颗粒污泥的反硝化除磷研究  

Study on Denitrifying Phosphorus Removal by Granular Sludge

作　　者：唐艳葵[1] 童张法[1] 张寒冰[1] 王孝英[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《中国给水排水》2007年第17期32-36,共5页China Water & Wastewater

基　　金：广西自然科学基金资助项目(桂科基0448085);广西大学科研基金资助项目(X051008)

摘　　要：借助SBR反应器,采用厌氧/好氧/缺氧的运行方式,对富集的以反硝化聚磷菌(DNPAOs)为优势菌的活性污泥进行颗粒化培养,约35d后得到了较成熟的颗粒污泥。考察了该颗粒污泥的脱氮除磷性能,结果表明:当以厌氧/缺氧方式运行时系统具有良好的反硝化除磷性能,缺氧结束时除磷率>96%,对氨氮的去除率为95%左右;外加NO3--N的浓度对缺氧段的反硝化吸磷速率有一定影响;颗粒污泥中的DNPAOs可以利用内碳源进行反硝化吸磷,从而实现了同步脱氮除磷。Inoculated with enriched activated sludge, in which denitrifying phosphorus-accumulating organisms were predominant, granular sludge was cultivated under anaerobic/aerobic/anoxic modes in a sequencing batch reactor （SBR）. Granules were observed after operation for 35 days. Nitrogen and phosphorus removal efficiencies of the granular sludge system were investigated. The results show that： （1） During the operation with anaerobic/anoxic modes, the system has an effective denitrifying phosphorus removal efficiency. After anoxic period, the phosphorus removal efficiency exceeds 96% and NH4^＋ - N removal efficiency is about 95% ; （2） The rate of denitrifying phosphorus uptake is affected by the concentration of nitrate in anoxic phase; （3） DNPAOs in the granular sludge can use internal carbon source for denitrifying phosphorus uptake, which enables simultaneous phosphorus and nitrogen removal.

关 键 词：颗粒污泥 反硝化除磷 反硝化聚磷菌 SBR反应器 

分 类 号：X703[环境科学与工程—环境工程]