生物流化床短程硝化的快速启动及影响因素研究  

Quick Start-up and Influencing Factors of Partial Nitrification in Biological Fluidized Bed Reactors

作　　者：呼晓明[1] 陈英文[1] 严伟峰[1] 蒋钰[1] 祝社民[2] 沈树宝[1] 

机构地区：[1]南京工业大学生物与制药工程学院,江苏南京210009 [2]南京工业大学材料化学国家重点实验室、材料科学与工程学院,江苏南京210009

出　　处：《环境科学与技术》2012年第7期16-20,共5页Environmental Science & Technology

基　　金：国家自然科学基金青年基金(20116072);江苏省环保厅项目资助(2009002);江苏省科技厅项目资助(BE2010196);国家高技术研究计划(863计划)项目资助(2009AA05Z313);江苏高校优势学科建设工程项目资助(PAPD)

摘　　要：采用内循环生物流化床反应器处理模拟高浓度氨氮废水,以确定其对处理高浓度氨氮废水的可行性,同时对试验条件进行了优化。结果研究表明：控制温度为（31±1）℃,利用反应器自身流化所携带溶解的空气,反应器内DO值可维持在1.5~2.5 mg/L,调节pH为8.0~8.5。经过42 d的污泥驯化适应时期,进水氨氮（NH4＋-N）浓度由50 mg/L提高到300 mg/L。由于流化床采用填料载体微生物膜与活性污泥双重作用,同时载体呈流化状态,接触均匀,有巨大的比表面积,可以使床内保持高浓度的生物量,从而达到高效快速的传质效果。在HRT由开始的16 h缩短到8 h的条件下,氨氮（NH4＋-N）的去除率达到90%以上,亚硝氮（NO2--N）的积累率达到75%。且在以后30 d的稳定运行阶段,氨氮（NH4＋-N）去除率和亚硝氮（NO2--N）积累率均保持稳定。同时反应器最后出水水质澄清,无需二沉池及污泥处理。In the experiment high performance inner loop fluidized bed biofilm reactor was used for treating high concentration synthetic wastewater of ammonia nitrogen in order to evaluate the performance of fluidized bed biofilm reactors（FBBR）during the treatment of high concentration ammonia wastewater,and determine the optimal experimental conditions through changing operational parameters.Results showed that when temperature of the reactors was（31 ±1） ℃,DO was provided by the running of reactor and kept between 1.5 ~2.5 mg/L,and pH 8.0 ~8.5,ammonia concentration of influent would improve from 50 mg/L to 300 mg/L after 42 days.In the reactor the carrier material was presented as fluidization,which would increase the surface area of carriers,and reach high concentrations of biomass.As the efficient and fast mass transfer effect of the reactor,when HRT was reduced from 16 h to 8 h,ammonia nitrogen removal went up to 90%,and nitrite accumulation rate can be up to 75%.The effluent was clear,and clarifier and sludge treatment system don’t need.

关 键 词：生物流化床(FBBR) 高浓度氨氮 短程硝化反硝化 

分 类 号：X703[环境科学与工程—环境工程]