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A2/O张 波1, 高廷耀2(1.青岛建筑工程学院环境工程系,山东青岛266033;2.同济大学污染控制与资源化研究国家重点实验室,上海200092) : 通过短时厌氧环境的生化特性、厌氧/缺氧环境倒置效应和小型系统平行对比试验,较系统地研究了倒置A2/O工艺的原理和工艺特点。指出:①聚磷菌厌氧有效释磷水平的充分与否,并不是决定其在后续曝气条件下过度吸磷能力的充分必要条件。推进聚磷菌过度吸磷的本质动力与厌氧区HRT和厌氧环境的厌氧程度有关。在一定范围内,厌氧环境的HRT越长,厌氧程度越充分,聚磷菌的吸磷动力越强。②把常规生物脱氮除磷系统的厌氧、缺氧环境倒置过来,可以得到更好的脱氮除磷效果。小型系统平行对比试验表明,倒置A2/O工艺的氮磷脱除功能明显优于常规A2/O工艺,其COD去除能力则与常规A2/O工艺相当。 : 污水处理; 脱氮; 除磷; 倒置A2/O工艺:X505 :A :1000-4602(2000)07-0011-05PrincipleandCharacteristicsofReversedA2/OProcessZHANGBo1, GAOTing-yao2(1.Depart.ofEnviron.Eng.,QingdaoConstructionInstitute,Qingdao266033,China;2.StateKeyLab.ofPollutionControlandResourceReuse,TongjiUniv.,Shanghai200092,China) Abstract: Thebiochemicalcharacteristicsofshort-timeretentioninanaerobiczoneandsequencereversingofanaerobicandanoxiczonesonphosphorusreleaseanduptakewerestudiedinbench-scaleexperiments.Theresultsshowedthat:(1)theeffectivephosphorusrelease,fullyornot,isnotthesufficientandnecessaryconditiondecidingtheabilityofexcessP-uptake.Toacertainextent,arela-tivelylongerHRTandamoresufficientanaerobicenvironmentproduceastrongerpotentialofexcessP-uptakeinthefollowingaerobiccondition.(2)amuchbettereffectofN-PremovalcanbeobtainedinbiologicalnutrientremovalprocessbyreversingthepositionofanaerobicandanoxiczonesandturningintoreversedA2/Oprocess.ItsphosphorusandnitrogenremovalratesaremarkedlyhigherthanthatofconventionalA2/Oprocess,whereastheCODremovalratesareaboutequal. Keywords: wastewatertreatment; nitrogenremoval; phosphorusremoval; reversedA2/Oprocess (A1)/(A2)/(O)。,:,,[1]。,①,、,,;②,·11· 2000Vol.16 CHINAWATER&WASTEWATER No.7,;③,,(UCT);④,—[2、3]。,(A1/A2/O)。1 材料与方法,。1。1 COD(mg/L)400~800MLSS(g/L)3.0~4.0BOD5(mg/L)150~450VSS/SS0.60~0.64TN(mg/L)45~65N(mgN/gVSS)110~130TP(mg/L)2.5~10.0P(mgP/gVSS)48~60VFA(mg/L)25~173SVI180~2302 试验结果与讨论2.1 ,、。① 2,3.0L(1)。1,2,。15~20r/min,。1 1,HRT=2.0~3.0h,24~29℃。VFA,。,。2,。,,,,2h,VFA,2。2 VFA2,,VFA,VFA。,VFA()。,,,100。,,,。AndrewsPearson(1965)VFA,,HRT=2.5dVFA。HRT=2~3h(HRT),COD500mg/L。,,VFA,1VFA,。2,,VFA。,,VFA。,,VFA。② 1、2,3L,3L1、2,;2~3h,30h、,3。·12·2000Vol.16 No.73 (a)3 (b)3 (c)3 (d)3(a~d)。,3VFA。3(a、c)3h,3(b、d)2h。:①VFA,1、2,。②1,2。VFA,ORP1VFAPHB,。,12。3(d)VFA,12,,21。1VFA,VFA,VFA,1。2,1。3(d),12,VFA,3(a、b)。③,12,3h2h,3(b、d)。,,。,。,,,,ORP,。,。(PHB),。3h2h,。2.2 、2,3.0L,。、1(2),15~20r/min。,,3L,3L,。1KNO3,、。·13·2000Vol.16 No.72h,2KNO3。4h,,。,1A2/A1/O,2A1/A2/O。30min,PO3-4-PNO-3-N,4。4,1,2h,、。2,1;30min,;60min,,;240min,6.5mg/L。A,,1A′。4 /2120min,2h,2h。22h,120minPO3-4-P7.3mg/L。120min,,ATP,。180min,。,2,,1。,1PO3-4-P6.5mg/L,25.3mg/L。480min,1PO3-4-P0.1mg/L,2PO3-4-P1.05mg/L,10。,,14.12mgN/(h·gVSS),22.80mgN/(h·gVSS),12。,、,。A2/A1/O,,A1/A2/O。,,,,。,0.5~1.0,2.0~3.0。,、,。,,。,A2/A1/O、,,,“”。A2/A1/O,,。,A1/A2/O50%。,A2/A1/O,。,,、。2.3 A2/O,1A2/O,2A2/O。77.2L,A2(A1)∶A1(A2)∶O=1∶1∶2,2.1h,。,,,MLVSS2~3g/L,COD50mg/L,。2。A2/O,,A2/O20%。,12,28h,MLVSS2。,1。·14·2000Vol.16 No.72,COD,90%,COD50mg/L,1COD2。,A2/OCODA2/O,。,。1(A2/O)TN8.9mg/L,84.7%;2(A2/O)TN14.9mg/L,74.4%。1TN210%。,1TP0.67mg/L,TP29%。A2/OA2/O。2 A2/OA2/O(1)A2/O(2)(℃)29.629.6HRT(h)88DO(mg/L)1.82.02.00.7101.802.02.51MLVSS(mg/L)21171960(d)1212COD(mg/L)44644639.938.7(%)91.191.3TN(mg/L)58.158.18.914.9(%)84.774.4TP(mg/L)9.69.60.671.51(%)93.084.33 结论① ,(HRT=2~3h)VFA,VFA。② ,。,。(PHB),。③ HRT。,HRT,,。④ 、,。:a.,,ORP,;b.,;c.,,。⑤ A2/OA2/O,A2/OA2/O,CODA2/O。⑥ ,A2/O。,—,“”,。:[1] .[J].,1994,7(5):1-6.[2] .MLSS[J].,1993,19(8).[3] MaekawaT,Chun-MinL,Xing-DongF.Nitrogenandphosphorusremovalforswinewastewaterusingintermit-tentaerationbatchreactorfollowedbyammoniumcrys-talliztionprocess[J].WaterResearch,1995,29(12):2643.:(1962- ), , , , , :。:(0532)5071009:(0532)5071000E-mail:zhangbo@qdiae.edu.cn:2000-02-25·15·2000Vol.16 No.7
本文标题:倒置A2O工艺的原理与特点研究张波
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