摘要
以絮状活性污泥为种泥,以模拟城市生活污水为处理废水,在间歇式活性污泥反应器(SBR)内进行污泥的驯化和培养,通过控制运行条件在SBR内成功实现了NO2--N的积累和短程同步硝化反硝化。实验结果表明,NO2--N积累阶段,控制温度(31±1)℃、曝气量40～45L/h、污泥泥龄9～15d,SBR内NO2--N积累率可达95%～96%。培养成熟的好氧颗粒污泥平均粒径为3～5mm,用其进行短程同步硝化反硝化实验,一个反应周期5h结束后SBR出水的COD,NH4+-N,TN去除率分别达92%,95%,85%。
Activated sludge was acclimatized and cultured in a sequencing batch reactor using floccular activated sludge as seeding sludge and simulated civil sewage as medium. Accumulation of NO2-N and shortened simultaneous nitrification and denitrification were achieved successfully in the reactor by controlling the operating conditions. The experimental results show that the accumulation rate of NO2- -N is 95% -96% when the temperature is （31 _ 1 ） ℃, the aeration rate is 40 -45 L/h and the sludge age is 9 - 15 d. The matured aerobic granular sludge has an average diameter of 3 - 5 ram. After a 5-hour reaction period of shortened simultaneous nitrification and denitrification with the matured aerobic granular sludge, the removal rate of COD, NH4-N and TN is 92% ,95% and 85%, respectively.
出处
《化工环保》
CAS
CSCD
北大核心
2009年第1期18-22,共5页
Environmental Protection of Chemical Industry
基金
国家自然科学基金资助项目(50878058)
广东省科自然科学基金资助项目(8151009101000015)
关键词
短程同步硝化反硝化
污泥泥龄
间歇式活性污泥反应器
驯化
好氧颗粒污泥
shortened simultaneous nitrification and denitrification
sludge age
sequencing batch activated sludge reactor
acclimatization
aerobic
作者简介
章文菁（1983-），女，江西省上饶市人，硕士生，主要从事污水处理理论与技术的研究。电话13570435069，电邮zhangwenjingzwj@163．com。
