多级AO工艺短程SND处理养猪沼液的工程调试吴浩楠

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A/OSND11234111.4000452.4011473.4026604.402660A/O。A/OCOD。SNDCOD、TN。A/ODO1.1mg/L1.5mg/LCOD、NH3-N、TN97.33、7.78、39.56mg/L。COD、TN98.66%、93.43%COD<100mg/L、NH3-N<15mg/L、TN<60mg/L。X703A1000-4602201713-0035-06CommissioningofShortcutSimultaneousNitrificationandDenitrificationinMultilevelA/OforSwineBiogasLiquidTreatmentWUHao-nan1ZHANGZhi1LIAOJian-hua2LIUChao-fu3ZHANGKe-ping4MEIZi-fan1WENGZhang-fan11.KeyLaboratoryofThreeGorgesReservoirRegion’sEco-Environment<MinistryofEducation>ChongqingUniversityChongqing400045China2.ChongqingEnvironmentalProtectionBureauChongqing401147China3.TongnanWenshiCo.Ltd.Chongqing402660China4.TongnanEnvironmentalTestingStationChongqing402660ChinaAbstractTosolvethenon-pointsourcepollutionwherethelandisn’tenoughforirrigatingbiogasliquidandinkeyrivervalleystheeffectofshortcutsimultaneousnitrificationanddenitrificationSNDinmultilevelA/Oforswinebiogasliquidtreatmentwasinvestigated.TheresultsshowedthatSNDcouldbeachievedinlowdissolvedoxygenenvironment.UnderthepositivegradientconditionDOincreasedfromanoxiato1.1mg/L1.5mg/LinwintertheconcentrationofCODNH3-NandTNineffluentreached97.33mg/L7.78mg/Land39.56mg/LrespectivelyandthetotalremovalefficiencyofCODandTNwas98.66%and93.43%.AndtheeffluentqualityreachedtheexpectationsofCOD<100mg/LNH3-N<15mg/LandTN<60mg/L.KeywordsswinebiogasliquidshortcutSNDadvancedtreatmentdissolvedoxygencon-centration201524E-mailzhangzhicq@126.com·53·331320177CHINAWATER&WASTEWATERVol.33No.13Jul.2017。TN。《》GB18596—2001TN。、COD、、12。。SND、C/N3~5。CODTN、C/NA/OA/O。11.127hm212510×10410058009000。+。1.2、、、。400~450m3/d300~350m3/d。1.31。1Tab.1Wastewaterqualityandeffluentstandardmg·L-1CODNH3-NTN6000~9000400~550500~700220~28020~6060~16040080—1001560“+++UASB+A/O”。《》GB18596—2001。、COD、NH3-N《》GB8978—1996TN<60mg/L。290m321360m3UASB11500m3A/O112。、AO。2。1392、518、185、389、269、201、188、36、220m3。1A/OFig.1FlowchartofmultilevelA/Oprocess1.4CODNH3-NNO-2-NN-1--NO-2-NTN—DOpHpH。2SND2~6。A/OSNDDO0.3~1.1mg/L。A/O、。2.1、2.1.1。80mm·63·3313.watergasheat.com。2.1.2。。5~8m3/d。2.2SNDA/O—1ADO≤0.2mg/LADO1.0mg/LODO2.5mg/L。、A/O。SND。2.2.1A/O。4。1DO≤0.2mg/LDO0.25mg/L0.25mg/L2~4DO0.5、1.0、1.5mg/L。2>2HRT1。。22~28℃A/OHRT5.64dSRT24d1150%2150%150%21MLSS3~4g/L2MLSS2.5~3g/L。2。1COD、NH3-N、TN84.70%、64.71%、64.32%TN97.97%2COD、NH3-N、TN88.80%、93.41%、88.00%TNNH3-N54.38%3COD、NH3-N、TN90.25%、98.14%、69.72%TNNO-2-N63.95%4COD、NH3-N、TN91.56%、98.19%、66.91%TNNO-3-N62.95%。0.25~1.5mg/LDOCODTN。DO0.25mg/LNH3-N。DO0.5mg/LDO1.0mg/L。2Tab.2Effluentqualityofbiogasliquidandeachfacultativeconditionmg·L-1CODNH3-NNO-2-NNO-3-NTN1878.61±116.72512.44±41.973.07±0.971.78±0.77517.29±43.711287.52±28.99180.84±16.563.60±0.840.14±0.09184.58±17.492210.45±22.1133.75±6.3528.26±5.560.05±0.0362.06±11.943183.19±10.059.55±3.05100.17±15.1546.93±10.40156.65±28.604158.48±12.799.28±4.7554.14±10.91107.75±11.57171.17±27.23TN。2.2.20.3~1.1mg/LCODA/OCOD。。5DO0.3mg/L1.1mg/L6DO1.1mg/L0.3mg/L7DO1.1、0.3mg/L3。3DOTab.3DOofeachgradientconditionmg·L-11A1O2A12O12A22O250.07±0.020.32±0.050.44±0.050.65±0.070.87±0.121.09±0.1260.14±0.031.08±0.120.89±0.140.72±0.220.62±0.230.44±0.1870.14±0.031.01±0.080.35±0.081.00±0.130.45±0.121.22±0.1724~31℃1MLSS3.5~4.5g/L2MLSS2.5~3.5g/L·73·.watergasheat.comA/OSND3313。4。3COD94.72%、93.15%、92.31%97.86%、99.29%、97.84%TN91.07%、70.31%、71.55%TN、、40.49%、88.05%、79.5%。4Tab.4EffluentqualityofbiogasliquidunderdifferentDOgradientconditionmg·L-1CODNH3-NNO-2-NNO-3-NTN1849.62±100.26492.20±19.684.90±1.571.66±0.93498.76±22.18597.71±10.7410.55±2.7018.04±4.8915.96±3.2144.55±10.806126.61±15.983.51±1.4114.19±2.42130.38±11.75148.08±15.587142.17±9.8110.63±2.6718.37±2.20112.90±7.32141.90±12.1942①A/O180%COD210%COD3%COD。2COD、。②NH3-N<11mg/L>97%NH3-N。③TN、20%。④1O97.94%、28.70%30.33%。1NH3-N、TN。⑤NO-2-N0.3~0.9mg/LNO-2-N。NO-3-N0.3~0.7mg/LNO-2-N。⑥A/OCOD0.09kgCOD/kgMLSS·dTN0.02kgTN/kgMLSS·d。⑦COD、NH3-N、TN。。2A/OCOD、C/NFig.2CODnitrogenandC/NvalueofoutletineachtankofmultilevelA/Oundergradientcondition1A、1O、2A1COD。DO0.1~0.6mg/LAOBNOBDO7。NO-2-NNH3-NNO-x-N。2O1、2A2C/N。、NH3-NNO-3-N。320169—12、、、。A/O5。·83·3313.watergasheat.com5A/OTab.5MainparametersofmultilevelA/Oafteradjustment1A1O2A12O12A22O2DO/mg·L-1≤0.20.30.60.50.80.71.00.91.31.11.5MLSS/g·L-144.544.53.5433.533.533.5SRT/d2025/%50700/%150150。12、15℃18℃。MLSS。3。3CODTNFig.3RemovalofTNandCODafteradjustmentCOD7257.90±921.48mg/L97.33±6.5mg/LCOD98.66%。TN602.38±66.70mg/L39.56±5.10mg/LTN93.43%。NH3-N7.78±2.28mg/L。。201612COD84.4~98.3mg/LNH3-N3.30~4.46mg/LTN20.8~23.1mg/LSS32~40mg/LpH7.38~7.52。4237kW50Hz44Hz。425m3/d325m3/dPAC29%100~125kg/d1.9/kg213.75/d24%50~80kg/d2.9/kg188.50/dPAM8kg/d24/kg192.00/d1093kW·h/d0.65/kW·h710.45/d1304.70/d3.07、4.01/m30.2/m3。5①DO0.3~1.0mg/LSND。DO<0.25mg/LA/ONH3-N。DO>1.0mg/L。②A/O。。③A/OCOD、NH3-N、TN97.33、7.78、39.56mg/L60%、57%53%。COD、TN98.66%93.43%。。3.07/m34.01/m3。④A/OSNDTP3~5mg/L《45·93·.watergasheat.comA/OSND33132326-332.2.J.201329992-95.3.J.2007231598-100.4.D.2012.5.D.2013.6.D.2006.7.D.2013.8.J.2012296300-307.9SunRRWangXLTuJMetal.Optimizationsimula-tiononbladenumberofgritchamberswithrotationalflowJ.ApplMechMater2013368/37011894-1897.10.J.2013308155-162.11.J.2004

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