琥珀山庄污水处理厂污泥上浮的成因与控制李凤娇

:1009-6094(2002)01-0028-03李凤娇　郑传宁　　　　　　　　　　房　霞(,230009)　(,230061)　:、。,、MLSS、,。,。,、、、、。,、。、、、、、、。:;;;;:X703　　:A0　　,。,,。1994,,。,,MLSS、,。,,。1　,1994,,,4000m3/d、MLSS3000mg/L、16h、0.089kgBOD/(kgMLSS·d)、20d、100%。::BOD=200mg/L,SS=280mg/L,TKN=60mg/L;:BOD30mg/L,SS30mg/L,pH=6～9,TKN=60mg/L。1。　　　→→→→　　　　　　↑　　　|　　　　　　||———→1　Fig.1　Technicalflowchartofsludgeworksofambervillage2　,,;,,。,SS、,,1。,、、()、、、,。1　20014Table1　TherunningdataofsludgeworksofambervillageinApril,2001　　161718212223SS/(mg·L-1)454244110108542.1　2000,,,,、。,2,。,2、3。2　Table2　Thegreasecontentinincomingmixedliquidofsludgeworksofambervillage　2000-12-212001-02-272001-05-22/(mg·L-1)5634.436.0　　,,,30～50mg/L,[1,2]。,100mg/L,,,。,,,。2.2　[3]2,4,2.5m,2580m3。,2,24。2。,2220024　JournalofSafetyandEnvironmentVol.2,No.2Apr,2002:2001-10-23:(1976-),,,。,,,。,。,2,2.0～4.0mg/L,5.0mg/L(2001517,4),,,,。,N2N2O,。2,。3　200222CODCr、Table3　AnalyzedresultaboutCODCr&greaseofincomingflowonFeb2,20028:309:4011:4012:4014:2015:2017:2018:2019:2020:20CODCr/(mg·L-1)685491439439284336294261326294/(mg·L-1)49.34310736.364.332.741.732.743254　2001517(T=22.5℃)Table4　ThecontentofdissolvedoxygeninvarioustestingspotofoxidationditchonMay17,2001(T=22.5℃)　　　　　12345DO/(mg·L-1)(2)2.32.22.42.32.4DO/(mg·L-1)5.15.35.45.56.52　　Fig.2　Planofoxidationcontentofsludgeworksofambervillage2.3　BOD5=200mg/L、CODCr=350mg/L。200012,,CODCr400～1400mg/L、BOD5500mg/L,3,,。,,。,,,,,,,,,,。,COD、,[4]。2.4　、、、,,,。20015,,,,,、,[5]。,,,。、、、、。,,。。,(H2S、CH4)。3　。,、,,,。,2。:(1),30mg/L;(2),,,,[6];(3),,;(4),,。4　　,,,。,,。,、,,、,,。References()1　TangShouyin()andWangDahui().TechnologyEngineeringofWastewaterTreatment()[M].Beijing:ChemistryIndustryPress,1998.210～2112　BeijingResearchCenterforTechnologyandEquipmentofWaterEnvironment(),BeijingScienceResearchInstituteforEnvironmentProtection()andNationalEngineeringResearchCenterforUrbanEnvironmentPollutionControl(2920024,:).EngineeringManualontheTreatmentofWasteSolid,WastewaterandWasteGas-WastewaterVolume(—)[M].Beijing:ChemistryIndustryPress,2000.2913　LiFengjiao(),ZhengChuanning()andLiShenghai().Theremovalofnitrogeninbiologicaltreatmentofurbanwastewater[J].ModernConstruct(),2001,(6):40,514　ZhangShunze().Thecontrol&countermeasureontherisingofactivatedsludge[J].ChinaWater&Wastewater(),1994,(5):45～475　WangHongchen().TheRunningControlandMaintenanceManagementofUrbanWastewaterTreatmentWorks()[M].Beijing:SciencePress,1997.83～846　TongYuheng().ThePracticalTechnologyofWastewaterTreatment()[M].Beijing:ChemicalIndustryPress,1998.191～193EXPLORINGTHECAUSESANDCONTROLMEASURESTOGETRIDOFTHESLUDGERISINGINTHESEWAGE-DISPOSALWORKSOFVILLAGEAMBERLIFeng-jiao　&　ZHENGChuan-ning(SchoolofCivilEngineering,HefeiUniversityofTechnology,Hefei230009,China)and　FANGXia(SewageWorksofAmberVillage,Hefei230061,China)Abstract:Thepurposeofthispaperistofindeffectivemeasurestosolvetheproblemofeverrisingsludgeduetothesewagedisposalbytakingthesewage-disposalPlantAmberVillage,Anhuiprovince,forexample.Whentheactivatedsludgerise,alargepartofitonthesurfacewouldloseifitwerenottobetimelytreated.Atthesametime,ifthevalueofMLSSdecreasesinoxidation,thequantityofmicroorganismwouldquicklyandsharplydecrease,whichmayleadtothetotalfailureofmicroorganismrecycling.ThispapertakestheoperationsystemoftheAmberVillageSewagePlantofHefei,asanexampletosearchforthecauseandcountermeasuresoastobeabletocontrolthesludgerisingproblem.Throughouryears'observationandpractice,thispaperhassummarizedthemaincausesleadingtotherisingofactivatedsludgeinthefollowingsixpoints:agingandsepticity,sludgereversenitrification,impactloading,over-aeration,andsludgerisingduetotheincreaseofgrease.Ourfindingssuggestthattemperaturechange,thechangeofairpressureandwateralsoaccountforthesludgerising.Ourpracticealsoshowsthatthecommonmethodsofcontrollingsludgerisingcanbesummarizedasfollows:toincreasethesludgereturnvalue;togetridofexcessivesludgetimely;tolowertheconcentrationofmixedliquor;toshortenthesludgeage;toreducethedissolvedoxygen,etc.Effectivemeasuresmayalsoincludeeliminatingofthedeadcornerofsedimentationtank,enlargingthebottomgradeofthetankandimprovingthescrapefacility,etc.Inautumnandwinterseasons,sludgerisingmaybecausedbynotdegradationofsomesyntheticdetergent,greaseaccumulationoutofthedomesticsewageaswellassoilimpurities.Keywords:risingsludge;reversenitrification;sludgeaging;grease;impactloadingCLCnumber:X703　　Documentcode:AArticleID:1009-6094(2002)02-0028-03(JournalofSafetyandEnvironment　2002,Vol.2,No.2)　　　　　/　　2002、101020021010、1124112002()11本刊辟有信息广告栏,欢迎刊登招生、会议、宣传、产品信息,联系电话[phone]。3022