升流式曝气生物滤池运行特性及动力学

2017年第36卷第10期CHEMICALINDUSTRYANDENGINEERINGPROGRESS·3897·化工进展升流式曝气生物滤池运行特性及动力学贾艳萍，姜成，张兰河，张海丰，王嵬，陈子成（东北电力大学化学工程学院，吉林吉林132012）摘要：研究采用升流式曝气生物滤池（UBAF）处理亚甲基蓝模拟废水，进行了长期连续实验，考察了UBAF启动和挂膜情况，分析了曝气生物滤池池体内部生物量随填料高度的变化及沿程污染物去除规律，根据不同水力负荷下不同填料层高度有机底物降解效果，建立了有机底物降解动力学模型。结果表明：UBAF持续挂膜43天后，填料表面附着大量的微生物，生物相丰富，COD、NH3-N和色度去除率分别为80.93%、73.81%和56.79%；在最佳工况下稳定运行，生物膜厚度、微生物量和沿程污染物降解速率均随填料高度增加而降低，COD、NH3-N和色度的去除主要集中在填料高度35cm以下。通过分析不同水力负荷下不同填料高度COD的变化情况，得到有机底物降解动力学模型，动力学模型参数n和K2分别为0.2022和0.0406。关键词：开流式曝气生物滤池；废水；生物膜；动力学中图分类号：X703.1文献标志码：A文章编号：1000-6613（2017）10-3897-07DOI：10.16085/j.issn.1000-6613.2017-0655StudyonoperationcharacteristicsanddynamicsofupflowbiologicalaeratedfilterJIAYanping，JIANGCheng，ZHANGLanhe，ZHANGHaifeng，WANGWei，CHENZicheng（SchoolofChemicalEngineering，NortheastElectricPowerUniversity，Jilin132012，Jilin，China）Abstract：Thesimulatedmethylenebluewastewaterwastreatedcontinuouslyforalong-termtimebyusingupflowbiologicalaeratedfilter（UBAF）inthisstudy.Theconditionsofthestart-upanddomesticationwereinvestigatedandthechangesofbiomasswiththefillingheightandtheregularityofpollutantsremovalinUBAFwereanalyzed.Furthermore，thedegradationdynamicmodeloforganicsubstratewasestablished，whichbasedontheperformanceanalysisofsubstratedegradationunderdifferenthydraulicloads.TheresultsshowedthattheremovalrateofCOD，ammonianitrogenandchromawere80.93%，73.81%and56.79%，respectively.Richmicroorganismsandbiotawereadheredonthesurfaceoffillingafterthereactorwascontinuouslydomesticatedfor43days.Whenthereactorwasstablyoperatedundertheoptimalparameters，thefilmthickness，microbialbiomassandlineardegradationrateofpollutantsdecreasedwithincreasingfillingheight.TheremovalofCOD，ammonianitrogenandchromamainlyconcentratedinthepackingheight35cmbelow.ThekineticmodelwasdeterminedbyanalyzingtheCODofdifferentheightfillingsandhydraulicloadings.ThemodelparametersnandK2oforganiccompounddegradationkineticwere0.2022and0.0406,respectively.Keywords：upflowbiologicalaeratedfilter；wastewater；biofilm；kinetics废气的生物处理理论与工艺研究。E-mail：12525893