负荷交替法快速培养好氧硝化颗粒污泥的研究
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2020-02-28 09:02:24
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第34卷第4期2013年4月环境科学ENVIRONMENTALSCIENCEVol.34,No.4Apr.,2013负荷交替法快速培养好氧硝化颗粒污泥的研究沈娜,杨昌柱,濮文虹*,罗应东(华中科技大学环境科学与工程学院,武汉430074)摘要:在3个SBR(R1、R2、R3)中分别培养好氧硝化颗粒污泥,R1和R2分别采用进水氮负荷交替变化和进水碳氮负荷同步交替变化这2种新的培养方式,R3采用传统的逐步提高氮负荷法.对R1、R2和R3培养得到的硝化颗粒污泥在物理性状、污染物去除效能等方面进行对比分析.结果表明,R1和R2的培养方式明显缩短了培养时间,70d左右成功培养出完全意义上的硝化颗粒(硝化菌的活性超过异养菌的活性),而R3需147d.采用进水碳氮负荷同步交替变化法快速培养出的颗粒外形更规则、硝化菌活性更高、脱氮性能更优,稳定运行时氨氮和总氮去除率分别为95%和70%左右,在理化性状和脱氮性能上明显优于其他2种.对比发现,在硝化颗粒污泥培养初期,适当提高进水有机负荷,能加快颗粒的形成及生长.关键词:好氧硝化颗粒;氮负荷;有机负荷;交替变化;快速培养中图分类号:X703.1文献标识码:A文章编号:0250-3301(2013)04-1464-08收稿日期:2012-07-03;修订日期:2012-09-25作者简介:沈娜(1988~),女,硕士研究生,主要研究方向为水污染控制工程,E-mail:Lucky_sn123@yahoo.com.cn*通讯联系人,E-mail:wenhongpu@yahoo.cnRapidCultivationofAerobicNitrifyingGranularSludgewithAlternateLoadingMethodSHENNa,YANGChang-zhu,PUWen-hong,LUOYing-dong(CollegeofEnvironmentalScienceandEngineering,HuazhongUniversityofScienceandTechnology,Wuhan430074,China)Abstract:ThenitrifyinggranularsludgewascultivatedinthreeSequencingBatchReactors(SBR),R1,R2andR3,respectively.ThereweretwonewcultivatingmethodsappliedinR1andR2,whichalternatelychangedtheinfluentnitrogenloadingandtheinfluentcarbonandnitrogenloading,respectively.Thetraditionalmethodofstep-increasingnitrogenloadingwasadoptedinR3.Theresultsshowedthatthefull-sensenitrifyinggranularsludgecouldbecultivatedsuccessfullyafter70daysinR1andR2,whileittook147daysinR3.Thedensergranuleswithhigheractivityofnitrifyingbacteriaandbetterdenitrifyingperformancecouldberapidlyobtainedbyalternatelychangingtheinfluentcarbonandnitrogenloadingsimultaneously.Theremovalratesofammonianitrogenandtotalnitrogenwereabout95%and70%,respectively,underthestableoperationconditions.Overall,thephysicalandchemicalpropertiesofgranulesandtheperformanceofdenitrificationwereoutstandinginR2.Fromthecomparisonresults,itindicatesthattheincreasinginfluentorganicloadingcanspeeduptheformationofgranulesandtheirgrowthattheearlycultivationstage.Keywords:aerobicnitrifyinggranular;nitrogenloading;organicloading;alternantchange;rapidcultivation近几年来有关硝化颗粒污泥的
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