改良A2O工艺的工程实践李绍秀

75Vol.7,No.520065TechniquesandEquipmentforEnvironmentalPollutionControlMay2006A2/O李绍秀　谢　晖(,510640)　　　郭　玉(,510385)　　A2/O,。,,,。　A2/O　　　X703.1　　　A　　　1008-9241(2006)05-0132-03EngineeringpracticeofmodifiedA2/OprocessLiShaoxiu1　XieHui1　GuoYu2(1.FacultyofConstructionofGuangdongUniversityofTechnology,Guangzhou510640;2.GuangzhouJingshuiWaterCompanyLimited,Guangzhou510385)Abstract　Multiple-influentmodifiedA2/Oprocesswasusedinamunicipalwastewatertreatmentplant,goodeffectofbiologicalremovalofnitrogenandphosphoruswasgained.Inprocessoperation,dissolvedoxygenrequirementofeachunitinbiologicalreactorwasensuredbytakingeffectiveadjustmentandcontrolmeasures,andwelloperationparametercontrolrangewasobtained.Keywords　modifiedA2/Oprocess;removalofnitrogenandphosphorus;processoperation:2005-08-22;:2005-12-04:(1967～),,,,。E-mail:[e-mail]1　　A2/OA2/O,A2/O,,,,[1,2];,A2/O,,。。A2/O,。20×104t/d,2004。,10×104t/d。,。2　、2.11。1　Fig.1　Flowchartofwastewatertreatmentprocess2.2　1。、、:1420m3、5760m3、7180m334580m3,2。5:A2/O1　Table1　Principaltreatmentstructuresandequipment　4m,50mm1　30mm,6mm2　7.3m,6m2　48940m32　50.0m,6m4　20012　Fig.2　Layoutdrawingofeachunitinbiologicalreactor3　2004,。,20051,。2。2　Table2　OperationresultanddesignedwaterqualityofinfluentandeffluentBOD5SSTNNH3-NTP(mg/L)12717028205.0(mg/L)≤20≤20≤15≤8≤1.520051(mg/L)14214934.923.93.32(mg/L)8.499.714.72.130.53(%)94.0293.4957.8891.0984.042,20051BOD5、TNNH3-N,,,84.04%,A2/O,。4　,,//,,,。4.1　A2/O。,2。,,2DO2.0mg/L。,,,,,,。,21。,,21,。,2。,,。,15%11%,,。,70%67%。122%,,,212,。21,2,。:、0.2mg/L;21.0mg/L,12.0mg/L。4.2　BOD-(FM/)、(SRT)[3,4]。。FM/,SRT,1337,,。。,,NH3-NNO-3-N。,。,。。,,。,FM/0.1～0.15kgBOD5/kgMLVSSd。A2/O,(FM/)。0.17～0.26kgBOD5/kgMLVSSd,。,,;,,,,,,,,。0.17～0.26kgBOD5/kgMLVSSd,21.0mg/L,7d。4.3　[5],,BOD5。。,7～10d,,8d,,8～12d。A2/O6～12d。13～15d,。,,13～15d,,。4.4　。,,,TN。,,,,,。,,[6]。200%～500%。200%,。,,。,R,,;,,R,,;,,[3,7]。A2/O45%～50%。5　　A2/O,。,:(1):、0.2mg/L;21.0mg/L,12.0mg/L;(2):0.1～0.15kgBOD5/kgMLVSSd;(3):6～12d;(4)200%,45%～50%。[1],,.A2/O.,2003,29(3):22～26[2],,.A2/O.,2004,20(12):76～78[3],,..,2002,22(1):37～39[4]..,2002,24(2):85～87[5],.3.,2004,5(5):15～17[6],.A2/O.,1998,14(3):27～30[7]..:,1996134