包埋固定化异养硝化菌强化处理氨氮有机废水
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2020-03-12 22:51:12
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包埋固定化异养硝化菌强化处理氨氮有机废水邵基伦1,曹刚1,2,李紫惠1,罗恺1,李明玉1,2(1.暨南大学环境学院,广东广州510630;2.暨南大学水处理工程研究中心,广东广州510630)摘要:以异养硝化菌Burkholderiasp.YX02为目标物,采用聚乙烯醇(PVA)和海藻酸钠(SA)为载体对菌株进行包埋固定化,考察包埋固定化异养硝化菌Burkholderiasp.YX02强化连续流反应器处理氨氮有机废水的性能。结果表明,包埋固定化异养硝化菌Burkholderiasp.YX02强化处理氨氮有机废水的最佳反应条件如下:温度为25℃、pH值为7.0、C/N值为10、包埋球量为80g/L,在此条件下对氨氮和COD的去除率分别为90.7%、82.4%,其中包埋球量对处理效果的影响最大。在不同的进水流量和氨氮浓度条件下,与直接投加菌株强化相比,菌株经包埋固定化后不仅能显著提高反应器对氨氮和COD的去除率,而且还能提高反应器抗氨氮负荷和有机负荷冲击能力。关键词:异养硝化菌;包埋固定化;连续流反应器;氨氮有机废水;最佳反应条件中图分类号:X703文献标识码:A文章编号:1000-4602(2015)01-0005-05基金项目:广东省科技计划项目(2011B030800009)EnhancedTreatmentofOrganicWastewaterContainingAmmoniaNitrogenbyEmbeddedImmobilizedHeterotrophicNitrobacteriaSHAOJi-lun1,CAOGang1,2,LIZi-hui1,LUOKai1,LIMing-yu1,2(1.SchoolofEnvironment,JinanUniversity,Guangzhou510630,China;2.WaterTreatmentEngineeringResearchCenter,JinanUniversity,Guangzhou510630,China)Abstract:HeterotrophicnitrobacteriaBurkholderiasp.YX02wasembeddedimmobilizedbyusingpolyvinylalcohol(PVA)andsodiumalginate(SA)asthecarriers.Thetreatmentoforganicwastewatercontainingammonianitrogenbythecontinuousflowreactorfilledwiththeembeddedimmobilizednitro-bacteriawasinvestigated.Theresultsshowedthattheoptimalreactionconditionsfortheenhancedtreat-mentofthewastewaterweretemperatureof25℃,pHof7.0,C/Nratioof10andembeddedballquanti-tyof80g/L.Undertheseconditions,theremovalratesofammonianitrogenandCODwere90.7%and82.4%respectively.Theembeddedballquantityhadthebiggesteffectonthetreatmentefficiency.Un-derconditionsofdifferentinfluentflowratesandammonianitrogenconcentrations,comparedwithaddingthenitrobacteriadirectlyintothecontinuousflowreactor,addingtheembeddedimmobilizednitrobacteriacouldsignificantlyenhancetheremovalratesofammonianitrogenandCOD,andimprovetheresistanceofthereactortoammonianitrogenandorganicloads.Keywords:heterotrophicnitrobacteria;embeddedimmobilized;continuousflowreactor;organicwastewatercontainingammonianitrogen;optimalreactionconditions·5·第31卷第1期2015年1月中国给水排水CHINAWATER&WASTEWATERVol.31No.1Jan.2015传统的生物法去除氨氮是利用自养菌来实现,但不能
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