A^2/O系统生物添加强化硝化研究  

ENHANCING NITRIFICATION BY BIOAUGMENTATION IN A^2/O PROCESS

作　　者：万琼[1] 裴丽影[2] 彭党聪[2] 

机构地区：[1]西安科技大学建筑与土木工程学院,710054 [2]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《水处理技术》2013年第9期89-91,共3页Technology of Water Treatment

基　　金：国家重大水体污染控制与科技治理重大专项(2009ZX07317-009)

摘　　要：按城市污水处理厂污水和污泥水水量比例设计A2/O污水处理系统和O/A污泥水处理中试系统。试验采用城市污水厂污水和污泥水,将O/A系统所产生的剩余污泥添加至A2/O系统,考察生物添加强化硝化效果。研究结果表明,在相同的温度条件下,对氨氮的去除率可以提高30%以上,氨氧化速率(AUR)和亚硝酸盐氧化速率(NUR)分别从生物添加前的2.61 mg/(g·h)和2.38 mg/(g·h)提高到5.32 mg/(g·h)和3.81 mg/(g·h),分别为生物添加前的2.04倍和1.60倍。A pilot plant including A^2/O process and O/A process was built according to the flow ratio of wastewater and reject water in municipal wastewater treatment plant （WWTP）. The A2/O process was used to treat wastewater and aerobic/anoxic （O/A） process to treat reject water. Wasted sludge in O/A process in which nitrifier was enriched was pumped back to the A2/O process for bioaugmentation. The experimental results showed that bioaugmentation was very effective for enhancing nitrification. After nitrifier bioaugmentation, the NH4＋-N removal rate was improved more than 30% in A^2/O process. And AUR and NUR of the activated sludge increased from 2.61 mg/（g·h） and 2.38 mg/（g·h） to 5.32 mg/（g·h） and 3.81 mg/（g·h）, which was as 2.04 times and 1.60 times as those of before bioanzmentation in AVO process resoectively.

关 键 词：A2/O系统 生物添加 中试 氨氧化速率 亚硝酸盐氧化速率 

分 类 号：X703[环境科学与工程—环境工程]