好氧反硝化菌强化序批式活性污泥反应器处理生活污水  

Aerobic denitrifying bacteria enhanced SBR for sewage treatment

作　　者：姚力[1] 信欣[1] 周迎芹[1] 鲁磊[1] 冷璐[1] 

机构地区：[1]成都信息工程学院资源环境学院,四川成都610225

出　　处：《环境污染与防治》2014年第3期73-77,81,共6页Environmental Pollution & Control

基　　金：四川省科技支撑计划项目(No.2013GZ0067)

摘　　要：研究了好氧反硝化菌强化序批式活性污泥反应器(SBR1)处理生活污水的性能,同时以只接种相同量普通活性污泥的序批式活性污泥反应器(SBR2)作为对照组。结果表明:(1)反应前21天启动期间,SBR1对污水COD、NH+4-N和TN的平均去除率分别可达到77.79%、94.96%、63.21%,对COD和TN的平均去除率明显好于SBR2。(2)当C/N为4∶1(质量比,下同)和6∶1时,SBR1对COD和TN的去除率明显高于SBR2;当C/N为8∶1时,SBR1对COD和TN的去除效果达到最好,对两者的平均去除率分别达到85.31%和61.14%;当C/N为10∶1和12∶1时,两反应器对废水COD去除效果的差距缩小,但SBR1对TN的平均去除率分别为58.98%和51.64%,明显高于SBR2。(3)SBR1投加的好氧反硝化菌适应较低的C/N环境,且能在生活污水中快速增殖,保持了很好的污泥悬浮液浓度和沉降性能,在35d形成成熟的颗粒污泥。The aerobic denitrifying bacteria enhanced sequencing batch reactor （SBR1）was operated to treat schoolyard domestic sewage, at the same time, the sequencing batch reactor inoculated with the same quantity of active sludge （SBR2） was established as control group to compare the treatment efficiency of SBR1. During the 21 days of start-up period, the average COD, NH＋ -N and TN removal rates of SBR1 were 77.79 %, 94.96 %, 63.21% respective- ly,and COD and TN removal rates of SBR1 were significantly higher than that of SBR2. When the C/N of sewage was 4 ： 1 or 6 ： 1,the COD and TN removal efficiency of SBR1 was apparently higher than SBR2;When the C/N of sew- age reached 8 ： 1,the SBR1 achieved the optimum treatment efficiency with average COD and TN removal rates were 85.31% and 61.14~ respectively. The relative higher C/N of sewage （10 ： 1 or 12 ： 1） narrowed the gap between SBR1 and SBR2 for COD removal,however, the TN removal efficiency of SBR1 was obviously higher than SBR2 under high C/N condition. The aerobic denitrifying bacteria added in SBR1 was adaptable to low C/N condition, the rapid proliferation of aerobic denitrifying bacteria maintained the higher sludge concentration and better sedimentation prop- erty, so the mature granular sludge was successful cultivated in 35 days.

关 键 词：好氧反硝化菌 生物强化 生活污水 

分 类 号：X799.3[环境科学与工程—环境工程]