复合型人工湿地模型对污水厂尾水的深度净化效果赵安娜

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  2010,26(6):579-585JournalofEcologyandRuralEnvironment赵安娜1,2,柯 凡1,2,郭 萧1,2,冯慕华1,潘继征1,李文朝1① (1., 210008;2., 100049):、4。,0.13m3·m-2·d-1,ρ(CODCr)ρ()(NH+4-N)Ⅲ(GB3838—2002);ρ(TP)《》(GB18918—2002)B,ρ(TP)Ⅲ。0.06m3·m-2·d-1,ρ(TP)ρ(TN)Ⅲ。TN,TP。:;;;;N;P:X703  :A  :1673-4831(2010)06-0579-07EffectofConstructedComplexWetlandModelonDeep-PurifyingofTailwaterFromWastewaterPlant.ZHAOAn-na1,2,KEFan1,2,GUOXiao1,2,FENGMu-hua1,PANJi-zheng1,LIWen-chao1(1.StateKeyLaboratoryofLakeScienceandEnvironment,NanjingInstituteofGeographyandLimnology,ChineseAcademyofSciences,Nanjing210008,China;2.GraduateSchoolofChineseAcademyofSciences,Beijing100049,China)Abstract:Aconstructedcomplexwetlandmodel,consistingofafirst-stepverticalflowwetland(VFW),foursequentialsubmergedmacrophyteoxidationpondsandasecond-stepVFW,wasusedtotreattailwaterfromasmallurbanwastewatertreatmentplant.Resultsshowthatwhenthehydraulicloadingofthemodelwas0.13m3·m-2·d-1,theoutflowhadon-lyCODCrandNH+4-NuptoGradeⅢCriteriaoftheEnvironmentalQualityStandardsforSurfaceWater(GB3838-2002),butwhenρ(TP)intheinflowsatisfiedGradeⅠBCriteriaofthestandardforpollutantdischargefrommunicipalwastewatertreatmentplants(GB18918-2000),TPintheoutflowalsometGradeⅢCriteriaoftheEnvironmentalQuali-tyStandardsforSurfaceWater.Whenthehydraulicloadingatthesecond-stepVFWwasadjustedto0.06m3·m-2·d-1,botheffluentTPandTNfinallymettheGradeⅢCriteria.Itisassumedthatinthemodel,TNwasremovedmainlybyfiltrationandadsorptioninfirst-stepVFWandbydenitrificationinthesecond-stepVFW,whileTPwasmainlyremovedthroughadsorptionandsedimentationbylimestoneinfirst-stepVFW.Keywords:constructedcomplexwetland;wastewatertreatmentplant;tailwater;deeptreatment;nitrogen;phosphor-us:(2006AA06Z325);(2008CB418005);(2008ZX07101-007-05):2010-02-05①E-mail:wchli@niglas.ac.cn  ,。,,。,。、,、。,、、、[1],,[2]。,、,,、、。“”[3]“※※※※”,,III(GB3838—2002)。,“※※”,        26,,Ⅲ。1 1.1 ,,6(d=130cm,d=140cm,h=138cm),、4(1)。10cm,。1.1.1 (1#6#)50mm(30~50mm),(d=20mm,),PVC(d=32mm,1②)。120cm(37%),10cm,10cm(Acoruscalamus)。、10cm,PVC,(1④),6。1.1.2 (2#、3#、4#5#)50mm,,40(d=19cm,d=15cm,h=20cm),(Hydrillaverticillata)、(Ceratophyllmdemersum)、(Myriophyllumspicatum)(Vallisneraspiralis)10。4,2~4,。1.1.3 (1.5m×1.5m×1.5m),。1。PVC,,,,,,。,。①;②PVC;③;④;⑤2,4;⑥。1 Fig.1 Technicalflowchartoftheconstructedcomplexwetland1.2 1.2.1 ,2000。(1)。·580· 6 :1 Table1 Physicalandchemicalpropertiesoftailwater/℃ρ(DO)/(mg·L-1)Eh/mVpHρ(CODCr)/(mg·L-1)ρ(SS)/(mg·L-1)6.4~25.50.80~7.39135~3905.68~9.824.1~200.00.4~375.017.84.372337.3141.260.7ρ(TN)/(mg·L-1)ρ(NO-2-N)/(mg·L-1)ρ(NO-3-N)/(mg·L-1)ρ(NH+4-N)/(mg·L-1)ρ(TP)/(mg·L-1)ρ(PO43--P)/(mg·L-1)3.2~20.00.04~0.360.56~14.300.02~5.070.14~5.490.09~2.5212.60.228.331.391.320.621.2.2 ,2:(1)2008928200963,8.3d,0.13m3·m-2·d-1,CODCr0.39~26.00g·m-2·d-1;(2)200964923,1#~5#1,5#,,6#6#,6#22.68d,0.06m3·m-2·d-1,CODCr0.40~1.20g·m-2·d-1。1.3 、9、5cm,。0,1、2、3、4、56。、pH、DO、Eh、CODCr、TN、NO-3-N、NH+4-N、TPPO43--P。[4]:,DOJPB-607,pHEhORP-412,CODCr,TN,NO-3-N,NH+4-N,TP,PO43--P。2 2.1 2,7.3~32.4℃,200918、1519310℃,10℃。17.3~17.8℃,。2 Table2 Variationofthephysicalandchemicalpropertiesofthetailwaterthroughconstructedcomplexwetlandmodel/℃ρ(DO)/(mg·L-1)07.4~25.517.84.33.20~7.395.601.1317.3~32.117.55.12.60~8.764.062.0827.4~32.417.75.24.30~17.208.373.7537.6~32.317.75.14.90~20.5011.803.9147.7~32.317.85.16.50~23.3014.124.3757.7~32.117.75.07.30~24.3014.784.4967.7~31.717.34.93.00~14.107.902.87pHEh/mV05.68~9.827.310.69135~3902335315.25~8.187.200.62101~3772335025.01~9.237.360.81105~3712335035.10~9.527.650.98108~3682325045.23~9.867.811.08110~3682305055.29~10.207.941.13117~3772295364.78~8.927.460.94123~37323846269。0,1、2、3、4、56。·581·        26  ρ(DO)3.20~7.39mg·L-1,5.60mg·L-1,,ρ(DO)4.06mg·L-1;4,ρ(DO);,ρ(DO)14.78mg·L-1,,ρ(DO)7.90mg·L-1。pHDO,pH7.31,,pH7.20,H+,。4,CO2,CO2-HCO3--CO32-,pH[5-6]7.94。,[7],pH,pH4。,pH7.46。Eh230mV,,,。2.2 2.2.1 SS2,2ρ(SS),0.4~375.0mg·L-1,。,ρ(SS),1.0~62.0mg·L-1,SS。,ρ(SS)2.0~16.0mg·L-1,。,,SS。,ρ(SS),,ρ(SS)10mg·L-1。2009310,ρ(SS),7.4mg·L-1,,111.0mg·L-1,1a。2 、SSFig.2 SSintheinflowandoutflowoftheconstructedcomplexwetlandmodel2.2.2 CODCr2ρ(CODCr)Ⅲ(GB3838—2002)(3)。ρ(CODCr)4.1~200.0mg·L-1,GB18918—2002《》B,。,ρ(CODCr)3.2~34.8mg·L-1,。ρ(CODCr),0.8~29.7mg·L-1。,ρ(CODCr),ρ(CODCr)20mg·L-1。《》(GB18918—2002)B(60mg·L-1),《》(GB3838—2002)Ⅲ(20mg·L-1)。3 、CODCrFig.3 CODCrintheinflowandoutflowoftheconstructedcomplexwetlandmodel2.2.3 Nρ(TN)《》(GB18919—2002)B。NNO-3-N,m(NO-3-N)m(TN)·582· 6 :68.7%,ρ()(NH+4-N),m(NH+4-N)m(TN)0.13%,NO-2-N。2.2.3.1 TN4,1,0.13m3·m-2·d-1,ρ(TN)3.20~20.00mg·L-1,,ρ(TN)2.02~17.10mg·L-1,19.1%。4TN,ρ(TN)0.65~16.50mg·L-1,9.3%。,ρ(TN)0.16~10.80mg·L-1,6.92mg·L-1,16.0%,Ⅲ。《》(GB18918—2002)B(20mg·L-1),《》(GB3838—2002)Ⅲ(1.0mg·L-1)。4 、TNFig.4 TNintheinflowandoutflowoftheconstructedcomplexwetlandmodel2,0.06m3·m-2·d-1,ρ(TN)6.16~14.90mg·L-1,ρ(TN)2.50~10.10mg·L-1,37.4%。4ρ(TN)0.64~6.84mg·L-1,40.5%。,ρ(TN)0.15~0.74mg·L-1(4),18.2%,Ⅲ。TN。,,,TN[8]。N,N,N。,2,,ρ(TN)Ⅲ(4)。2.2.3.2 NO-3-N5,1,ρ(NO-3-N)2.34~14.30mg·L-1,,ρ(NO-3-N)0.35~12.40mg·L-1,19.1%。4NO-3-N,ρ(NO-3-N)0.45~9.96mg·L-1,9.2%。,ρ(NO-3-N)0.61~7.76mg·L-1,11.8%。5 、NO-3-NFig.5 NO-3-Nintheinflowandoutflowofth

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