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当前位置:首页 > 商业/管理/HR > 质量控制/管理 > 短程硝化反硝化工艺处理低CN垃圾渗滤液李军
CN*李 军1 彭 锋1 何建平2 刘 红2 孟光辉2王 磊1 陈 刚1 杜文利3 金永祥1(1.,,100022;2.,100036;3.,100094) 针对本试验垃圾渗滤液的水质特点和传统生物脱氮工艺存在的问题,结合目前国内外在该方向的研究现状,提出短程硝化反硝化处理垃圾渗滤液的新工艺。通过控制曝气池内溶解氧浓度平均在2.0mgL,温度(30±2)℃,实现了稳定的亚硝氮积累和较高的氨氮去除率,亚硝化率和氨氮去除率分别维持在83%和85%左右。试验结果表明,该工艺与传统生物脱氮工艺相比,污泥负荷明显增加,耗氧量和反硝化所需碳源减少,反硝化效率和速率明显提高,从而总氮去除率也显著提高。 生物脱氮 垃圾渗滤液 低CN 短程硝化反硝化 *(50678008),(8052005),(KQ0403200394)0 ,,,CN,[1]。AO,,,NO-3-NNO-2-NN2,NO-2-NNO-3-N,,,。NO-2-N,NO-2-N,,,[2]。,,。、DO、pH、。,DO。1 1.1 试验装置及工艺流程1,(A)-(O),。AO2,118cm、21cm,72cm,51cm,116L。19.6cm,,,25mm,,。1 :①,,,,,,[3];②,25%40%[4],,Charles[5]:,,;③,,,DO。15 20074252DOI:10.13205/j.hjgc.2007.02.0041.2 试验水质,1。1 mgL(pH)CODCrNH+4-NNO-2-N℃TNNO-3-NpH2500~60001000~20000~55~201200~24000~59000~150007.5~8.42 2.1 硝化污泥的培养,,。,(30±2)℃,DO3.5mgL[6],,24d,0.18kg(m3·d)1.58kg(m3·d),1.58kg(m3·d),,1473mgL,58mgL,96%,,4000mgL。DO3.5mgL,,,10mgL。2.2 DO对曝气池内氨氮去除率和亚硝化率的影响,(30±2)℃,450mgL(),CODCr2000mgL(60%CODCr),0.6~1.0kg(m3·d),DODO,2。DO2 DO1.0mgL,,,。,DO2.0mgL,,,82%85%。2.3 不同温度对硝氮、亚硝氮生成速率的影响、,,,SBR,,,1200mgL,CODCr3000mgL,DO=2.0mgL,4000mgL,10、15、20、25、30、35、40、45℃,、,3。3 、3,10~22℃,,,;35℃,,,,;40℃,,,。,25~30℃。2.4 曝气池内稳定运行的情况75~96d,(30±2)℃、CODCr4000~6000mgL、1100~1800mgL、72~96h、3、DO1.5~2.5mgL、0.6~1.0kg(m3·d),,,85%,,83%。,,,DO。2.5 碳源分析,SBR,,16 20074252,。,,,4,30℃、1045mgL,95mgL,CODCr4376mgL(CODCrNOX≈3.84),12h,、CODCr108、37、1479mgL,CODCr66.2%,89.7%,。4 ,,,5,30℃,78mgL,1073mgL,CODCr4439mgL(CODCrNOX≈3.86),30h,、CODCr126、339、1438mgL,,CODCr67.6%,68.4%,,。,CODCrNOX(MLSS=5 6000mgL),,1g,2.91gCODCr;,1g,4.37gCODCr,33.4%,。2.6 回流比的确定:ηTN=R(1+R),R,ηTN,R,,,R[7]。,CODCrTN=5,(30±2)℃,,1~4,,4,,60%,4。2.7 系统运行稳定后对渗滤液总体处理效果CODCrTN5,(30±2)℃,DO2.0mgL,1.0kg(m3·d),4,CODCr6。6 CODCrCODCr、6327、12951380mgL,CODCr、、、1209、104、320、78537mgL,CODCr80.8%61%,CODCr。3 (1)AO、CN,(30±2)℃,DO2.0mgL,0.6~1.0kg(m3·d),,83%85%。(2),CODCrTN5,4,CODCr80.8%61%,CODCr。17 20074252 (3)SBR,,CODCrNOX≈3.84,33.4%,、。[1] .:、、.:,2004:11-20.[2] G.Ciudad.Partialnitrificatioofhighammoniaconcentrationwastewaterasapartofashortcutbiologicalnitrogenremovalprocess.ProcessBiochemistry,2005,40(5):1715-1719.[3] .().().:,2000:308-315.[4] IvanMahne.Nitrificationdenitrificationinnitrogenhigh-strengthliquidwastes.Wat.Res.,1996,30(9):2107-2111.[5] CharlesG,JoannS..Denitrificationkineticsofhighnitrateconcentrationwater:pHeffectoninhibitionandnitriteaccumulation.WatRes.,1998,32(3):831-839.[6] U.Welander.Nitrificationoflandfillleachateusingsuspended-carrierbiofilmtechnology.Wat.Res.,1997,31(9):2351-2355.[7] M.Martienseen.Biologicaltreatmentofleachatefromsolidwastelandfillsites-alterationsinthebacterialcommunityduringthedenitrificationprocess.Wat.Res.,1997,31(5):1164-1170. 100022 100 (010)67391726E-mail jglijun@bjut.edu.cn.2006-10-19*施东文1,2 陈健波1 奚旦立1 汪 蕊2 谢曙光3 王占生4(1.,200051;2.,450013;3.,100871;4.,100084) 通过MBBR工艺和陶粒生物滤池预处理黄河中下游微污染黄河水的对比试验研究,发现陶粒生物滤池和移动床生物膜反应器对CODMn的去除效果接近,但前者对UV254、三氯甲烷前体物和叶绿素a的去除效果均远远高于后者。陶粒生物滤池对氨氮的去除效果略高于移动床生物膜反应器,陶粒生物滤池出水中的亚硝酸盐氮浓度也较低。 移动床生物膜反应器 陶粒生物滤池 预处理 黄河水 *(04-02-166)0 (movingbedbiofilmreactor,MBBR)[1-3]。,,,,MBBR。(bio-ceramicfilter,BF),。、、,。,MBBR,。1 1.1 试验设备MBBR1,1m2,3m3。LT(100mm,87%),1gcm3,360m2m3,50%。4m3h,0.25∶1(0.5m3h),5mgL。5d。2,,3m,0.5m。2~5mm,18 20074252PILOTSTUDIESONTREATINGMUNICIPALSEWAGEUNDERNORMALTEMPERATUREBYMODIFIEDEGSBZhangXuanjun MaXiujuan ZhouXuefeietal(7)………………………………………………Abstract Itisexaminedthattheeffectsofcircumfluenceratio,hydraulicretentiontimeandvolumeloadingrateontreatingurbansewagebymodifiedexpanedgranularsludgebed(EGSB).TheresultsshowthattheeffluentCODfiltofmodifiedEGSBisdecreasedascircumfluenceratioincreasingandhydraulicretentiontimedecreasing,however,effluentSS,CODfiltandCODCrareincreasedevidentlywhenhydraulicretentiontimeislowerthan2h.AscomparedwithunmodifiedEGSB,effluentCODCrofmodifiedEGSBisdecreasedby26.7mgLandCODfiltisdecreasedby17.8mgL,whileSSisalsodecreasedby66.3mgL.ThemodifiedEGSBandunmodifiedEGSBbecameunstablewhenvolumeloadingrateincreasedabruptly;however,modifiedEGSBcanrecoverfromimpacteasierthanunmodifiedEGSB.Keywords EGSB,municipalsewage,volumeloadingrateandimpactSTUDYONBIOLOGICALFLUIDIZEDREACTOROFAEROBIC-ANOXICINTEGRATEDHIGH-EFFICIENCYSEPARATIONZhangYukui ShiGuifang ShiHanchang(10)………………………………………Abstract Astherequirementsofphosphorousremovalanddenitrificationinwastewatertreatment,andtherearesomeshortcomingsininnercirculatedthree-phasebiologicalfluidizedbed,wedesignedanddevelopedakindofbiologicalfluidizedreactorofaerobic-anoxicintegratedhigh-efficiencyseparation(BRAIH).AkindofuniquecellularstructureisusedinaerobicfluidizedareaofBRAIH.WhenvolumeofBRAIHisincreased,andheightofBRAIHisnotadded,height-diameterratiooffluidizedarea(HD)canbeensured.Whilesolidandliquidseparationbasedonsedimentationoninnercirculatedfluidizedbedcannotensurewaterqualityofeffluent,couplingofcirculatedfluidizedreactorandhigh-efficiencyairfloatationcanreducesuspendedsolid(SS)ofeffluent.AerobicareaandanoxicareaaretogetherinBRAIH,andthroughairliftingcanrealizebackflowofaerobicareaeffluent,soBRAIHcanachievedenitrificationandpartphosphorousremoval.Bytreatmentofmunicipalwastewater,itisproved
本文标题:短程硝化反硝化工艺处理低CN垃圾渗滤液李军
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