摘要
研究了曝气生物滤池处理模拟生活污水稳态运行时反应器内生物膜的形态特征、生物量和微生物的活性变化特征,分析了生物膜及微生物种群的空间变化规律.结果表明,曝气生物滤池的生物膜形态、颜色和厚度具有沿水流方向渐变的特点,而生物膜密度则在垂直方向上分布不均匀,靠近载体表面部分空隙较大;生物量沿水流方向出现逐步递减的趋势,生物膜活性变化呈现明显的倒“V”型特点;微生物种群组成多样,食物链长且相互交叉,系统营养结构复杂,高端营养级微生物种群所占比例较高,底物利用范围大,沿水流方向可形成不同代谢类型微生物的优势群落.
Utilizing biological aerobic filter for treating simulated domestic waste water to study the character of biofilm pattern, biomass and microorganism activity change in the reactor at steady-state operation, and to analyze the spatial change rule of biofilm and microorganism population. The biofilm pattern, colour and thickness of the biological aerobic filter possessed the characteristics of gradual change along water flow. While the biofilm density distributed not evenly upwards vertically, and the part near the carrier surface had larger porosity. The biomass tended to decrease gradually along water flow. The biofilm activity change appeared obvious characteristics of reversed V shape. The composition of microorganism population was various. The food chain was long and cross each other. The system nutrition structure was complicate. The microorganism population of high nutrition occupied higher ratio. The range of utilizing the bottom matter was large. Dominant microorganism population of different metabolism type might form along the water flow.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2005年第2期214-217,共4页
China Environmental Science
基金
国家自然基金资助项目(59825106)
济南大学科技基金资助项目(Y0417)
关键词
曝气生物滤池
生物膜形态
生物量
微生物活性
微生物种群分布
biological aerobic filter
biofilm pattern
biomass
microorganism activity
microorganism population distributing
