SBBR处理垃圾渗滤液初探_张俊

第25卷第2期2006年4月四川环境SICHUANENVIRONMENTVol.25,No.2April2006·试验研究·收稿日期:2005-07-30作者简介:张俊(1979-),男,湖北黄冈人,武汉大学资源与环境科学学院环境工程专业2004级在读硕士研究生。研究方向为水污染控制。SBBR处理垃圾渗滤液初探张俊,张道斌,陈曦(武汉大学资源与环境科学学院,武汉430079)摘要:本文初步研究了用SBBR法处理垃圾渗滤液的处理效果。在驯养结束后的20个连续运行周期里,控制曝气量为250L/h,温度为27℃,有机负荷为0.4Kg(BOD5)/m3·d。当系统进水CODCr,NH3-N分别为810mg/L和93mg/L时,系统出水CODCr,NH3-N分别为160mg/L和28mg/L,运行结果表明:该系统在此条件下可以稳定运行。在此基础上,维持有机负荷和温度不变,在曝气量为150L/h,200L/h,250L/h时分别测定不同进水水质时CODCr,氨氮的去除率。实验结果表明:当气量为250L/h时,CODCr的去除率随进水CODCr浓度的升高而升高;当进水CODCr为790mg/L时,CODCr的去除率随气量的升高而升高,去除率为65.78%～79.68%,并且在1小时以后有较高的去除率。稳定运行8小时之后,去除率较接近各自的最高去除率。当气量为250L/h时,氨氮的去除率随进水氨氮浓度的升高而降低;当进水氨氮较低时(低于50mg/L),氨氮的去除率随曝气量的升高而升高,去除率为62.07%～97.69%。关键词:SBBR;垃圾渗滤液;曝气量中图分类号:X705文献标识码:A文章编号:1001-3644(2006)02-0009-05PreliminaryResearchonTreatmentofLandfill-leachatewithSBBRMethodZHANGJun,ZHANGDao-bin,CHENXi(SchoolofResource&EnvironmentalScience,WuhanUniversity,Wuhan430079,China)Abstract:AstudyonSBBRwasmadeforthetreatmentoflandfillleachate.Afteracclimation,thesystemwasoperatedundertheconditionsofcontinuousrunningof20cycles,airfluxat250L/h,temperatureat27℃,andorganicloadat0.4Kg(BOD5)/m3·d.Theresultsshowedthat:whentheinfluentsCODCrandNH3-Nwere810mg/Land93mg/L,wegotCODCrof160mg/LandNH3-Nof28mg/Lintheeffluent.Sothissystemcouldranverysteadilyunderthegivenconditions.Undertheconditionsofsametemperatureandorganicload,changingairfluxesandinfluents,theremovalefficienciesofCODCrandNH3-Nweredetected.Theresultsshowedthat:whentheairfluxwas250L/h,theremovalrateofCODCrincreasedwhenheighteningtheinfluentconcentration;whenCODCrwere790mg/L,theremovalrateofCODCrincreasedwhileheighteningtheairflux.Itsremovalraterangedfrom65.78%to79.68%,andeachcasehadafairlyhighratioafteronehouroperation.Whentheairfluxwas250L/h,theremovalrateofNH3-Ndecreasedwhenheighteningtheinfluentconcentration;whenNH3-Nwereaddedbelow50mg/L,theremovalrateofNH3-Nincreasedwhileheighteningtheairflux.Itsremovalraterangedfrom62.07%to97.69%.Keywords:SBBR;landfill-leachate;airflux1前言垃圾渗滤液具有CODCr浓度高、金属含量高、氨氮浓度高,并且含有多种有毒有害的难降解