改良分段进水工艺处理低CN城市污水的体积优化控制陈强

C/N[1]。HRT、MLSS、C/N[2-4]。。。HRT。、[5]。LarreaV()/V()[6]4A/O2[7]V():V():V()=1:3:6COD、TN、TP[8]。。11.11。3。300L。100L67L227AN、1A1、1O1、2C/N12311.1500902.1500503.510060m(C)/m(N)4。HRT10h、SRT10～15d4:3:3、。V()/V()V():V():V()4:12:666.2%PO43--P、TN0.55、22.60mg/L。V():V():V()4:9:9TN、PO43--P17.76、2.61mg/L。V():V():V()=4:9:9。X799.3A1000-3770(2015)04-0071[e-mail]@bjut.edu.cn1Fig.1Schematicdiagramofmodifiedstepfeedprocess41420154TECHNOLOGYOFWATERTREATMENTVol.41No.4Apr.,201571DOI:10.16796/j.cnki.1000-3770.2015.04.017A2、2O2、3A3、3O3。44L。5。。。1.215d。COD153.2～344.5mg/LNH4+-N、NO2--N、NO3--N、TN、PO43--P40.4～55.6、0～0.005、0～1.038、52.23～68.46、2.555～5.336mg/Lm(C)/m(N)2.52～5.81。1.3NO3--NNO2--NN-(1-)-NH4+-NTNTOC-VCPNTNPO43--PCOD5B-3CMLSSMLVSSpH、ORP、DOWTWmulti3420BX51[9]。1.423～28℃HRT10hqV()161L/dSRT10～15d100%。DO2mg/LDO0.1mg/L。3、1、24:3:3。4、、1。22.1COD4COD2。24COD49.89、52.98、46.08、44.86mg/L76.2%、74.5%、80.5%、80.9%。CODCODCOD56.62%、55.41%、62.8%、66.2%CODCOD25.23%、25.74%、19.2%、11.7%。UCT45.6%[10]Ge62%±6%[11]。。4HRTHRTHRT2CODHRT。HRT。CODHRTCOD。2COD3。41Tab.1OperationconditionsandparametersV(AN):V(A1):V(O1):V(A2):V(O2):V(A3):V(O3)HRT/h12344:2:4:2:4:2:44:3:5:2:3:2:34:3:3:3:3:3:34:4:2:4:2:4:21.2661.2661.2661.2661.3321.5171.9982.6653.1923.0272.3941.5962CODFig.2CODremovalefficiencyofthesystemunderdifferentconditions020406080100120050100150200250300350020406080100
/%t/d
COD/mgL 4147227.27%、31.82%、40.91%、54.54%54.54%、50.00%、40.91%、27.27%。211COD1。4COD3。3COD。42COD1CODHRT。2.22.2.14NH4+-N4。44NH4+-N1.55、1.26、0.45、9.52mg/L。1～3HRTNH4+-NNH4+-N0～0.5mg/L。12NH4+-N3NH4+-N138.08mg/L9.01mg/L139414.63mg/L4.21mg/L2。4HRT1.596hNH4+-NNH4+-NGB18918－2002A[12]。4。2.2.24SND2。212、34。4NH4+-NNO3--NNO3--N。HRT。212TN25%。34。、[13]。12DODODO。34Δm/(g·d-1)/%Δm/(g·d-1)/%24Tab.2Resultsofnitrogenelementmaterialbalanceunderdifferentconditions12Δm/(g·d-1)/%Δm3/(g·d-1)/%9.732.652.582.462.991.6210027.3026.5225.3030.7016.709.054.123.561.302.371.2510045.5039.3314.4026.2013.808.884.804.550.112.681.2610054.2051.321.3030.2014.3010036.3027.1124.4924.3814.849.733.532.632.382.371.4411221、23。3CODFig.3VariationalongthelawofCODremovalunderdifferentconditions020406080100COD
/%ANA1O1A2O2A3O34NH4+-NFig.4NH4+-Nremovalefficiencyofsystemunderdifferentconditions0204060801001200102030405060020406080100
/%t/d
 ρ(NH4+-N)ρ(NH4+-N)ρ(NH4+-N)/(mg·L-1)C/N73。24TN。4TN15%。2.2.3TN4TN5。54TN24.22、24.49、17.76、22.60mg/L59.4%、59.1%、69.2%、60.9%。1～3TN12TN。3TN。4TN3TN。2.3PO43--P4PO43--P6。6PO43--P3.28、3.24、2.61、0.55mg/L16.2%、18.1%、31.8%、86.3%。12PO43--P34PO43--P。。4TN9.0%、10.8%、7.2%、1.4%33.12%、40.76%、18.37%、2.68%。NO3--N1。4。4PO43--P7。712PO43--P。PO43--PPO43--P。2、3PO43--PPO43--P。34。2.4DO、pH、ORP。DO、pHORP7PO43--PFig.7VariationalongthelawofPO43--Pcontentunderdifferent02468101214
ANA1O1A2O2A3O3ρ(PO43--P)/(mg·L-1)5TNFig.5TNremovalefficiencyofsystemunderdifferentconditions020406080100120010203040506070020406080100

/%t/d ρ(TN)ρ(TN)ρ(TN)/(mg·L-1)6PO43--PFig.6PO43--Premovalefficiencyofsystemunderdifferentconditions0204060801001200123456-50-250255075100

/%t/d ρ(PO43--P)/(mg·L-1)ρ(PO43--P)ρ(PO43--P)4147489。84DO0.1mg/LDO2mg/LDO。813pH11pH。1111pHWangpH[14]。1NO3--NpH。12233pHpH。4。NO3--NpH1。11pH1～3。122pH。2pH1。22pH。233pH2pH30.0364PO43--P33pH3pH2。3pH3。94ORP。DONO3--NORP。DONO3--NORPDONO3--NORP。2.54SVI74.72、71.31、97.08、81.48mL/g。。DO、。4010。8DOpHFig.8VariationalongthelawofDOcontentandpHunderdifferentconditions01234565.05.56.06.57.07.5ANA1O1A2O2A3O3pH
ρ(DO)ρ(DO)/(mg·L-1)9ORPFig.9VariationalongthelawofORPunderdifferentconditions-400-300-200-1000100200ORP/mVANA1O1A2O2A3O3
34103Fig.10Microscopicexaminationofthesludgeinthirdaerobiczoneunderdifferentconditions12C/N75VOLUMEOPTIMIZATIONCONTROLOFMODIFIEDSTEPFEEDPROCESSINTREATINGLOWCOD/TNMUNICIPALSEWAGEChenQiang1,WangWei2,WangChuanxin3,PengYongzhen1(1.StateKeyLaboratoryofUrbanWaterResourceandEnvironment,HarbinInstituteofTechnology,Harbin150090,China;2.CollegeofCivilandArchitecturalEngineering,HeilongjiangInstituteofTechnology,Harbin150050,China;3.GuangzhouMunicipalEngineeringDesignandResearchInstitute,Guangzhou510060,China)Abstract:Byadjustingthevolumedistributionofanaerobic,anoxicandaerobiczone,theremovalrateofpollutantsusingmodifiedstepfeedprocesstotreatlow(m(C)/m(N)4)municipalsewagewasstudiedunderthefollowingconditions:hydraulicretentiontime(HRT)was10h,sludgeretentiontime(SRT)was10～15d,andinfluentflowdistributionratiowas4:3:3.Theresultsshowedthateffectivecarbonsourceutilizationratewouldgraduallyimprovewithanincreaseofthetotalvolumeratioofanoxicandoxiczones.Undertheconditionofvolumeofanaerobiczone:whentotalvolumeratioofanaerobiczonetoanoxiczonetooxiczoneequaled4:12:6,effectivecar