SBBR反应器对低C/N城市污水的脱氮效能研究  

Study of Low C/N Domestic Sewage in Nitrogen Removal Effection by a Sequencing Batch Biofilm Reactor

作　　者：许秀红[1] 金蒙蒙[1] 李宇[1] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2013年第5期937-943,共7页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家科技支撑计划项目(2006BAJ06B07-5);住房和城乡建设部科技攻关项目(51108277);住房和城乡住建部科技攻关项目(2011-K7-9)

摘　　要：目的研究投加聚丙烯悬浮载体的SBBR反应器处理低C/N(质量比)城市污水的脱氮效果及氮素转化规律.方法在A/O运行工况下对取自于沈阳北部污水处理厂活性污泥进行培养驯化以形成生物膜负载,对COD、NH4+-N和TN的质量浓度的进出水变化及去除率等进行检测及分析.结果 SBBR系统具有很好的稳定性,在进水COD质量浓度、NH4+-N质量浓度数值波动较大时,出水仍然符合标准;COD、NH4+-N、TN的平均去除率分别达到89.91%、87.03%、68.58%.C/N(质量比)大于5反应可正常进行,碳源不足时可进行贮存反硝化作用,但C/N(质量比)低于3.5时,反应停滞.结论 SBBR系统中的聚丙烯载体由于其内外三层圆环的特殊结构,形成了好氧/缺氧/厌氧微环境,既能产生较好的同步硝化反硝化(SND)现象,又对有机物有明显的处理效果.This paper introduces the research on the effect of nitrogen removal in the microbial membrane carder dosing polypropylene SBBR packing process dealing with low C/N （mass ratio） domestic sewage. Under the A/O operation mode, we cultivate them in order to study the technology of nitrogen removal ef- fection in the domestic sewage which from Shenyang northern sewage treatment plant. The results show that the carrier which was used in the SBBR, created aerobic-anoxic-anaerobic micro-environment in space, and appeared a good phenomenon of simultaneous nitrification and denitrification （SND）. The average removal rates of CODcr, NH4 ~ - N, TN is respectively 89. 91% ,87. 03% ,68.58%. The effect of the effluent all reached the national ＂Urban sewage treatment plant emission standards＂（ GB18918 -2002）1 A standard. K

关 键 词：SBBR 聚丙烯载体 低C N（质量比） SND 生活污水 

分 类 号：X703[环境科学与工程—环境工程]