摘要
为研究絮凝细菌对好氧污泥颗粒化的影响,采用气升式内循环序批反应器,在培养好氧颗粒污泥过程中投加絮凝细菌,探讨其投加量对颗粒污泥的理化性能及生物降解效能的影响.结果表明,适量投加絮凝细菌能促进好氧颗粒污泥的形成,絮凝细菌投加量在0～20mL/L时,均可以培养出成熟的好氧颗粒污泥.絮凝细菌最佳投加量为10mL/L,此时颗粒化速度快,颗粒形成时间由未投加的42d缩短为35d,好氧颗粒污泥疏水性好,SVI稳定在40mL/g左右,沉降速度达35.82m/h,COD、氨氮和总磷的去除率分别为97.14%、84.49%和87.59%.而投加量为30mL/L时最终所形成的是白色污泥絮团,没有实现污泥颗粒化.
The aerobic granular sludge was cultivated by adding flocculant bacteria in sequencing batch airlift reactor（SBAR）,the physical-chemical properties and biodegradation effect of granules were studied so as to investigate the influence of flocculant bacterium on characteristics of aerobic granular sludge. The results showed that flocculant bacterium could prompt granulation process,the aerobic granules could be successfully cultivated when the dose of flocculants was between 0-20 mL/L. The optimum dose was 10 mL/L,in this case the formation of aerobic granules needed 35d which was faster than that of 42d in blank experiment,and SVI was around 40 mL/g,settling velocity reached 35. 82 m/h,the COD,NH 4＋ -N,TP removal rate of mature granular sludge were 97. 14% , 84. 49% and 87. 59% respectively. While no granules formed when the dose of flocculants was 30 mL/L,some white flocs existed in SBAR.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2010年第5期1263-1268,共6页
Environmental Science
基金
黑龙江省自然科学基金项目(E200824)
国家自然科学基金重点项目(50638020)
关键词
絮凝细菌
好氧颗粒污泥
比生物絮凝因子
气升式内循环序批反应器
flocculant bacterium
aerobic granular sludge
relative bioflocculation parameter
sequencing batch airlift reactor （SBAR）
