不同回流比对无植物垂直流人工湿地除氮效果的影响崔理华

3　7环境工程学报Vol.3,No.720097ChineseJournalofEnvironmentalEngineeringJul.2009崔理华1,2,3　郑离妮1　楼　倩1　陈　茵1　朱文玲1(1.,510642;2.,510642;3.,510642)　　,。,TN,NH+4-N,200%,150%,100%。TN,150%200%。　　　　　X703.1　　　A　　　1673-9108(2009)07-1170-05EffectofdifferentrecirculationratiosonremovalefficiencyofnitrogeninunplantedverticalflowconstructedwetlandsCuiLihua1,2,3　ZhengLini1　LouQian1　ChenYin1　ZhuWenling1(1.DepartmentofEnvironmentalScienceandEngineering,CollegeofNaturalResourcesandEnvironment,SouthChinaAgriculturalUniversity,Guangzhou510642,China;2.KeyLaboratoryofEcologicalAgricultureofMinistryofAgricultureofthePeople'sRepublicofChina,SouthChinaAgriculturalUniversity,Guangzhou510642,China;3.KeyLaboratoryofAgroecologyandRuralEnvironmentofGuangdongRegularHigherEducationInstitutions,Guangzhou510642,China)Abstract　Experimentofthepreanoxicprocessforbiologicalnitrogenremovalwascarriedouttostudytheperformanceandhowtheeffectofdifferentrecirculationratiosontheremovalefficiencyofnitrogeninverticalflowconstructedwetland.TheresultsofthisexperimentshowedthattheremovalefficiencyofTNimprovedwiththeincreaseofrecirculationratio.TheremovalofefficiencyofNH+4-Ndecreasedwiththeincreaseofrecircula-tionatlowratios,butincreasedwiththeincreaseofrecirculationathighratios.Thesumoftheremovalefficien-ciesofTNandNH+4-Nofdifferentrecirculationratiosshowedthat200%recirculationratiowasthehighest,fol-lowedby150%recirculationratio,and100%recirculationratiowasthelowest.Ifonlyaccountedfortheremov-alefficiencyofTN,150%recirculationratiowasbetterthanthatof200%recirculationratio.Keywords　verticalflow;constructedwetland;nitrogenremoval;recirculationratio:(40871110,30828005,40571074);(:2006168402);(2008A080800028):2008-09-21;:2008-10-26:(1963～),,,,。E-mail:[e-mail]　　、、、、[1]。,[2],[3],[4][5,6],,,、[7]。-(A/O),。,,N2N2O,。、[8]。,,,7:-,。,,,。,A/O,。1　1.1　1.1.1　试验流程1。1　Fig.1　Experimentalflowchartofsimulatedverticalflowconstructedwetland1.1.2　试验设计91.2m7.5cmPVC,185L9。9,3L,9PVC,10cm,100cm,10cm。(SAS)、(CAS)(BAS)3,3。。9。,1L,150mL2L,20min,(DO0.2～0.5mg/L),(BOD),150mL。,。1.1.3　回流比和回流次数,,50%、100%、150%200%4,10、20、3040,50%、100%、150%200%。0%。1.1.4　流量和水力停留时间3L/d,68cm/d,0.50,HRT=S×H×ε/Q=0.88d。1.2　。,2001320035TN、TP、BOD5COD,1。1.3　NH+4-N:(GB7478);NO-3-N:-(,1981);TN:-(,1998)。2　2.1　NH+4-N4,0%,4,NH+4-N2。(3),NH+4-N,NH+4-N81.21%,64.28%～58.11%。,1　Table1　Characteristicsofsewageforexperiments(mg/L)1(2001.3～2002.3)(mg/L)2(2002.4～2003.5)(mg/L)COD107.07～316.8218.8(20.75)92.65～276.9171.2(15.67)BOD535.19～114.469.77(7.91)41.60～139.275.94(7.54)NH+4-N39.73～170.8101.3(11.70)30.08～192.383.82(10.77)TN25.80～211.3114.7(18.55)21.22～181.387.97(10.14)TP3.30～17.778.47(1.21)3.23～13.257.28(0.63)　　:16,117132　NH+4-NTable2　Effectofdifferentrecirculationratiosonremovalefficiencyofammonianitrogen(%)0%50%100%150%200%119.1788.67±3.70a33.66±13.65c43.53±1.40c47.25±2.84bc60.19±10.75b1119.1761.01±2.67ab42.23±11.60c49.36±6.07bc52.27±5.19bc72.33±6.60a119.1798.22±0.74a97.90±1.22a78.97±5.99b74.60±6.59bc67.88±3.47c101.9674.23±12.87a58.63±0.82b37.83±0.82c40.19±2.96c44.45±2.17c2101.9677.54±1.64a48.70±8.19bc41.13±0.00c51.07±6.18b51.54±0.82b101.9681.80±4.23a81.32±3.57a77.07±4.33a61.94±2.96b56.74±7.09b78.1079.01±4.66a74.70±2.83ab70.37±4.90b69.76±2.83b70.38±3.21b378.1088.89±1.85a64.82±4.90bc69.13±8.55b57.41±6.42c56.80±6.51c78.1081.48±1.85a76.55±1.07ab73.46±1.07ab68.56±9.82b72.22±1.85b　　:(1)3,;(2)Duncan,(P=0.05)3　NH+4-NTable3　MultiplecomparisonofammonianitrogenremovalbydifferentrecirculationratiosNH+4-N(mg/L)119.7101.9678.10SASCASBAS(%)050100150200(%)64.54b58.94c71.57a59.52b58.95b76.58a81.21a64.28b60.09b58.11b61.39b4545454545452727272727NH+4-N,NH+4-N。NH+4-NNH+4-N,NH+4-NNH+4-N,NH+4-NNH+4-N(P0.01)。SAS、CASBAS3NH+4-N59.52%、58.95%76.58%,NH+4-N(P0.01)。2.2　NO-3-N4NO-3-N4。(5),,A/O,,NO-3-N。0%、50%、100%、150%200%NO-3-N73.00、35.83、23.78、16.6920.06mg/L,NO-3-N(P0.01)。(NH+4-NTN)NO-3-N(P0.05)。SAS、CASBAS3NO-3-N42.39、23.2835.96mg/L,NO-3-N(P0.01)。2.3　TN4TN6。(7),,,TN。0%、50%、100%、150%200%TN39.53%、55.42%、54.02%、66.37%64.17%,TN(P0.01)。TNTN。TN114.58、134.30112.53mg/L,TN67.79%、55.46%44.46%,TNTN(P0.01)。SAS、CASBAS3TN46.83%、58.32%62.56%,TN(P0.01)。11727:4　NO-3-NTable4　Concentrationofnitratenitrogenintreatedeffluentbydifferentrecirculationratios(mg/L)0%50%100%150%200%0.5898.73±35.88a58.43±8.16b6.37±3.01c20.06±29.30bc26.22±8.38bc10.5815.43±11.37a6.55±6.85a2.12±0.89a21.60±35.91a33.65±18.67a0.58131.1±66.69a38.76±31.07b24.82±20.54b16.59±12.94b7.42±3.93b3.6193.76±22.21a20.59±2.91b1.20±0.84c2.60±1.01bc12.00±6.35bc23.6183.45±10.71a16.63±17.51b0.43±0.29b3.71±4.00b9.36±1.43b3.6180.75±20.81a21.93±3.01b16.15±6.02b16.24±11.08b21.65±13.51b8.6759.77±7.97ab82.92±6.52a76.65±28.45a41.94±25.71b34.53±3.63b38.6753.51±8.05a34.71±1.44b39.05±2.51b13.49±8.23c15.43±4.18c8.6740.49±17.77ab41.95±16.30ab47.24±9.19a14.01±7.33c20.25±0.00bc　　:(1)3,;(2)Duncan,(P=0.05)5　NO-3-NTable5　MultiplecomparisonofconcentrationofnitratenitrogenintreatedeffluentbydifferentrecirculationratiosNH+4-N(mg/L)119.7101.9678.10SASCASBAS(%)050100150200(mg/L)33.86ab26.70b41.06a42.39a23.28b35.96a73.00a35.83b23.78bc16.69c20.06c454545