摘要
采用气升式内循环间歇反应器对好氧污泥颗粒化的过程进行了研究,考察了不同水力循环时间下好氧污泥颗粒化过程及其特性,并且对反应器中形成的好氧颗粒污泥内部菌群形态进行了描述.结果表明,不同水力循环时间对好氧颗粒污泥生长特性产生了很大的影响,在较短水力循环时间下,颗粒污泥粒径增长速度快,形成的颗粒粒径多数在1.0～2.0mm之间,并且VSS含量达92.08%,强度也较高,而在较长水力循环时间中形成的颗粒粒径在0.5～1.0mm之间、VSS含量在83.92%,污泥强度下降.
The granulation process of aerobic granular sludge was studied adopting internal-circulate sequencing batch airlift reactors conducted in the reactors. The granulation process and its properties at different hydraulic cycle time were inspected, and the form of the sludge internal bacteria flock formed in the reactor was described. The growth properties of each sludge were affected greatly by the different hydraulic cycle times. At the shorter cycle time the sludge diameter grew quickly, many in 1.0~2.0mm, and VSS content reached 92.08%, with higher strength; while at longer cycle time, the diameter formed was 0.5~1.0mm, VSS content was 83.92%, with strength lowered.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2004年第6期725-729,共5页
China Environmental Science
基金
高等学校博士学科点专项基金资助项目(20030141022)
关键词
好氧颗粒污泥
颗粒化过程
水力循环时间
微生物比生长速率
生物降解期
好氧饥饿期
aerobic granular sludge
granulation process
hydraulic cycle time
microbe specific growth rate
biodegradation phase
aeration starvation phase
