复合倒置A2O工艺优化运行参数研究张辰

　Vol.35　No.11　200925　　　A2/O张　辰　谭学军(,　200092)　　　结合污水处理厂升级改造开展中试研究,考察水力停留时间(HRT)、污泥龄(SRT)和回流比等运行参数对复合倒置A2/O工艺处理性能的影响,优化工艺运行参数。试验结果表明,在常温和低温条件下,复合倒置A2/O工艺所需泥龄较短,当SRT为12d时,既可保证良好的硝化水平,又可提高除磷效果;当回流比为200%时,可获得良好的同步脱氮除磷效果。　倒置A2/O工艺　复合工艺　生物脱氮除磷　污水处理厂ResearchontheoptimaloperationalparametersofcompoundinvertedA2/OprocessZhangChen,TanXuejun(ShanghaiMunicipalEngineeringDesignGeneralInstitute,Shanghai200092,China)Abstract:Usingpilotscaleexperimentalequipment,theoptimaloperationalparameterswerestudiedbyinvestigatingtheinfluenceofhydraulicretentiontime(HRT),sludgeage(SRT)andreturnratioontheremovalofpollutantsincompoundinvertedA2/Oprocess.Theexperimentalresultsshowedthat,undernormalandlowtemperature,thecompoundinvertedA2/OprocesscouldbeoperatedunderrelativelyshortSRT.WhenSRTwas12d,nitrificationreactioncouldremaininhigherlevel,andphosphorusremovalcouldbeincreased.Whenreturnratiowas200%,thecompoundinvertedA2/Oprocessshowedbetterremovaleffectofnitrogenandphosphorus.Keywords:InvertedA2/Oprocess;Compoundprocess;Biologicalnitrogenandphosphorusremoval;Wastewatertreatmentplant0　,。,,、,。,,,。A2/O,A2/O,(072312003)。、、[1]。,A2/O,,,,,,[2],。A2/O,,(SRT)(HRT),,。,,,,、DOI:10.13789/j.cnki.wwe1964.2009.11.00326　　　　Vol.35　No.11　2009。　　A2/O,。,,,。A2/O:,,,;,,。,A2/O。,,,,,。1　1.1　1。,。2∶1,L×B×H=0.5m×0.5m×0.5m,0.1m3,0.5m×0.25m×0.5m,0.05m3,。,0.58m,0.9m,0.2m3。,。1.5m,0.25m,0.25m3,,。1　1.2　1。1　CODCr/mg/LBOD5/mg/LNH3—N/mg/LTN/mg/LTP/mg/LpH180～44067～18830～6040～702.5～77.1～7.51.3　COD;NH3-N;TN-;TP。1.4　2。2　HRT/hSRT/d/%DO/mg/LMLSS/mg/L/℃　2,3,417.52002～4200025～284,6,8121002～4200010～12412,17.52002～4200017～20412100,2002～4200017～202　2.1　,。,HRT,。HRT,,,,HRT。,HRT,。2.1.1　(15℃)HRT2h、3h4h,CODCr、NH3—N、TNTP2。2　HRT　Vol.35　No.11　200927　　　2,HRT,CODCr、NH3—N、TNTP。,CODCr、NH3—NTPHRT2h3h,,10.4%、28.7%11.4%,3h4h,,2.3%、0.5%0.2%。TNHRT,。CODCr、NH3—NTP,,CODCr、NH3—NTP,TN,,,,。,,3h。2.1.2　(≤15℃)HRT4h、6h、8h,CODCr、NH3—N、TNTP3。3　HRT3,HRT4h6h,CODCrNH3—N,6h8h,;TN,HRT,;TPHRT4h6h,91%,HRT8h,,,PHB,,[3]。,,6h,,TP。2.2　,、,。[4],,,。,,[5]。,,,;,,,。SRT17.5d12d,NH3—NTP45。4,A2/OSRT17.5d12d,NH3—N,90%,NH3—N5mg/L。,A2/O,,A2/O,,,NH3—N。28　　　　Vol.35　No.11　20095,A2/O,TP。SRT17.5d,TP75.6%,1mg/L;SRT12d,TP92.5%,0.47mg/L。A2/O,12dSRT,,。2.3　A2/O。:,。,,,,,,,,;,,,,。,,。,A2/O。200%100%,A2/O,67。6　TN6,200%100%,A2/OTN。200%,TN69.8%,15.4mg/L;100%,TN53.7%,23.8mg/L。7TP,TP7　TP。200%,TP83.1%,0.76mg/L;100%,TP87.8%,0.62mg/L。TNTP,200%,A2/O,,。3　(1)A2/O,HRT3h,HRT6h。(2)A2/O,,,SRT12d。(3)A2/O200%,。参考文献1　,.A2/O.,2000,16(7):11～152　,./.,1997,13(3):7～103　,..:,2005.184　,..:,2002.1165　,,..:,2007.156～165　　&:200092901E-mail:[e-mail]:2009-07-08