采用SBR法处理革胡子鲶鱼高密度养殖废水的试验研究单建军

2014-04-022014-06-12“”2012BAD25B032013“”20120041986—。[e-mail]1984—。[e-mail]10．3969/j．issn．1007-9580．2014．04．001SBＲ200092为高效净化革胡子鲶鱼(Silurusasotus)高密度养殖排放的废水，研究了间歇式活性污泥(SBＲ)技术在不同运行模式下对养殖废水处理效果的影响并确定最优工况。以TAN、TN和COD的去除率为研究指标，设置了不同的厌氧搅拌时间和曝气时间两个变量，通过调节变量时间长短来确定试验装置处理试验水体的最优工况。结果表明，厌氧搅拌时间和曝气时间的增加均可提高TAN等的去除率，但以0～2h的阶段反应速率最快，具备显著性差异水平(P＜0．05)，而后随变量时间增加，去除率相应增大，但效果不明显(P＞0．05);最优工况为:快速进水－厌氧搅拌2h－曝气6h－沉淀、排水2h，运行周期10h，此工况下的出水TAN、TN和COD浓度和去除率分别为(12．2±0．9)mg/L、(34．6±1．1)mg/L、(71±2．1)mg/L和(71．6±4．7)%、(40．3±3．6)%、(67．7±5．1)%。SBＲ法;革胡子鲶鱼;养殖废水;水处理;厌氧搅拌时间;曝气时间S959A1007-9580(2014)04-001-04SilurusasotusNH3-N、COD。、。SequencingBatchＲeactorSBＲ、、、、1-3。4SBＲCOD95%5SBＲNH3-N、COD。6SBＲTANTN。、COD、SBＲ－－－。11．1SBＲ、、1。SBＲ300mm、500mm35L、、。SBＲ、、、。1．21。150kg/m31《》20144141Fig．1Schematicdiagramofexperimentalsystem。1Tab．1Aquacultureeffluentqualityparameters7/℃20～2221TAN/mg/L41～4543≤15TN/mg/L56～6058COD/mg/L210～230220≤100BOD5/mg/L160～180170≤30pH7．1～7．57．36～91．3“－－－－”。10min2h8-9。。22、4h42、4、6、8h816～14h。50r/min。20℃2SBＲ2000mg/L10-11。1．4SBＲTAN、TN、COD、DOpH。、DO、pHYSI566－COD12。1．5±x±s。Excel2010SPSS16．0ANOVAP＜0．05。22．1SBＲ。2、3。2hTAN、TNCODTANCOD。COD2h15．5±2．7%51．4±3．2%P＜0．054、6、8h62．3±4．8%67．7±5．1%76．8±5．9%CODP＞0．050～2h。TANTNCOD0～2h8．1±1．9%38．6±3．1%14．5±2．3%33．8±2．9%P＜0．05P＞0．05TAN8h72．3±3．2%。SBＲTN2h2～8h2《》2014414P＜0．0522hTab．2Ｒemovalratechangeswiththeaerationtimeafteranaerobicstirringfor2hoursP＜0．0534hTab．3Ｒemovalratechangeswiththeaerationtimeafteranaerobicstirringfor4hours10%4h2h。TAN、TNCOD8h80．9±2．7%、47．8±3．9%78．6±5．3%。SBＲTANCOD。2．2。。2、32h4hTAN、TNCODTN0～2h。0～2h4h2hTANCOD。TAN4hP＞0．05。SBＲ。2．3SBＲ、13SBＲ。、－2h－6h－、2h10h。TAN、TNCOD71．6%、40．3%67．7%12．2、34．671mg/L3《》2014414。3SBＲTAN、TNCOD。10～2hTAN、TNCOD8h80．9±2．7%、47．8±3．9%78．6±5．3%。2SBＲTAN、COD。3－2h－6h－、2h10h。□1．SBＲJ．20148109-110．2．SBＲJ．19939229-31．3．SBＲJ．2014439-39．4．SBＲJ．201313254-255．5．SBＲJ．201130636-38．6．SBＲJ．2005422-24．7DB37/676-2007S．8．、、SBＲJ．201333822-24．9．SBＲJ．20031619-12．10．SBＲJ．201230342-45．11BLACKBUＲNEＲYUANZKELLEＲJ．Demonstrationofnitrogenremovalvianitriteinasequencingbatchreactortreating8/domesticwastewaterJ．WaterＲesearch2008428-92166-2176．12．M．4．2002200-284．13YAOJMZHANGZHANLetal．Thecomparativestudyofrapidandenergy-savingcontrolfortheSBＲoperationJ．EnergyProcedia201216109-114．StudysequencingbatchreactoroneffluenttreatmentofhighdensitysilurusasotusaquacultureSHANJianjunZHANGChenglinGUANChongwuSONGHongqiaoWUFanSONGBenbenZHUNAGBaoluFisheryMachineryandInstrumentＲesearchInstituteChineseAcademyofFisheriesSciencesKeyLaboratoryofFisheryEquipmentandEngineeringMinistryofAgricultureShanghai200092ChinaAbstractForthepurposeofpurifyingthewaterofSilurusasotusaquacultureinhighdensityefficientlytheeffectofSBＲtechnologyinvariousoperationmodesontreatmentofwaterqualitywasstudiedandtheoptimalconditionsweredetermined．InthispaperdifferentanaerobicstirringtimeandaerationtimeweredesignedwiththeremovalrateofTANTNandCODastheresearchindexes．TheresultsshowedthatboththeanaerobicstirringtimeandaerationtimecouldincreasetheremovalrateofTANandthefastestreactionratehappenedinthestageof0-2hP＜0．05．After2hourstheremovalefficiencyalsoincreasebutthedifferenceisnotsignificantP＞0．05．Theoptimaloperatingmethodwasundertheconditionoffloodingwaterrapidlystirringanaerobicfor2hoursaeratingfor6hourssubsidinganddrainingthewaterfor2hoursandoperatingfortheperiodof10hoursinwhichthemassconcentrationofTANTNandCODwererespectively12．2±0．9mg/L34．6±1．1mg/Land71±2．1mg/Landtheremovalrateofthemwere71．6±4．7%40．3±3．6%and67．7±5．1%respectively．KeywordsSBＲtechnologySilurusasotusaquacultureeffluentwatertreatmentanaerobicstirringtimeaerationtime4《》2014414