DPRSNED系统处理低CN城市污水与硝酸盐废水的运行特性杜世明

Eco-EnvironmentalKnowledgeWebEnvironmentalScience40220192Vol．40No．2Feb．2019DPＲ-SNEDC/N*266071C/NSBＲ//DODPＲ-SNED．/3hDO0.5～1.0mg·L－160dSNEDPＲPO3－4-P＜0.5mg·L－190%COD80%SNEDCODins70%95%//45dDPＲ-SNEDPO3－4-P＜1.1mg·L－1PO3－4-P＜0.5mg·L－1、COD90%88%SNEDCODins62%90%．DPＲ-SNED．DPＲ-SNEDC/N4．DPＲSNEDPAOsX703.1A0250-3301201902-0791-08DOI10．13227/j．hjkx．2018080902018-08-112018-08-265177830451708311ZＲ2017BEE0022017M6122091994～[e-mail]*[e-mail]icsofaDPＲ-SNEDSystemTreatingLowC/NMunicipalWastewaterandNitrate-containingSewageDUShi-mingYUDe-shuangBIChun-xueWANGXiao-xia*CHENGuang-huiYUANMeng-feiZHENJian-yuanZHANGFanLTing-tingSchoolofEnvironmentalScienceandEngineeringQingdaoUniversityQingdao266071ChinaAbstractInordertorealizethesimultaneoustreatmentoflowC/NmunicipalwastewaterandhighnitratewastewaterasequencingbatchreactorSBＲinoculatedwithactivatedsludgewasusedtoinitiatethedenitrifyingphosphorusremovalcoupledwithsimultaneousnitrificationandendogenousdenitrificationDPＲ-SNED．Theanaerobic/anoxic/hypoxicdurationsanddissolvedoxygenDOconcentrationwereappropriatelycontrolledandthenitrogenandphosphorusremovalcharacteristicswereexamined．Theexperimentalresultsdemonstratedthatintheanaerobic/hypoxiaoperationmodewithananaerobicdurationof3handDOconcentrationof0.5-1.0mg·L－1thesimultaneousnitrificationofphosphorusremovalSNEDPＲsystemsuccessfullybeganin60d．TheeffluentPO3－4-Pconcentrationwasbelow0.5mg·L－1thenutrientandCODremovalefficiencieswerestablymaintainedabove90%and80%respectivelyandtheSNEDefficiencyandCODinsefficiencyreached70%and95%respectively．Whentheoperationmodewasanaerobic/anoxic/hypoxicandnitrate-containingsewagewasaddedatthebeginningoftheanoxicstageDPＲ-SNEDwasachievedwiththeeffluentPO3－4-Pconcentration＜0.5mg·L－1nutrientandCODremovalefficienciesabove88%and90%respectivelyandSNEDefficiencyandCODinsefficiencymaintainedat62%and90%respectively．AfterthesuccessfulinitiationofDPＲ-SNEDenhancedintracellularcarbonsstoragewasachievedbyphosphorus-andglycogen-accumulatingorganismsusingthelimitedcarbonsinrawmunicipalwastewatertoprovidesufficientcarbonsourcesforsubsequentnutrientremoval．InadditiontheendogenouspartialdenitrificationensuredtheefficientnitrogenremovalperformanceoftheDPＲ-SNEDsystematlowC/Nconditionsaverage4．KeywordsdenitrifyingphosphorusremovalDPＲsimultaneousnitrificationendogenousdenitrificationSNEDphosphorousaccumulatingorganismsPAOsmunicipalwastewaternitrate-containedsewage、1．．、、、、2．40-3．1molNH+4-N1.32molNO－2-N0.26molNO－3-N．TN42．．DPＲ5～8．PHA“”910．SNEDPHA11．DPＲ-SNEDC/N．、．SNEDNO－x-NNO－2-N+NO－3-NNO－x-N12．C/N．SBＲDPＲSNEDDPＲ13～16SND17181920A2/O+MBBＲA2/O-BCOC/N、TNPO3－4-P88%、80%96%21SBＲSNEDEBPＲDOSNEDTN75%84%．DPＲSNEDC/N．C/N///DPＲ-SNED．/DO0.5～1.0mg·L－1SNEDPＲ//SNEDPＲDPＲ-SNED．C/N．11.1SBＲ113L8～11L．SBＲ/1～60d8L4C/N3L100mL1．1．2．3．4．pH5．Ph68．79．10．11．12．13．14．15～17．18．1SBＲFig．1ExperimentaldevicediagramoftheSBＲSBＲ//61～105d11L2C/N3L3L100mL1．2500±300mg·L－1．1.2SBＲMLSS3000mg·L－1SV%30%．SBＲC/N2972DPＲ-SNEDC/N2．pH7.2～7.6C/N4．SBＲNH+4-N、NO－2-NPO3－4-P1mg·L－1COD10mg·L－1NO－3-N28.09～31.2mg·L－1．1Table1Statisticsofoperationparametersineachphase11～18d219～37d338～60d461～105d/L88811//////min180180180180/min———180/min1501501501503∶83∶83∶86∶11HＲT/h14.6714.6714.6718.08DO/mg·L－10.5～1.00.5～1.00.5～1.00.5～1.02Table2Statisticsofqualityeffluentwastewaterineachphase11～18d219～37d338～60d461～105dNH+4-N/mg·L－136.09～66.7036.45～73.7636.78～81.5227.18～73.18NO－2-N/mg·L－1＜1＜1＜1＜1NO－3-N/mg·L－1＜1＜1＜1＜1PO3－4-P/mg·L－12.07～6.902.91～8.192.07～8.771.66～9.62COD/mg·L－1161.20～287.02210.30～333.20184.70～312.67228.26～355.901.315～20μmNH+4-NN-1-NO－2-NNO－3-NPO3－4-P225B-3ACODCODMLSS23SV100mL30minSVISVMLSS24DOpHPHS-3CpH．1.4CODinsCODinsDPＲ-SNEDCOD1CODins=ΔCOD－2.86ΔNO－3+1.71ΔNO－21ΔCOD、ΔNO－2ΔNO－3COD、NO－2-NNO－3-Nmg·L－11.712.86NO－2-NNO－3-NCOD．1.5CODinsCODinsDPＲ-SNEDCOD221CODins=1－2.86ΔNO－3+1.71ΔNO－2Δ()COD×100%2ΔCOD、ΔNO－2ΔNO－3COD、NO－2-NNO－3-Nmg·L－11.712.86NO－2-NNO－3-NCOD．1.6SNEDSNEDDPＲ-SNED123SNED=1－ΔNO－3+ΔNO－2ΔNH+()4×100%3ΔNH+4、ΔNO－2ΔNO－3NH+4-N、NO－2-NNO－3-Nmg·L－1．22.1DPＲ-SNED4DPＲ-SNEDPO3－4-P2．211～18dPO3－4-P4.04mg·L－1PO3－4-P2.78mg·L－1397402DPＲ-SNEDPO3－4-PFig．2VariationinthePO3－4-PconcentrationduringtheoperationalperiodoftheDPＲ-SNEDsystem5.91mg·L－17.17mg·L－1PO3－4-P60.86%．3DPＲ-SNEDNH+4-NFig．3VariationintheNH+4-NconcentrationduringtheoperationalperiodoftheDPＲ-SNEDsystem219～37d12.02mg·L－130.77mg·L－122.16mg·L－11PO3－4-P3.85mg·L－1PO3－4-P79.6%．338～60dPO3－4-P．PO3－4-P4.68mg·L－1PO3－4-P0.06mg·L－118.09mg·L－122.71mg·L－1．PO3－4-P98.24%．461～105d．PO3－4-P5.1mg·L－1．PO3－4-P63d6.68mg·L－169d1.65mg·L－170d0.57mg·L－1．PO3－4-P0.5mg·L－1．C/N．2.2DPＲ-SNED3DPＲ-SNEDNH+4-N．11～18d1～5dNH+4-N9.5mg·L－122.95mg·L－16～4972DPＲ-SNEDC/N10d5.02mg·L－1．1～10dNH+4-N73.73%．11～18dNH+4-NNH+4-N90%．219～37dNH+4-N2.43mg·L－1NH+4-N94.76%100%．338～60d．NH+4-N95%NH+4-N0.23mg·L－1．NO－2-NNO－3-N10.4mg·L－13.74mg·L－11.19mg·L－14.39mg·L－12.4．NO－2-NNO－3-NSNED．NH+4-N．461～105d//．NH+4-N0.02mg·L－1NH+4-N100%．1～3/4//．2.3DPＲ-SNEDCOD4DPＲ-SNEDCOD．11～18dCOD219.33mg·L－1COD73.81mg·L－160.63mg·L－1COD．CODinsCODins41.52mg·L－189.22%COD67.77%COD5.91mg·L－12.1．