NaCl盐度对SBR工艺短程硝化反硝化的影响张兰河

39220132JOURNALOFBEIJINGUNIVERSITYOFTECHNOLOGYVol．39No．2Feb．2013NaClSBR1211311.1320122.1500903.132012sequencingbatchreactorSBRNaCl、hydraulicretentiontimeHRT．pH、dissolvedoxygenDO7.5～8.5、30～35℃0.5～1mg/LNaCl、chemicaloxygendemandCOD5.8～25.0g/L、450～550mg/L35～45mg/LNO－2-N50%．NaCl14.5g/LHRT6.21h1kgCDD5.03×10－22.24×10－3kg99%．HRT、25g/L．X703.1A0254－0037201302－0280－07EffectofNaClSalinityonShort-cutNitrificationandDenitrificationUsingSBRZHANGLan-he12FUXiang-yu1YANGTao1NIYing3ZHANGWan-you11.SchoolofChemicalEngineeringNortheastDianliUniversityJilin132012JilinChina2.StateKeyLaboratoryofUrbanWaterResourceandEnvironmentHarbinInstituteofTechnologyHarbin150090China3.JilinFuelAlcoholLimitedCompanyJilin132012JilinChina2011-01-17．QA20101320090599．1971—[e-mail]alinityhydraulicretentiontimeandinfluentloadingonshort-cutnitrificationanddenitrificationwasinvestigatedusingsequencingbatchreactor．ResultsshowthattheaccumulationrateofNO－2-Nishigherthan50%whenNaClsalinitypHtemperaturedissolvedoxygeninfluentchemicaloxygendemandandconcentrationofammonianitrogenare5.8－25.0g/L7.5－8.530－35℃0.5－1mg/L450－550mg/Land35－45mg/Lrespectively．Furthermorenitriteaccumulationrateishigherthan99%whenNaClsalinityHRTorganicloadingandammonianitrogenloadingdailyof1kgsuspendedsolidscontainedare14.5g/L6.21h5.03×10－2kgand2.24×10－3kgrespectively．ThereforeshortcutnitrificationanddenitrificationcanbeachievedbycontrollingHRTorganicloadingandammonianitrogenloadingathighconcentrationofNaCl．ThelimitingconcentrationofNaClfornitrosobacteriaisupto25g/L．Keywordsshort-cutnitrificationanddenitrificationsequencingbatchreactorSBRshockloadingnitritenitrogen2NaClSBR、、．．Dincer1．ρNaCl5%10%chemicaloxygendemandCODηCOD85%60%．Hamoda2ρNaCl0、1030g/LtotalorganiccarbonTOC96.3%、95.9%99.2%．Panswad3A2/O10d、、hydraulicretentiontimeHRT2、212hCOD=500mg/LρNaCl030g/LηCOD97%60%ηCOD97%71%．．410h2%ηCOD80%～86%GB8978—1996．5ρNaCl=60g/LHRT=13h、pH=7.5、25℃COD=90714～121010mg/L、ρNH+4-N=8612～9917mg/L、ρPO3－4-P=316～511mg/LηCOD、ηNH+4-NηPO3－4-P73.9%、38.6%93.5%．ρNaCl、HRT、．25%、40%、、、30%～40%6．SBRρNaClHRT、SBR．11.1sequencingbatchreactorSBR2.5L○/20cm×50cm．、、、、5．1∶1．ρDOOxi33102～3mg/LρDO0.5～1mg/L．ηANO－2-NηCOD．ηANO－2-NηCOD．CH3COONapH3310ORP．30～35℃pHNaHCO37.5～8.5mixedliquorsuspendedsolidsMLSS3150～3380mg/LsludgevolumeindexSVI61～163mL/g．4．1．1SBRFig．1SchematicdiagramofSBRexperimenalequipment1.2SV30=38%SVI=86mL/gρMLSS≈3200mg/L．ρNH4Cl=34～45mg/LρCH3COONa=480mg/LρKH2PO4=4mg/LρCaCl2=68mg/LρFeSO4=1.2mg/LρMgSO4=8mg/LρZnSO4=3.2mg/L．1.3ρNH+4-N、ρNO－3-N、ρNO－2-NN-1--、CODpHpHs－2CpHDO1822013OXI3310ORPWTWpH3310ORP0～100℃．22.1HRT6.1～7.2hCOD450～550mg/L．2ρinNH+4-N35～45mg/LηNH+4-N18%．ρNaClηNH+4-NρNaCl5.6g/L40dηNH+4-N98%．0～40dηNH+4-N．40ρNaCl5.6～24.8g/LηNH+4-N100%．ρNaCl＞24.8g/LρNaClηNH+4-N．、ATP．．7．ⅠρNaCl=0～5.6g/LⅡρNaCl=5.6～24.8g/LⅢρNaCl＞24.8g/L2ρNaClηNH+4-NFig．2EffectofNaClconcentrationontheremovalefficiencyofammonianitrogen345d．ρNaCl=5.0g/LρNO－2-N/ρNO－2-N+ρNO－3-N＞50%．ρNaCl=8.0g/LρNO－2-N=78.6%．ρNaCl=14.5g/LηANO－2-N100%ρNaClρeffNO－2-NρNO－3-N．ρNaCl＞17.2g/LηANO－2-N．8SBR17.6g/L17.6g/L．924.5g/L．25g/LρNaClρNaCl．ρNaCl8.0～17.2g/LηANO－2-N＞92.3%．ⅠρNaCl=0～8g/LⅡρNaCl=8～17.2g/LⅢρNaCl=17.2～25g/LⅣρNaCl＞25g/L3ρNaClηANO－2-NFig．3EffectofNaClconcentrationontheaccumulationrateofnitritenitrogen4NaClηANO－2-N．3417dρNaCl．2822NaClSBR4NaClηANO－2-NFig．4VariationofaccumulationrateofnitritewithoutNaCl2.2HRT．ammonia-oxidizingbacteriaAOBnitrite-oxidizingbacteriaNOBSBRAOBNOBAOB10．HRT5.12、6.21、7.268.24hρNaClSBR．5ρinNH+4-N35～45mg/LρNaClHRT．1．51HRT．HRTρNaCl=14.5g/LηANO－2-NρNaCl=5g/LηANO－2-N．SBRHRTηANO－2-NHRT6.21h．5HRTηANO－2-NFig．5EffectofHRTontheaccumulationrateofnitriteatdifferentsalinities1ρNaClHRTTable1EffectofHRTontheshort-cutnitrificationatdifferentsalinitiesρNaCl/g·L－1514.518HRT/h5.126.217.268.245.126.217.268.245.126.217.268.24ηANO－2-N/%42.350.833.223.689.898.764.225.745.373.237.88.2382201311=ρinNH+4-N－ρeffNH+4-NHRT1ρinNH+4-NρeffNH+4-N．1ρNaClHRT2．HRT．HRTρNaCl．12HRTρeffNH+4-NρeffNO－2-N．HRTNH+4-NNO－2-N．HRT=5.12h．2HRTTable2Effectofhydraulicretentiontimeonthenitrificationrateatdifferentsalinitiesmg/L·hρNaCl/g·L－1HRT/h5.126.217.268.2457.427.246.335.60107.817.296.305.6114.58.007.406.365.59187.617.406.375.89247.267.136.225.492.321ρNH+4-N45mg/LCODρNaCl2COD510mg/LρNH+4-N．2.3.1CODa～dρNaClηANO－2-NρNO－2-N3．3COD320mg/LρNO－2-NρNaClCOD510mg/LηANO－2-NCOD730920mg/LηANO－2-NpH8.5～9.6．1312～14℃30℃pH7.0～8.5DO．ρDO、30℃0.3～0.5/h30℃0.085h－1DODO．ρDO0.5～1.0mg/LρNaClcdηANO－2-NaηANO－2-N．ρNaCl=14.5g/L1kgCOD=50.3gηANO－2-N99.6%．3ηANO－2-NTable3EffectofinfluentCODloadingontheaccumulationrateofnitritenitrogenatdifferentsalinitiesρNaCl/g·L－1ρNH+4-N/mg·L－1a320mg/Lb510mg/Lc730mg/Ld920mg/LρNO－2-N/mg·L－1ηANO－2-N/%ρNO－2-N/mg·L－1ηANO－2-N/%ρNO－2-N/mg·L－1ηANO－2-N/%ρNO－2-N/mg·L－1ηANO－2-N/%545.220.750.831.774.228.664.528.864.31044.530.875.834.392.431.584.329.471.614.544.934.192.238.599.636.897.532.689.41844.718.751.320.460.418.549.317.347.62444.816.742.618.951.817.345.716.843.02.3.2COD508～515mg/L、ρinNH+4-Na'～d'ρNaCl4．4ρNaCl10、14.5g/L4822NaClSBR4ηANO－2-NTable4Effectofinfluentammonianitro