高浓度废水可调式厌氧处理技术

张艳1崔兆杰1姜斌2刘雷1(1,250100;2,250002):以酒精发酵和有机化工混合废水为研究对象,通过对原厌氧工艺的改进,成功地研发了可调式级全糟发酵/DDG+级UASB+级IC厌氧工艺,实现了废水有机负荷和进入方式的随机调节运行结果表明:新工艺运行稳定,有机负荷提高1倍,沼气产率提高39%~56%,厌氧阶段出水COD由原工艺的2000mg/L降低到500mg/L左右,COD去除率由93%上升到99%:高浓度废水;厌氧;可调式ADJUSTABLEANAEROBICPROCESSFORHIGHORGANICCONTENTWASTEWATERZhangYan1CuiZhaojie1JiangBin2LiuLei1(1.SchoolofEnvironmentalScienceandEngineering,ShandongUniversity,Jinan250100,China;2.ShandongMedicalCollege,Jinan250002,China)Abstract:Takingthemixedwastewaterfromalcoholfermentationandorganicchemicalindustryastheobject,andthroughimprovementontheoriginalanaerobicprocess,itwassuccessfullydesignedthenewanaerobicprocessofadjustablewholestillageanaerobicfermentation/DDG+UASB+IC,whichcouldmodulatetheorganicloadandentrymodeofthewastewaterstochasticly.Theresultsindicatedthatthenewprocessranstably,whichdoubledtheorganicload,increased39%~56%ofgasproduction,decreasedtheCODofthefinaleffluentfrom2000mg/Ltoabout500mg/L,andincreasedtheCODremovalratefrom93%to99%.Keywords:highorganiccontentwastewater;anaerobic;adjustable0,,,,,,-,UASBEGSBICUASB[14],COD2000mg/L,COD,,,,,,,,,1,,9600m3,5400m3,1400m3,4000m3,(COD)53~58mg/L,(SS)35~4mg/L,pH35~45,93%~94%,1100m3,(COD)1000~1500mg/L,pH45~55,320102281,3000m3,(COD)6000mg/L,pH30~40,,1500m3,(COD)1000~1300mg/L,pH40~50,221废水处理工艺--,()+UASB(),3000m312,1800m3UASB8,1122运行效果分析11(COD)/(mgL-1)(BOD)/(mgL-1)(SS)/(mgL-1)pH53~583~3535~435~453~3518~2325~34~65000~80002500~35001500~25007~92500~35001000~1500800~9007~9~2000700~1000400~5006~91,COD,2000mg/L,,(BOD)/(COD)05,,,,,,,,331新技术改进的原则,,,,,,,,,,,,,,DDG,,DDG,,,,DDG,,,,,,,,32可调式厌氧处理技术,,22321(),,(551),123000m3(15m18m),,U,9m16m,2,420102281DDGDDGCOD,,DDG(COD)3~35mg/L,(COD)53~58mg/L,,10~12kg/(m3d),,75dDDG,8~10kg/(m3d),5d,(COD)3~35mg/L,COD,:,30d,(COD)35000mg/L;,30d,(COD)45000mg/L;,30d,(COD)55000mg/LCOD4~5kg/(m3d),CODVFApH,,,3,COD3,pH43COD4pH34:,(COD)15000mg/L,1,11000mg/L,COD60%80%pH,78~853,;,,322(UASB),UASB,(341),121500m3(14m12m)6m10m,COD,,,SS,30000mg/L,,(SS)2000mg/L,(COD)8000mg/L,COD,1:pH30~40,,,,pH78~85,,,UASB,,6~8kg/(m3d),3d,3,COD5,pH656:UASB,(COD)3000mg/L,COD65%,pH75~82UASB,,5201022815UASBCOD6UASBpH323(IC)COD,,,,,102000m3IC(12m20m)(341)IC(COD)5000mg/L,,24h44m,2,10,18m3,3,,IC,MLSS20g/LIC,(COD)4000~6000kg/L,VFA,VAF400mg/L,20%3:COD075kg/(m3d);COD2~5kg/(m3d);COD5kg/(m3d)3,IC,COD7,pH878:IC,COD,1000mg/L,20d,1,500~600mg/L3IC(COD)500mg/L,COD90%,pH7~8,,,COD,,,IC,(COD)3000mg/L,5000mg/L,,(COD)500mg/L7ICCOD8ICpHIC,COD,,IC,,33可调式高浓度废水厌氧处理技术运行效果3,/DDG;;,1,22(COD)/(mgL-1)(BOD5)/(mgL-1)(SS)/(mgL-1)pH52874~5825029445~3500735049~4172235~4510308~115965709~700219653~2538378~857820~85441836~24501458~187278~852902~3639832~1289720~85575~82463~558279~384162~21370~826201022812,,COD99%,COD500mg/L,(BOD)/(COD)06,,,41),,(COD)2000mg/L500mg/L,COD99%,,,,13107kWh,211106kWh,11107kWh,057/(kWh),6062)/DDGCOD5~6kg/(m3d)10~12kg/(m3d)16~18m3/m325m3/m3,39%~56%93DDG,2250m3,165kWh,37107kWh;DDG4,t900/t,3600DDG1120,24803),5600m3/d,2600m3/d,,230IC1570,120230606,22[1],,,.UASB[J].,2005,2(11):9598.[2],,.EGSB[J].,2007,33(7):8890.[3],,,.(IC)[J].,2007,1(5):4144.[4],,,.UASBCAAS[J].,2006,3(10):101107.25010027303Emailcuiz@jsdueducn2009-01-08(2)950,30/m3,36/m3,03/m3,69/m3,COD211t/a3mg/L(COD)()()/118214811720001170501041960150102080:4--,GB8978-1996:MDMTMTD,[1],.M[J].,2008,28(2):2123.[2],,,Fenton[J].(),2005,21(4):7174.[3],,.[J].,1995,3(1):5564.[4],,,.[J].,2005,25(12):1317.[5],.[J].,2007,19(3):2629.[6],,,.-[J].,2008,26(3):[e-mail]2009-08-13720102281