLR 下，吡啶、喹啉和苯完全去除，苯酚、萘、菲、荧蒽和芘的去除率为 85-96%。生物膜中发现橙色盐杆菌是优势细菌。克拉克模型为 RBC 的所有三个阶段的数据提供了很好的拟合。
