初沉池改造为回流污泥反硝化池最佳进水比例研究杨敏

35220114JournalofNanjingUniversityofScienceandTechnologyVol．35No．2Apr．20112009－11－112010－04－22“863”[e-mail]。300074。。A3．2hNO－31．5mg/L0%。X7031005－9830201102－0279－05OptimumFeedRatioofPrimarySettlingTankTransformedasDenitrificationTankofRecycleSludgeYANGMinSUNYong-liZHENGXing-canYOUJiaNationalEngineeringResearchCenterforUrbanWaterandWastewaterTianjin300074ChinaAbstractInordertoremovenitrogenandphosphorusenhancedlythefeedratioofdenitrificationtankofrecyclesludgetransformedfromprimarysettlingtankshouldbeoptimized．Combiningasimu-lationexperimentaboutthetransformingofwastewatertreatmentplantthedenitrificationrateofmixedsolutionmadeupofrecyclesludgeanddifferentratiofeedisstudiedbasedoncomparativejartestsinthisstudy．TheresultshowsthatwhenthetotalnitrogenineffluentofwastewatertreatmentplantarrivesGradeAofnationaldischargestandardbyendogenousdenitrificationofrecyclesludgewith3．2hthemassconcentrationofNO－3indenitrificationtankofrecyclesludgeisnomorethan1．5mg/Land0%isanoptimumfeedratioofdenitrificationtankofrecyclesludgetransformedfromprimarysettlingtank．Keywordsprimarysettlingtanksupgradingandtransformingrecyclesludgedenitrificationtanksdenitrificationrateoptimumfeedratio。1－7/DOI:10.14177/j.cnki.32-1397n.2011.02.009352。20～30min10%～30%3－7。。。HRT1．5～3h。。、。0%、20%30%。12．5m3/d412、30．5m3/d41．5m3/d。。4A2/OBA41。14VSSSS0．8MLVSSMLSS0．74。1。1/m3/h25m×4．1m20123．24500L/d。42。244。400mm650mm530mm。//900mm、600mm、700mm550mm3122。400mm800mm150mm550mm。、。。0%－30%100%。28NO－3100%0%20%30%。18℃NO－3、MLSSMLVSS11．4mg/L7．75g/L5．58g/L。31L00．20．3L0821770min481216202530406090120150180minNO－3。NO－3ρNO－3NO－3。33．13－5。3－520%30%、89。0%。2。2NO－3VSSHRTmNO－3/mVSS·tHRT8。30%20%MLSS30%20%4min。30%420%530%2/%mNO－3·mVSS－1·t－1HRT/mg·g－1·h－1/minmNO－3·mVSS－1·t－1HRT/mg·g－1·h－1/minmNO－3·mVSS－1·t－1HRT/mg·g－1·h－10————0．77202．5841．23120．85303．5041．33160．893NO－31．5mg/L。ρNO－31．5mg/L。3－520%30%ρNO－330min7．2mg/L5．9mg/L1．5mg/L18235230min0%、20%30%ρNO－32．1、2．83．3mg/LρNO－3ρNO－3。3－5ρNO－31．50mg/L3。3NO－3/%HRT/hρNO－3=1．5mg/L/minρNO－3=0mg/L/min03．2138159202．67115138302．469912233ρNO－31．5mg/LρNO－30%。3ρNO－31．5mg/L138min0%ρNO－31．5mg/L。0%。ρNO－311．4mg/LρNO－30%ρNO－31．5mg/L。10ATN≤15mg/L15mg/LρNO－3ρMLVSS5．58g/L0%0．77mg/g·hρNO－31．5mg/Ltt=15－1．50．77×5．58=3．14h1t=3．14h0%3．2hρNO－315mg/L0%ρNO－31．5mg/L。TNA≤15mg/L0%。3．20%。。18℃MLSS6～7g/L0%6NO－3NO－34。40%3．2hNO－31．5mg/L。0%。4NO－3123456ρNO－3/mg·L－1118．284．212．214．4ρNO－3/mg·L－10．500000．8NO－3/mg·L－110．58．284．212．213．641NO－311．4mg/L2821770%20%30%ρNO－31．5mg/L2TN10A3．2hNO－31．5mg/L0%3NO－3。1．J．2008242423－27．2BortoneGLibelliSM．AnoxicphosphateuptakeinthedephanoxprocessJ．WatSciTech1999404－5177－185．3．M．1998．4SedlakRI．Phosphorusandnitrogenremovalfrommu-nicipalwastewater—PrinciplesandpracticeM．2nded．NewYorkLewisPublishers1991．5．A－A2/OJ．20083112150－152．6．J．200218923－25．7．A2/OJ．2008341227－30．8．A/OJ．200826356－58．9BarnardJL．CutPandNwithoutchemicalsJ．WaterandWastesEng197411733－48．10GB18918－2002．S．382