生物接触氧化协同折流滤池处理低C/N值污水研究  

Study on Treatment of Low C/N Wastewater by Biological Contact Oxidation and Baffled Filter

作　　者：刘振[1,2] 刘丽 LIU Zhen;LIU Li

机构地区：[1]天津市市政工程设计研究院 [2]天津市基础设施耐久性企业重点实验室 [3]临沂市建筑设计研究院有限责任公司

出　　处：《节能与环保》2022年第11期80-82,共3页

摘　　要：低C/N值污水由于有机碳源的不足,导致传统生物脱氮过程中反硝化效果较差,氮素污染物浓度较高而难以达标排放。针对此问题,构建了生物接触氧化(BCO)协同折流滤池(BF)系统,用于处理低C/N值污水,考察了启动和运行过程中系统对污水中氮的脱除特征。研究结果表明:BCO池运行11天后可成功实现部分亚硝化,为BF池提供所需的进水水质;BF池在运行16天后可成功启动厌氧氨氧化,出水NH_(4)^(+)-N、NO_(2)^(-)-N、TN浓度均处于较低水平,TN平均去除率超过90%;BCO协同BF系统主要通过部分亚硝化、厌氧氨氧化、反硝化等多种途径共同来实现污水的高效脱氮。研究结果可为低C/N值污水的处理提供方法借鉴,同时也为预防水体富营养化提供更多的技术策略。Due to the shortage of organic carbon sources,the denitrification effect of low C/N value wastewater in the traditional biological nitrogen removal process is poor,and the concentration of nitrogen pollutants is high,which makes it difficult to meet the discharge standard.To solve this problem,a biological contact oxidation(BCO)collaborative baffled filter(BF)system was constructed to treat low C/N wastewater.The nitrogen removal characteristics of the system during startup and operation were investigated.The results show that:BCO tank can successfully realize partial nitrification after 11 days of operation,providing the required influent water quality for BF tank;The BF tank can successfully start anaerobic ammonia oxidation after 16 days of operation.The effluent NH_(4)^(+)-N,NO_(2)-N and TN concentrations are at a low level,and the average TN removal rate exceeds 90%;BCO cooperates with BF system to achieve efficient nitrogen removal of sewage mainly through partial nitrification,anaerobic ammonia oxidation,denitrification and other ways.The research results can provide reference for the treatment of low C/N value sewage,and also provide more technical strategies for preventing eutrophication of water bodies.

关 键 词：BCO BF 低碳源 污水 脱氮 

分 类 号：X703[环境科学与工程—环境工程]