改良型倒置A^2/O生物膜工艺的脱氮除磷性能研究  

NITROGEN AND PHOSPHORUS REMOVAL WITH IMPROVED REVERSE A^2/O BIO-MEMBRANE PROCESS

作　　者：梁柱[1] 郭永福[1,2] 吴伟[2,3] 白仁碧[1] 

机构地区：[1]苏州科技学院分离净化材料与技术研发中心,江苏苏州215011 [2]江苏省环境科学与工程重点实验室,江苏苏州215011 [3]江苏省环境科学研究院,江苏南京210029

出　　处：《水处理技术》2015年第3期76-80,85,共6页Technology of Water Treatment

基　　金：苏州市科技计划项目(SS201334);住建部科技计划项目(2011-K7-19);江苏省"青蓝工程"资助项目(201202);江苏省环境科学与工程重点实验室开放课题(Zd131207);苏州科技学院博士学位科研启动项目(201461)

摘　　要：通过在倒置A2/O工艺中增设填料,并对其污泥及硝化液回流方式进行变化后,得到兼具脱氮除磷功能与生物膜特点的改良型倒置A2/O生物膜工艺,并以实际生活污水为处理对象考察了工艺的脱氮除磷性能。结果表明,系统采用硝化液回流与污泥回流分离的方式,并增设组合填料与火山岩后,有助于提升系统的脱氮除磷性能,增强系统的稳定性。当DO质量浓度维持在2.0 mg/L和硝化液体积回流比为200%的条件下,系统对COD、NH4+-N、TN及TP的去除率分别可达84.9%、92.8%、70.9%和75.3%。DO质量浓度及硝化液回流比对系统的脱氮除磷性能有较大影响。A novel reverse A2/O membrane process was obtained by adding some filters and improving the circulation way of sludge and internal recycle. The improved A2/O process had the fimction of nitrogen/phosphorus removal and properties of bio-membrane technology. Actual sewage was treated in order to investigate the performance of the removal of nitrogen and phosphorus with the improved A2/O process. The results showed that it contributed to the promotion of the removal efficiencies of nitrogen and phosphorus and the stabilization of the system when the circulation ways of sludge and internal recycle were improved and some filters were added in the system. The removal ＇efficiencies of COD, NH4＋-N, TN and TP were 84.9%, 92.8%, 70.9% and 75.3%, respectively, in the conditions of the concentration of DO being 2.0 mg/L and the ratio of internal recycle being 200%. The removal of nitrogen and phosphorus was significantly affected by the concentration of DO and the ratio of internal recycle.

关 键 词：倒置A2/O工艺 脱氮除磷 硝化 反硝化 

分 类 号：X799.3[环境科学与工程—环境工程]