UASB好氧混凝工艺处理高盐榨菜废水研究马前

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UASB——1,2,2(1.,200086;2.,200092)[]、,UASB——。,UASB:(NaCl)46g/L,15.0kg/(m3·d),38℃,pH6.8~7.2;,DO>4mg/L,HRT20~24h,COD;,(PAC)200mg/L,pH6.4~7.8,COD。UASB——,COD45%、60%、61.7%,COD78mg/L,>90%,《》(GB8978—1996)。[];;;[]X703[]B[]1005-829X(2011)04-0062-04StudyonthetreatmentofmustardtuberwastewaterwithhighsalinitybyUASB-aerobic-coagulationprocessMaQian1,XuDingwen2,GuXuexi2(1.EnvironmentalProtectionBureauofShanghaiHongkouDistrict,Shanghai200086,China;2.SchoolofLifeScienceandTechnology,TongjiUniversity,Shanghai200092,China)Abstract:Themustardtuberwastewaterischaracterizedbyhighsalinityandhighorganicmatterconcentration.TheefficiencyofusingUASB-aerobic-coagulationprocessfortreatingmustardtuberwastewaterfromthedesaltingtechnologyhasbeenstudied.TheresultsshowthatthebestreactionconditionsofUASBareasfollows:thesaltmassconcentration(calculatedasNaCl)islowerthan46g/L,theorganicloadingnothigherthan15.0kg/(m3·d),temperature38℃andpH6.8-7.2.Theremovalrateisthehighest,whenitisinthefacultativeoxidationreactorandaerobic-contactoxidationreactor,DOis>4mg/L,andHRTis20-24h.TheCODofeffluentwateristhelowest,duringtheprocessofcoagulation,whenthemassconcentrationofPACdosageis200mg/L,andpH6.4-7.8.AftertreatedbytheUASB-aerobic-coagulationprocess,thewastewaterCODremovalratesofthethreeunitsare45%,60%,and61.7%,respectively,theeffluentCODisabout78mg/L,andthetotalremovalrateishigherthan90%,meetingthefirstclassofIntegratedStandardofWastewaterDischarge(GB8978—1996).Keywords:highsalinity;mustardtuberwastewater;upflowanaerobicsludgebed;coagulation,。,、、、、、、,〔1〕。,,、,。,〔2〕,0.5%~2%,〔3〕,。,〔4-7〕。,,,。,(UASB)——,COD、、DO、,。31420114IndustrialWaterTreatmentVol.31No.4Apr.,20116211.1,pH4.5~5,COD9600~12000mg/L,BOD58500~9000mg/L,TOC4000~4500mg/L,Cl-15000~20000mg/L。1.21.2.1UASB,,,90%~95%,,,,0.1m3,9~10g/L。。UASB0.6m,1.8m,28.26m2,0.5m3,0.1m3(18%~20%),COD5~10kg/(m3·d),0.225~0.5m3/d。(38±1)℃,pH6.8~7.2,2000~4000mg/L。UASB,20g/L。UASBCOD,COD,,,2g/L,UASB,。、,,40~44g/L,HRT16~22h。1.2.2UASB1∶2,,,,。1.5m×0.6m×0.5m,0.45m3,。1.2.3,:200L,200L,,,。36h,2h。,。100L,。30d,,,。25—30,COD70%,。,DO≥4mg/L,1.5m×0.6m×0.5m,0.45m3,,HRT20~24h。1.2.4(PAC),pH6.4~7.8。、3。,,,。,,,,。0.8m×0.2m×1m,0.15m3,HRT6h。UASB——1。1—;2—;3—UASB;4—;5—;6—;7—;8—。11.31。:UASB、、、、、、、。22.1UASB2.1.1CODCOD2。2011-04,31(4),:UASB——6312COD,,。2,20d,2~5kg/(m3·d),COD29%~37%;7.0kg/(m3·d),COD27%~31%;,15d,COD40%。2.1.2UASBCODCOD3。3COD3,1、14、28,9.8、27.1、46g/L,3,COD,。3,35.8~39.7g/L,COD42%~52%,。39.7g/L,COD,,,46g/L,COD40%~43%。2.22.2.1CODCOD4。4COD4,15d,COD,:,,;,,,,〔11〕。4,14g/L18.6g/L,COD61%~68%,18.6~19.4g/L,COD,。,COD,。,18g/L,COD79%~85%。2.2.2DODO,DO5。,DO4.7~5.2mg/L。5DOpHWTWMulti350iWTWMulti350iWTWMulti350iCl-ZDJ-5CODBOD5WTWBODOxTopOC102011-04,31(4)64,,。5,5—15,15.8g/L19.5g/L,COD。,,,,〔8〕,COD。2.3PAC。12℃,PAC50~300mg/L,90r/min1min,40r/min20min,30min,,COD,2。,,PAC200mg/L,COD,COD61.7%。COD3。3COD2.4,0.5m3/d,1.5kW·h/d,0.97/(kW·h),2.94/m3;0.1kg/d,3600/t,0.72/m3;0.4kg/d,2100/t,1.68/m3;0.26/m3;5.6/m3,。3(1)UASB——,5.6/m3,。(2)UASB:15.0kg/(m3·d)、46g/L、。(3):UASB——,,COD78mg/L,《》(GB8978—1996)。[][1].[J].,2003(3):9-12.[2].[J].,2004,24():209-211.[3].[J].,2000,20(4):6-10.[4],,,.[J].,2009,25(15):21-24.[5],,.—SBR—[J].,2009,35(6):60-63.[6],,,.ASBBR[J].,2008,22(17):7780.[7],,,.FentonCOD[J].,2008,34(12):68-70.[8],,,.NaCl[J].,2004,22(1):19-21.[](1962—),2002,,,。:021-25658540,E-mail:maq5558@hotmail.com。[]2011-01-07()2PAC/(mg·L-1)/spHCOD/(mg·L-1)COD/(mg·L-1)150527.64203.4172.02100487.68203.4110.33150407.71203.487.14200307.66203.477.95250387.69203.4112.46300467.72203.4121.4COD/(mg·L-1)COD/%UASB9500522545.01742948.245.0948.2203.478.5203.477.961.72011-04,31(4),:UASB——65

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