摘要
研究了649μm、1 171μm和1 571μm三个粒径、不同初始生物量的硝化颗粒污泥90 d内的硝化性能,发现颗粒比增长速率μd、生物量比增长速率μg的变化均随粒径增大而减小.其成因在于硝化颗粒污泥内部生态环境、菌群和生物量随污泥粒径增长发生了变化,可以用引入比代谢速率后的生物量变化模型来描述这种变化.
Changes in nitrifying granule diameter had great influences on nitrifying effect. Experimental investigations based on three granule diameters of 649 μm, 1 171 μm and 1 571 μm in 90 days had shown that their nitrifying effects, average specific diameter growth rate μd and biomass growth rate μg were not the same and decreased with increasing of diameters, which resulted from the variations of ecological environment, microbe species, microbe biomass and its distribution inside the granules. The growth of granules was the results of synthesis and metabolites of biomass all over the granules. A simple dynamics model that could be used to describe the changes caused by the granules＇growth was put forward.
出处
《信阳师范学院学报（自然科学版）》
CAS
北大核心
2006年第4期434-437,共4页
Journal of Xinyang Normal University(Natural Science Edition)
基金
河南省自然科学基金项目(0511052200)
河南省教育厅自然科学基金项目(2004923046)
关键词
硝化颗粒污泥
比生长速率
比代谢速率
nitrifying granule
specific growth rate
specific metabolic rate
