摘要
按照20%的投配比向好氧池中投加悬浮式填料,将传统A2/O工艺转变为A2/O复合式生物膜工艺。以实际市政污水为处理对象,考察了如何强化反硝化除磷效果的方法。结果表明,通过改变污泥龄从而适当的增加装置中污泥浓度可以有效的提高缺氧区反硝化除磷的效果,当SRT=8d时,装置总体的处理效果最好。COD,总氮,氨氮和总磷的去除率分别达到了83.3%,75.5%,100%,91.4%。当SRT=10 d时反硝化除磷的现象最为明显,约占总磷去除量的46.2%。
A bench scale apparatus was set up to simulate the wastwater treatment system of anaerobic-anoxic-oxic（A2/O） with a certain amount of suspended media being added into the oxic compartment.The experiment on the system focused on enhancing the efficiency of denitrifying phosphorus removal of the wastewater from a local municipal wastewater plant by means of changing sludge retention time（SRT）.Result showed that SRT of eight days comes the optimum performance of the wastewater system in terms of removals of COD,TN,NH4＋-N and TP.When SRT is ten days,denitrification plays an important role in the overall P removal of the wastewater system,accounting for 46.2% of the total P removal.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2011年第1期45-47,51,共4页
Environmental Science & Technology
基金
广州市环境保护局污染防治新技术开发项目(200803)
亚热带建筑科学国家重点实验室项目(2009ZA05)
关键词
A2/O复合式生物膜工艺
反硝化除磷
悬浮式填料
污泥龄
A2/O hybrid biofilm process
denitrifying phosphorus removal
suspended carriers
sludge retention time（SRT）
