高氮渗滤液缺氧_厌氧UASB_SBR工艺低温深度脱氮_孙洪伟

中国环境科学2009,29(2)：207~212ChinaEnvironmentalScience高氮渗滤液缺氧/厌氧UASB-SBR工艺低温深度脱氮孙洪伟1,彭永臻1*,时晓宁1,张树军1,杨庆1,陈莹2(1.北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京100124；2.四川大学建筑与环境学院,四川成都610065)摘要：在低温条件下,采用缺氧/厌氧UASB-SBR组合工艺处理实际垃圾填埋场渗滤液.结果表明,该工艺可实现有机物和氮的同步、深度去除.在进水COD平均为11950.2mg/L,NH4+-N为982.7mg/L的条件下,出水分别为390.1mg/L和2.9mg/L,去除率分别为96.7%和99.7%.同时,缺氧UASB1反应器的最大COD负荷达到13kg/(m3⋅d),最大COD去除速率为12.39kg/(m3⋅d),具有高效缺氧反硝化和高效厌氧降解有机物反应的双重功效,在SBR反应器的缺氧段和缺氧UASB,反应器内获得了99%以上的反硝化率.对于冬季水温分别为14.9,14.1,13.5,11.05℃的低温条件下,SBR反应器实现了完全硝化和反硝化,出水TN分别为4.1,5.7,14.1,16.5mg/L,达到了深度脱氮的目的.此外,在上述温度范围内,温度对反硝化速率(rN)的影响大于对硝化速率(rDN)的影响,rN/rDN比值相对恒定.关键词：垃圾渗滤液；缺氧/厌氧UASB-SBR；深度脱氮；低温中图分类号：X703.1文献标识码：A文章编号：1000-6923(2009)02-0207-06Biologicaladvancednitrogenremovalfromlandfillleachateofhighconcentrationnitrogenbyanoxic/anaerobicUASB-sequencingbatchreactor(SBR)atlowtemperature.SUNHong-wei1,PENGYong-zhen1*,SHIXiao-ning1,ZHANGShu-jun1,YANGQing1,CHENYing2(1.KeyLaboratoryofBeijingWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China；2.CollegeofArchitectureandEnvironment,SichuanUniversity,Chengdu610065,China).ChinaEnvironmentalScience,2009,29(2)：207~212Abstract：Thetreatmentofrealleachatefrommunicipallandfillwithhighchemicaloxygendemand(COD)andammonianitrogen(NH4+-N)contentwasinvestigatedbyusinglab-scaleanoxic/anaerobicup-flowanaerobicsludgebed(UASB)-sequencingbatchreactor(SBR)combinedprocess.CODandnitrogeneffectivelywasremovedsimultaneouslyandeffectivelybythebiologicalsystem,averageCODandNH4+-Nofinfluentcouldbereducedfrom11950.2mg/Land982.7mg/Lto390.1mg/Land2.9mg/L,respectively.ThemaximumorganicloadingrateofanoxicUASBreactorreached13kg/(m3·d),andthemaximumorganicremovalratewas12.39kg/(m3·d).DenitrificationefficiencyintheanoxicphaseofSBRandintheanoxicUASBwasabove99%.Underthelowerwatertemperatureconditionsat14.9,14.1,13.5and11.05inwinter,completenitrificationanddenitrificationwasachievedinSBRreactor,th℃eeffluentTNwasbelow16.5mg/L.Inaddition,itwasalsoindicatedtheinfluenceoftemperaturewasgre