A^2SBR反硝化除磷系统的启动和脱氮除磷性能  

Start-up and Evaluation of an Anaerobic/Anoxic Sequencing Batch Reactor (A^2SBR) for Denitrifying Dephosphorization

作　　者：石玉明[1] 马放[1] 姜欣欣[1] 王强[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院城市水资源与水环境国家重点实验室,哈尔滨150090

出　　处：《科技导报》2008年第22期58-62,共5页Science & Technology Review

基　　金：国家自然科学基金项目(50778052)

摘　　要：采用厌氧-缺氧SBR(A2SBR)系统,研究了反硝化除磷单污泥系统的启动条件,并考查了该工艺的脱氮除磷效能。结果表明,以城市生活污水处理厂活性污泥为种泥,在厌氧相进水COD浓度250mg·L-1,缺氧相进水NO-3-N浓度30mg·L-1左右时,通过"厌氧-沉淀排水-缺氧-沉淀排水"的周期性运行,可在29d内成功启动A2SBR反硝化除磷系统;运行方式改为"厌氧-缺氧-沉淀排水"后,A2SBR系统很快达到了稳定,在厌氧相和缺氧相HRT分别为3h和4.5h的条件下,其脱氮和除磷效率可分别达到90%和95%,COD去除率大于88%,最终出水的COD,NO-3-N和PO3-4-P浓度可分别降至28,3.35,0.57mg·L-1,表现出良好的反硝化脱氮和除磷性能。An anaerobic/anoxic sequencing batch reactor （A2SBR） is used to investigate the conditions for starting up a single activated sludge system and its capability of denitrifying dephosphorization is evaluated. The results indicate that the A^2SBR process could be started up and perform steadily within 29 days, in a seasonal manner of anaerobic-sludge sedimentation and water discharge-anoxic-sludge sedimentation and water discharge. After the 29th day, the SBR turns to have a routine performance. The HRT takes 3 hours in anaerobic phase and 4.5 hours in anoxic phase. When the influent COD in anaerobic phase keeps at 250 mg.L^-1 and NO3^- -N in anoxic phase of about 30 mg.L^-1, over 88% of COD, 90% of NO3^--N and 95% of PO4^3--P are removed in the A2SBR process with an effluent concentration of COD, NO3^--N and PO4^3- -P of 28 mg· L^-1, 3.35 mg· L^-1 and 0.57 mg. L^-1, respectively.

关 键 词：反硝化除磷 反硝化聚磷菌 A2SBR 启动 脱氮除磷性能 

分 类 号：X703[环境科学与工程—环境工程]