摘要
通过考察有机物生物降解和氨氮生物硝化过程中活性污泥摄氧速率(OUR)的变化规律,研究了OUR表征污泥生物活性的可行性.结果表明,随有机物和氨氮氧化反应的进行,OUR逐渐降低,当有机物、氨氮和亚硝酸氧化完毕时,OUR均出现下降幅度突然增大的现象,然后趋于稳定;OUR对系统受到的有机物和氨氮冲击负荷及硝化过程中碱度的变化有着灵敏的反映,可以揭示出有机物生物降解和氨氮生物硝化反应的进程,用OUR表征污泥的生物活性是可行的.污泥生物活性的动力学分析结果验证,有机物氧化的异养菌生长速率高于自养型硝化菌,活性动力学常数(Uom)分别为128.21,7.22mg/(g·h).
Through inspect the variation rule of oxygen uptake rate （OUR） of active sludge in the process of organic matter biodegradation and ammonia nitrogen nitrification, the feasibility of OURassessed sludge biological activity was studied. With the conduct of organic matter and ammonia nitrogen reaction, OUR lowered gradually. When the oxidation of organic matter, ammonia nitrogen and nitric acid was completed, OUR all appreaced the phenomenon of lowering range increasing suddenly, then tended to be stable. OUR had sensitive reflect of alkalinity variation in the process of nitrification and organic matter and ammonia nitrogen lash loading. OUR could describe the course of organic matter biodegradation and ammonia nitrogen biological nitritication, OUR could be used to assess the biological activity. The kinetics analysis of sludge biological activity further proved that the growth rate of heterotrophic bacteria was higher than that of autotrophic bacteria. The constants of active kinetics （Uom） were 128.21, 7.22mg/（g·h） respectively.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2007年第4期524-528,共5页
China Environmental Science
基金
国家"863"项目(2004AA601020)
吉林省重大科技发展计划项目(20040405-1)
关键词
有机物降解
硝化反应
氨氮
OUR
organic matter degradation
nitrate reaction
ammonia nitrogen
OUR
