高氮负荷下pH值对Anammox反应器的影响  

Effect of pH on Performance of Anammox UASB Reactor at High Nitrogen Load

作　　者：徐斌[1] 周少奇[2,3] 黄国涛[1] 李伙生[2] 

机构地区：[1]华南理工大学土木与交通学院,广东广州510640 [2]华南理工大学环境科学与工程学院,广东广州510006 [3]华南理工大学亚热带建筑科学国家重点实验室,广东广州510640

出　　处：《中国给水排水》2013年第7期10-14,共5页China Water & Wastewater

基　　金：亚热带建筑科学国家重点实验室资助项目(2011Z808;2012ZB06);广州市重点科技项目(208DB2080500)

摘　　要：采用模拟废水研究了总氮负荷为9.33 kgTN/(m3.d)的条件下,改变进水pH值对厌氧氨氧化UASB反应器运行性能的影响。结果表明,进水pH值为7.00～7.20时处理效果最佳,对氨氮和亚硝态氮的平均去除率分别为97.4%、97.7%。进水pH值低于6.00或高于9.00时厌氧氨氧化反应完全停止,低pH值冲击可通过延长HRT的手段使反应器在20 d内恢复正常;高pH值冲击会对反应器造成不可逆抑制。通过对反应器不同部位的取样分析,发现在反应器下部氨氮、亚硝态氮已被基本去除完全,反应器的容积负荷具有较大的提升空间。Effect of influent pH on the performance of Anammox UASB reactor fed with synthetic wastewater with total nitrogen load of 9.33 kgTN/（m3 - d）was investigated. The best treatment was found at pH between 7.00 and 7.20, the average removal rates of ammonia nitrogen and nitrite nitrogen were 97.4% and 97.7%, respectively. Anammox reaction was fully stopped when influent pH was below 6.00 or above 9.00. Low pH shock could be restored in 20 days by means of extending HRT of the reactor, and high pH shock would cause irreversible inhibition. The analysis of samples from different positions of the reactor showed that at the bottom of the reactor, ammonia nitrogen and nitrite nitrogen were almost removed, indicating a significant increased potential for the reactor volume load.

关 键 词：厌氧氨氧化 高氮负荷 UASB pH值冲击 

分 类 号：X703[环境科学与工程—环境工程]