鹤山市某城镇污水处理厂脱氮除磷工艺改造实践

1,2,2,3,2,2(1.,510641;2.,510655;3.,529700):,,,,A2/O,:;;A2/O;:X703.1:C:1000-4602(2008)18-0083-04ReconstructionPracticeofNitrogenandPhosphorusRemovalProcessinaWastewaterTreatmentPlantofHeshanCityYANGHan2xin1,2,WANGWen2xiang2,JIANGXiong3,QIUZhi2ping2,LIANGZhan2xing2(1.CollegeofEnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510641,China;2.GuangdongVocationalTechnicalSchoolofEnvironmentalProtection,Guangzhou510655,China;3.HeshanWastewaterTreatmentPlant,Heshan529700,China)Abstract:BecausetheoriginaldesignofawastewatertreatmentplantofHeshanCityhadflaws,theeffluentnitrogenandphosphoruswerenotabletoreachthedischargestandard.Inordertomeetthedischargestandard,undertheconditionofnotaddingnewstructure,theoriginalwastewatertreatmentprocesswasreconstructedintoA2/Oprocessbyaddingamixed2liquorreturnsystem,improvingthesludgerecyclesystem,andamelioratingthesludgetreatmentprocesses.Theeffluentqualityafterrecon2structioncansteadilyachievethedischargestandard.Keywords:urbanwastewatertreatmentplant;reconstruction;A2Oprocess;nitrogenandphosphorusremoval2090,,,[1],,A/OA2/OSBR[2],A2/O,[3]A2/O[4],,,38241820089CHINAWATER&WASTEWATERVol.24No.18Sep.2008[5],A2/O,11993,2001,(),,,11111Tab.1InfluentqualityofWWTPpHSS/(mgL-1)COD/(mgL-1)BOD5/(mgL-1)/(mgL-1)/(mgL-1)69130200250350100180304557,(GB189182002)B(GB35442001),22Tab.2EffluentdischargestandardafterrenovationpHSS/(mgL-1)/COD/(mgL-1)BOD5/(mgL-1)/(mgL-1)/(mgL-1)/(L-1)69203040208110411211Fig.1Wastewatertreatmentprocessbeforerenovation//(A/O2),,;,,,,,33Tab.3InfluentandeffluentqualitybeforerenovationmgL-1SSCODBOD5252.3275.6185.332.26.8186.6226.2166.828.65.9111.890.442.230.85.855.936.217.828.45.639.233.316.924.25.837.231.616.123.85.73,CODBOD5,SS,,50mm,,30mm,,,;,,,,,,,,:,,45kW,,35m3/min,2.51,,1.4mg/L,,,4,,482418(75kW),2.51(59)1,,,,,,,;,NO-3-N;,,,,,,SS,,,A,,320083,4,,58:2418,44200856Tab.4InfluentandeffluentqualityofWWTPfromMaytoJun.2008mgL-1BOD5CODSSNH+4-NTP515173.718.8280.735.818914.719.26.74.40.9519169.116.6287.932.618315.723.66.74.60.6524157.815.6320.723.517512.327.75.83.40.4530166.916.4332.521.31598.521.76.94.70.767175.513.3310.316.71659.118.85.24.90.4615169.312.3325.317.817913.425.47.43.80.6168.715.5309.624.617512.322.76.54.30.64,A/O2A2/O,;,;,SS,,,,:[1].[J].,2006,17(1):5-7.[2],,,.[J].,2008,34(3):39-41.[3].(A2/O)[J].,2006,120(2):46-47.[4].[J].,2006,22(4):34-36.[5].[J].,2006,(3):59-61.E-mail:[e-mail]:2008-07-142009()()1981,,,,,,,,,,16,96,,,:6-61:4515MO:10:120:85:300131:022-2651211226678212:022-26678212