文档介绍：湘潭大学
硕士学位论文
曝气生物滤池脱氮工艺与过程控制研究
姓名:刘剑
申请学位级别:硕士
专业:水处理新技术
指导教师:戴友芝
20050501
湘潭大学硕士学位论文摘要
Abstract
This research examined the craft of nitrogen-removal and the
process control with biological aerated filter(BAF). the reactor start and
the influence factors, space character, back-flushing characteristic,
reactor biofilm characteristic and biofacies change were investigated.
The results indicated:
novel hanging membrane was able to essfully hang the
membrane in a very short time; on the condition that the range of
hydraulic loading value was from m3/(m2·h) m3/(m2·h),
gas-water ratio was 5: 1, the range of pH value was from to , the
+ 3
ammonia nitrogen loading was lower than kg NH 4 − N /m ·d, and
anic loading was lower than ·d, the reactor had a
better processing effect.
best bed height anic removal was different from that of
ammonia nitrogen removal in the biological aerated filter. Along fluent
direction the ammonia nitrogen removal lags to the removal of CODcr.
It was indicated that the active layer of carbonizes bacteria was in the
upper of reactor and the active layer of nitrifying bacteria was in the
lower of reactor.
optimum back-flushing time is seven minutes, and the
back-flushing interval is no more than five days. After the back-flushing
the CODcr removing rate resumed the normal removal ability fast than
the ammonia nitrogen. Influence by back-flushing on nitrifying bacteria
was more than that on carbonizes bacteria and denitrifying bacteria
parative abundant biological phases in the reactor
in the course of operating, and it will change regularly with the change

II
湘潭大学硕士学位论文曝气生物滤池脱氮工艺与过程控制研究
of space and operation state. Along the fluent direction the superiority
protozoa in biomembrane are the flagellata, the free swimming ciliate,
the sessile ciliate in turn, demonstrating the obvious plug flow
characteristic.