摘要
通过 (5± 1)℃下生物膜系统 (BF)和活性污泥系统 (AS)处理生活污水长达 8个多月的运行 ,对比研究了两系统的生物活性 .结果表明 ,活性污泥不仅生物活性较高 ,而且具有更有利的传质条件 .在水力停留时间HRT =8h的条件下 ,生物膜和活性污泥胞外分泌物中的还原糖含量分别为 1.75 %及 1.9% ,挥发性污泥组分 (VSS)中的ATP含量分别为 1.0 8mg/ g及 1.4 3mg/g ;电镜检测结果表明 ,生物膜结构致密 ,而活性污泥疏松多孔有利于物质传递 .图 5表 2参
The microbial activities in biofilm system (BF) and activated sludge system (AS) were studied when they were operated at the temperature of (5±1) ℃ for more than eight months. The result showed that the activated sludge had higher microbial activities and more favored conditions of mass transferring. At the hydraulic retention time of 8 h, the sugar contents of biofilm and activated sludge were 1.75% and 1.9%, respectively, and the ATP contents in VSS were 1.08 mg/g and 1.43 mg/g,respectively. Moreover, the biofilm had more compact structure than activated sludge. Fig 5, Tab 2, Ref 14
出处
《应用与环境生物学报》
CAS
CSCD
2004年第5期647-650,共4页
Chinese Journal of Applied and Environmental Biology
基金
国家自然科学基金 (No .50 2 380 50 )资助~~
关键词
生物膜
活性污泥
低温
生物活性
biofilm
activated sludge
low temperature
microbial activity
