不同条件下UBAF的硝化性能研究李思敏

UBAF李思敏1,　刘　强1,　时真男1,　王　栋2,　唐锋兵1(1.河北工程大学城市建设学院,河北邯郸056038;2.邯郸市市政污水处理有限责任公司,河北邯郸056002)　　　:　采用以陶粒为填料的上向流曝气生物滤池(UBAF)处理城市污水,考察了水力负荷、有机容积负荷和氨氮容积负荷对UBAF硝化性能的影响。结果表明:随着水力负荷的提高,UBAF的硝化性能加速下降,当水力负荷由0.8m3/(m2·h)增至1.5m3/(m2·h)时,UBAF对NH+4-N的平均去除率仅下降了4.87%,当继续增至2.2m3/(m2·h)时,UBAF对NH+4-N的平均去除率又下降了9.80%;当有机容积负荷从0.86kgCOD/(m3·d)增至2.56kgCOD/(m3·d)时,UBAF对NH+4-N的平均去除率仅下降了4.15%,当继续增至3.92kgCOD/(m3·d)时,对NH+4-N的平均去除率又下降了8.77%,虽降幅增大但仍能实现对NH+4-N的平均去除率75%;当NH+4-N容积负荷从0.24kgNH+4-N/(m3·d)增至0.41kgNH+4-N/(m3·d)时,UBAF对NH+4-N的平均去除率仅下降了3.59%,当继续增至0.51kgNH+4-N/(m3·d)时,对NH+4-N的平均去除率又下降了6.82%(UBAF的硝化性能加速下降)。　　:　上向流曝气生物滤池(UBAF);　硝化性能;　水力负荷;　有机容积负荷;　氨氮容积负荷:X703　　:C　　:1000-4602(2009)11-0055-04　　:(07276713D)NitrificationPerformanceofUBAFunderDifferentConditionsLISi-min1,　LIUQiang1,　SHIZhen-nan1,　WANGDong2,　TANGFeng-bing1(1.CollegeofUrbanConstruction,HebeiUniversityofEngineering,Handan056038,China;2.HandanMunicipalWastewaterTreatmentCorporation,Handan056002,China)　　Abstract:　Theup-flowbiologicalaeratedfilter(UBAF)filledwithceramicsmediawasappliedinurbansewagetreatment,andtheinfluencesofhydraulicloading,organicvolumetricloadingandammonianitrogenvolumetricloadingonthenitrificationperformanceoftheUBAFwereinvestigated.TheresultsshowthatthenitrificationperformanceofUBAFquicklydecreaseswiththeincreaseofhydraulicloading.Whenthehydraulicloadingincreasesfrom0.8m3/(m2·h)to1.5m3/(m2·h),theaverageremovalrateofNH+4-NbytheUBAFonlydropsby4.87%,andwhenthehydraulicloadingincreasesto2.2m3/(m2·h),theaverageremovalrateofNH+4-Ndropsby9.80%.Whentheorganicvolumetricloadingincreasesfrom0.86kgCOD/(m3·d)to2.56kgCOD/(m3·d),theaverageremovalrateofNH+4-NbytheUBAFonlydeclinesby4.15%,andwhentheorganicvolumetricloadingincreasesto3.92kgCOD/(m3·d),theaverageremovalrateofNH+4-Ndropsby8.77%,however,theaverageremovalrateofNH+4-Ncanbestillabove75%.WhentheNH+4-Nvolumetricloadingincreasesfrom·55·25　1120096　　　　　　　　　　　　CHINAWATERWASTEWATER　　　　　　　　　　　　　Vol.25No.11Jun.20090.24kgNH+4-N/(m3·d)to0.41kgNH+4-N/(m3·d),theaverageremovalrateofNH+4-NbytheUBAFonlydropsby3.59%,andwhentheNH+4-Nvolumetricloadingincreasesto0.51kgNH+4-N/(m3·d),theaverageremovalrateofNH+4-Ndecreasesby6.82%,andthedecliningtrendofUBAFnitrificationperformanceisaccelerated.　　Keywords:　up-flowbiologicalaeratedfilter(UBAF);　nitrificationperformance;　hydraulicloading;　organicvolumetricloading;　ammonianitrogenvolumetricloading　　、、、,(),、[1～3]。,(UBAF)、,,,、。UBAF,,、UBAF,UBAF。1　试验材料和方法1.1　UBAF,1。1　Tab.1　Propertiesofceramicsmedia/mm/(g·cm-3)/%/(m2·m-3)SiO2/%Al2O3/%Fe2O3/%3～51.5255～78398062～6818～226～91.2　2UBAF,,1UBAF1。1　Fig.1　SchematicdiagramofUBAF2000mm,200mm,250mm,1250mm,500mm。250mm,。、、。1UBAF2UBAF。1.3　,2。《》(4)。2　Tab.2　Qualityofrawwastewater/℃pHCOD/(mg·L-1)NH+4-N/(mg·L-1)TN/(mg·L-1)TP/(mg·L-1)18.5～29.57.2～7.9114～47528.2～57.155.2～85.33.1～7.524.57.628241.365.35.32　结果与讨论2.1　UBAF1.86～2.31kgCOD/(m3·d)、0.26～0.31kgNH+4-N/(m3·d)、3∶1,UBAF2。2　UBAFFig.2　InfluenceofdifferenthydraulicloadingonUBAF'snitrificationperformance2,0.8m3/(m2·h),UBAFNH+4-N84.13%～87.49%,·56·25　11　　　　　　　　　　　　　　　　　　　　　　　　　　、NO-3-N6.50、17.70mg/L;1.5m3/(m2·h),UBAFNH+4-N78.82%～83.46%,81.01%,NH+4-N、NO-3-N7.07、14.94mg/L;2.2m3/(m2·h),UBAFNH+4-N67.68%～75.31%,71.21%,NH+4-N、NO-3-N10.80、9.65mg/L。2,0.8m3/(m2·h)1.5m3/(m2·h),UBAFNH+4-N4.87%,NH+4-N0.57mg/L、NO-3-N2.76mg/L;2.2m3/(m2·h),UBAFNH+4-N9.80%,NH+4-N3.73mg/L、NO-3-N5.29mg/L。,,UBAF,。,,UBAF;,,,NH+4-N,UBAF。2.2　UBAF0.32～0.41kgNH+4-N/(m3·d)、1.5m3/(m2·h)、3∶1,UBAF3。3　UBAFFig.3　InfluenceofdifferentorganicvolumetricloadingonUBAF'snitrificationperformance3,0.86～1.81kg-COD/(m3·d),UBAFNH+4-N86.26%～91.42%,88.18%,NH+4-N、NO-3-N4.97、15.64mg/L;1.90～2.56kgCOD/(m3·d),UBAFNH+4-N76.65%～86.71%,84.03%,NH+4-N、NO-3-N6.79、15.52mg/L;2.73～3.92kgCOD/(m3·d),UBAFNH+4-N72.08%～79.85%,75.26%,NH+4-N、NO-3-N10.23、12.64mg/L。,,UBAFNH+4-N,NO-3-N,UBAF。3,0.86kg-COD/(m3·d)2.56kgCOD/(m3·d),UBAFNH+4-N4.15%,;3.92kgCOD/(m3·d),UBAFNH+4-N8.77%,,UBAF。,,,,,,,。,,UBAF。,UBAFNH+4-N75%,UBAF。,,,、C/N,;,UBAF,,,,·57·:UBAF25　11,。,UBAF。2.3　NH+4-NUBAF1.86～2.56kgCOD/(m3·d)、1.5m3/(m2·h)、3∶1,NH+4-NUBAF4。4　NH+4-NUBAFFig.4　InfluenceofdifferentNH+4-NvolumetricloadingonUBAF'snitrificationperformance4,NH+4-N0.24～0.32kgNH+4-N/(m3·d),UBAFNH+4-N84.28%～88.05%,86.11%,NH+4-N、NO-3-N4.43、12.64mg/L;NH+4-N0.32～0.41kgNH+4-N/(m3·d),UBAFNH+4-N80.32%～84.10%,82.52%,NH+4-N、NO-3-N7.07、15.16mg/L;NH+4-N0.41～0.51kgNH+4-N/(m3·d),UBAFNH+4-N73.45%～80.24%,75.70%,NH+4-N、NO-3-N12.52、17.18mg/L。,UBAFNH+4-N。4,NH+4-N0.24kgNH+4-N/(m3·d)0.41kgNH+4-N/(m3·d),UBAFNH+4-N3.59%,NH+4-N2.64mg/L,UBAF;NH+4-N0.51kgNH+4-N/(m3·d),NH+4-N6.82%,NH+4-N5.45mg/L,UBAF,UBAF。,,、,。NH+4-N,NH+4-N,UBAF。3　结论①　0.8m3/(m2·h)1.5m3/(m2·h),UBAFNH+4-N4.87%;2.2m3/(m2·h),UBAFNH+4-N9.80%。,UBAF,。②　0.86kgCOD/(m3·d)2.56kgCOD/(m3·d),UBAFNH+4-N4.15%;3.92kg-COD/(m3·d),NH+4-N8.77%,,NH+4-N75%。③　NH+4-N0.24kgNH+4-N/(m3·d)0.41kgNH+4-N/(m3·d),UBAFNH+4-N3.59%;0.51kgNH+4-N/(m3·d),NH+4-N6.82%。NH+4-N,UBAF。④　UBAF,。:[1]　,,,.[J].,2006,22(15):71-74.[2]　WestermanPW,BicudoJR,KanfardjieffA.Upflowbio-logicalaeratedfiltersforthetreatmentof