AO一体化曝气生物滤池处理城市污水效能研究何强

A/O何　强,　段秀举,　刘亚丽(重庆大学三峡库区生态与环境教育部重点实验室,重庆400045)　　　:　为解决传统曝气生物滤池易堵塞、运行周期短的问题,通过增加缺氧处理区,将之改造为缺氧/好氧一体化曝气生物滤池,并通过正交试验对其处理城市污水的效能进行了研究。结果表明:HRT、气水比、好氧填料层厚度三个因素对COD、SS处理效能影响的主次顺序为:HRT气水比好氧填料层厚度;对NH+4-N处理效能影响的主次顺序为:好氧填料层厚度HRT气水比;对TN、TP处理效能影响的主次顺序为:HRT好氧填料层厚度气水比。通过对各因素水平的综合比较得出缺氧/好氧一体化曝气生物滤池的适宜运行参数为:HRT=9h,好氧填料层厚度=1.95m,去除COD、NH+4-N的最佳气水比=12∶1,去除SS、TN、TP的最佳气水比=6∶1。　　:“”(2001BA604A01-03-02)　　:　污水处理;　曝气生物滤池;　去除效能;　正交试验;　运行参数:X703.1　　:C　　:1000-4602(2006)23-0084-04ResearchonTreatmentEfficiencyofMunicipalWastewaterwithA/OIntegratedBiologicalAeratedFilterHEQiang,　DUANXiu-ju,　LIUYa-li(KeyLaboratoryoftheThreeGorgesReservoirRegion’sEco-EnvironmentMinistryofEducation,ChongqingUniversity,Chongqing400045,China)　　Abstract:　Inordertoresolvetheproblemsofeasyblockageandshortoperationperiodsofconven-tionalBAF,itwasreconstructedtoA/Ointegratedbiologicalaeratedfilterbyaddinganoxictreatmentzone,anditstreatmentefficiencyofmunicipalwastewaterwasinvestigatedbyorthogonalexperimen.tTheresultsshowthattheaffectingfactorsareHRT,air/waterratioandfillerlayerheigh.tTheaffectinglevelforCODandSSremovalisHRTair/waterratiofillerlayerheigh.tTheaffectinglevelforNH+4-NremovalisfillerlayerheightHRTair/waterratio.TheaffectinglevelforTNandTPremovalisHRTfillerlayerheightair/waterratio.ThesuitableoperationparametersofA/Ointegratedbiolog-icalaeratedfilterareobtainedthroughthesyntheticcomparisonofdifferentfactorsandlevels.TheyareHRTof9h,fillerlayerheightof1.95m,optimumair/waterratioof12∶1forCOD,NH+4-Nremovalandoptimumair/waterratioof6∶1forSS,TNandTPremova.l　　Keywords:　wastewatertreatment;　biologicalaeratedfilter;　removalefficiency;　orthogonalexperiment;　operationparameters　　(BiologicalAeratedFilter,BAF)、、、84第22卷　第23期2006年12月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vo.l22No.23Dec.2006、[1],。(1000m3/d)(、、)A/O(IBAF),。1　工艺流程。、、、IBAF,。1。1　Fig.1　Flowchartofexperimentalprocess　　A/O,12#14#,500m3/d,1000m3/d。,10～15mm,60cm;,5～8mm。7m×7m×4m,,2。2　IBAFFig.2　StructureofIBAF2　试验方案、pH、、、、,、pH、,、,L9(33),9。,,1/d,COD、NH+4-N、SS、TN、TP,。1。1　IBAFTab.1　SchemeoftheorthogonalexperimentHRT/h/mABCD11(6∶1)1(5)1(1.35)121(6∶1)2(7)2(1.65)231(6∶1)3(9)3(1.95)342(9∶1)1(5)2(1.65)352(9∶1)2(7)3(1.95)162(9∶1)3(9)1(1.35)273(12∶1)1(5)3(1.95)283(12∶1)2(7)1(1.35)393(12∶1)3(9)2(1.65)13　试验结果与讨论3.1　9IBAF2。2　IBAFTab.2　RemovalperformanceofIBAF%CODSSNH+4-NTNTP183.9187.7159.0330.6828.93285.8389.3664.8636.8132.63387.4590.5773.9339.4238.39485.1587.5565.9332.8529.91586.9489.1873.9536.9733.82687.9989.8669.2934.6935.78786.3487.4370.2432.2331.16887.2788.6364.5831.4431.27988.9689.8271.6336.0336.77　　3。85第23期何　强,等:A/O一体化曝气生物滤池处理城市污水效能研究第22卷3　Tab.3　StatisticsoftheorthogonalexperimentHRTCODKj1257.19255.40259.17259.81Kj2260.08260.04259.94260.16Kj3262.57264.40260.73259.87Qj67577.1067585.7767572.6867572.29Sj4.8313.500.410.023P=67572.27,W=67591.04,ST=18.77SSKj1267.64262.69266.20266.71Kj2266.59267.17266.73266.65Kj3265.88270.25267.18266.75Qj71131.1971140.3071130.8371130.67Sj0.539.640.170.0097P=71130.67,W=71140.99,ST=10.32NH+4-NKj1197.82195.20192.90204.61Kj2209.17203.39202.42204.39Kj3206.45214.85218.12204.44Qj41835.4841877.0241920.2041812.08Sj23.4164.95108.130.0093P=41812.07,W=42008.57,ST=196.50TNKj1106.9195.7696.81103.68Kj2104.51105.22105.69103.73Kj399.7110.14108.62103.71Qj10764.0610790.6810780.2910755.07Sj8.9935.6125.220.0031P=10755.07,W=10824.88,ST=69.81TPKj199.9590.0095.9899.52Kj299.5197.7299.3199.57Kj399.20110.94103.3799.57Qj9910.969985.639920.009910.87Sj0.09574.769.130.00073P=9910.87,W=9994.85,ST=83.98　　Sj,3:①　COD:SjBSjASjC,COD、、。②　SS:SjBSjASjC,SS、、。③　:SjCSjBSjA,、、。④　TN:SjBSjCSjA,TN、、。⑤　TP:SjBSjCSjA,TP、、。3.2　4。α=0.10、0.05,F0.90(2,2)=9.0、F0.95(2,2)=19.0。4,COD,FA、FB19,FC9,A、B,C;,SS,FA、FB19,FC9,A、B,C;、TNTP,FA、FB、FC19,A、B、C。4　Tab.4　SquaredeviationanalysisoftheorthogonalexperimentCODFSSFFTNFTPFA22.415210.000.26554.6411.7052517.204.49529000.0475130.14B26.75586.964.82993.8132.4756983.8717.80511487.1037.38102410.96C20.20517.830.08517.5354.06511626.8812.618135.484.56512506.8520.01150.004850.004650.001550.000365　　,CODA、B、C;SS、TN、TPB、C,A;NH+4-NA、B、C。COD[2],A:Se=0.023,r=2×3,F0.90(2,2)=9。dT=F0.90(2,2)(Se/r)1/2=0.56。|kA1-kA2|dT,|kA1-kA3|dT,|kA2-kA3|86第23期　　　　　　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　　　　　　　第22卷dT,A1、2、3。B、C:1、2、3。SS、NH+4-N、TN、TP,A、B、C。4　结论①　A/O:、COD、SS:、、;TN、TP:、、;:、、。②　、、COD、SS、、TN、TP。③　:=9h,=1.95m。COD、NH+4-N=12∶1,SS、TN、TP6∶1。:[1]PujolR.Processimprovementsforupflowsubmergedbio-filters[J].Water21,2000,32(1):25-29.[2]　,.[M].:,1985.E-mail:[e-mail]:2006-08-25(上接第83页),,。,,,SS20mg/L。,,,,,,,。HRT1h,COD,,HRT45min30min,,。,,,,,1#COD。3　结论、,COD65%,,。∶=1∶3COD42%,40,,。,。:[1]　,,.、[J].,2004,34(1):1-3.[2]　,,.[J].,2003,19(3):11-13.[3]　,,,.[J].(),2004,23(1):61-64.:[phone]E-mail:[e-mail]:2006-08-0387第23期何　强,等:A/O一体化曝气生物滤池处理城市污水效能研究第22卷