复合介质人工浮岛对缓流水体NP修复研究白少元

7N、P121*1.1000492.541004、。N、P。10：11。13℃2.5d、、87.6%、63.8%、82%83.5%13℃HRT7d70.1%69.2%。X171Adoi10.3969/j.issn.1003-6504.2010.07.0011003-6504(2010)07-0001-06RemovingNitrogenandPhosphorusfromSlowMovingSurfaceWaterbyLayeredMulti-mediaConstructedFloatingIslandsBAIShao-yuan12WANGMing-yu1*1.CentreforWaterSystemSafetyandSchoolofResourceandEnvironmentGraduateUniversityChineseAcademyofSciencesBeijing100049China2.SchoolofEnvironmentalScienceandEngineeringGuilinUniversityofTechnologyGuilin541004ChinaAbstractInordertoincreaseremovalefficienciesofnitrogenandphosphorusfromcontaminatedslowmovingsurfacewateranewtypeofconstructedfloatingislandswithlayeredmulti-mediaofsubstratescalledthelayeredmulti-mediaconstructedfloatingislandLMCFIwasproposed.Pilot-scaleLMCFIexperimentsettingswereconstructedandoperatedwithdifferentconditionsincludingvarioushydraulicresidencetimesHRTgaswaterratiosandtemperatures.ItwasobservedthatthefactorssuchasHRTsgaswaterratiosandtemperatureshadconsiderablecontrolonremovalefficienciesofnitrogenandphosphorusandremovalefficiencyofLMCFIwasbetterthanthoseoftheothertraditionalconstructedfloatingislandsexamined.Gaswaterratioaround101offeredthehighestremovalefficiencywhichwasabout2timesasthatwithoutaeration.Whenwatertemperaturewasabove13℃meanremovalratesofammonianitrogennitratenitrogentotalnitrogenandtotalphosphoruswere87.6%63.8%82%and83.5%respectivelywithHRTequalto2.5dwhilemeanremovalratesofnitrogenandphosphoruswereonly70.1%and69.2%respectivelywithHRTequalto7dwhentemperaturewasbelow13℃.KeywordsconstructedfloatingislandsfieldtesteutrophicationslowmovingsurfacewaternitrogenandphosphorusremovalhydraulicresidencetimeHRTaerationtemperature。2080BESTMAN[1][2]。[3]。、、。80%10d[4-5]20%~40%[6-7]。[8]。2009－10－192010－01－13“”“”[e-mail]*[e-mail]。EnvironmentalScience&Technology33720107Vol.33No.7July201033。HRT、。11.12mL×1mW×1mH、1。3~5mm2SiO260%~65%CaO+MgO3%~5%Al2O317%~22%Fe2O35%~8%。15cm35cm20cm。4。。。36/m2。、。1.2。。2007711。NH3-N、NO3--N、TNTP。1。22.1。HRT、1Table1Statisticsofoverallinfluentconcentrationsmg/Lmean11.094.2615.351.88max14.605.9418.904.2min8.062.0011.860.9S.D.1.390.831.430.5527HRT。22~26℃HRT。NH3-N、NO3--N、TNTP11.22、4.34、15.561.73mg/L1.36、0.5、1.310.2。HRT12、24、36、48、60、72h5。5、HRT。HRTHRT72hNH3-N、NO3--N、TNTP82.4%、74.4%、80.7%87.5%。HRT、。。。、[9-12]。Fe、Al。HRT72h、、HRTNH3-Ny=1.1886x+3.68R2=0.9644NO3--Ny=0.3498x+45.393R2=0.7882TNy=0.9067x+19.187R2=0.9814TPy=1.2838x+2.4133R2=0.9531。HRTHRTNO3--NNO3--NNO3--N。HRTHRT[13]。HRT72hHRT5dHRT72hHRT。/。。2.52~3.12mg/L。4.6mg/L2mg/L2。2.2。。15.8~18.2℃HRT48h5：1、10：1、15：1、20：15。、、TNTP11.55、2.80、14.432.2mg/L6。N、P3336。7。。NH3-N46.8%16.7℃51061.5%71.7%。。1515、2086.9%85.8%。。05-1.7%33.8%。51010。[14]。y=-0.0082x2+0.0706x+0.0638R2＝0.958。1063.92%y=-0.0021x2+0.0448x+0.3795R2＝0.9715。。05TP37.5%60.9%。。TP10、152063.6%、65%66.7%。5。5~104~6mg/L。2.3。。。HRT10。HRT48h16.9℃1.3℃8。816.9℃13℃。13℃。13℃78.1%39.3%22.8%-8.3%61.1%28.8%。。。13℃13℃13℃47HRT2。2HRT、。HRT5d5d、6d7d98.4%、100%100%。13℃HRT2.5d87.6%。13℃HRT。15℃[15]。13℃HRT。HRT2.5d63.8%。13℃HRT7d70.1%13℃HRTHRT2.5d82.0%。13℃、HRT7d69.2%13℃HRT2.5d83.5%。13℃。213℃HRTTable2Removalratesvs.HRTsforwatertemperaturesbelowandabove13℃13℃(1~12℃)13℃(13~26℃)HRT(d)1d2d3d4d5d6d7d1.5d2d2.5dNH3-N(%)45.551.172.084.498.410010081.782.587.6(%)-8.3-9.3-53.7-32.6-22.1-9.31.75.844.363.8vTN(%)31.535.439.354.759.863.970.163.973.582.0TP(%)34.642.350.053.861.565.469.266.272.583.53。。。213℃HRT2.5dTN82.0%。Al、FeCa[16-17]。3.1~4.2m2/g。2。No.1No.2No.3。TNTP9。20%。、、、、。。12~72h。。、。N、P5334。N、P。、HRT、。N、PHRT10：11。13℃13℃、1~13℃5d。[][1]SHoeger.Artificialfloatingisland[J].JournalofSoilandWaterConservation198843425-27.[2]StewartFrankMMulholland.Floatingislandsasanalter－nativetoconstructedwetlandsfortreatmentofexcessnutrientsfromagriculturalandmunicipalwastes-resultsoflaborato－ry-scaletests[J].LandContamination&Reclamation200816125-339.[3]StottmeisterAWieβnerPKuschketal.Effectsofplantsandmicroorganismsinconstructedwetlandsforwastewatertreatment[J].BiotechnologyAdvances20032293-117.[4].、[J].200516112199-2203.ZhouXiao-pingWangJian-guoXueLi-hongetal.NandPremovalcharactersofeutrophicwaterbodyunderplantedfloatingbed[J].ChineseJournalofAppliedEcology200516112199-2203inChinese[5]MiaoLiYue-JinWuZeng-LiangYu.Nitrogenremovalfromeutrophicwaterbyfloating-bedgrownwaterspinachIpomoeaaquaticaForsk.withionimplantation[J].WaterResearch2007413152-3158.[6].[J].20067823-26.ZhengChongSunMeiZhengShao-kuietal.Laborato－ry-scalecontinuouspurificationofammonia-typeeutrophicwaterbodybyOenanthedecumbensonfloating-bedsatalowwatertemperature[J].TechniquesandEquipmentforEnvi－ronmentalPollutionControl20067823-26.inChinese[7].-[J].2006342119-122.YanYi-xinCaoJia-shunLiYu-ru.Dynamicpilotstudyonpurificationofheavilypollutedriverwaterwithfloatingbedtechnologyinwinter-spring[J].JournalofHohaiUniver－sityNaturalScience2006342119-122.inChinese[8]LennardWilsonLeonardetal.Acomparisonofthreedifferenthydroponicsub-systemsgravelbedfloatingandnutrientfilmtechniqueinanAquaponicTestSystem[J].AquacultureInternational2006146539-550.[9]ChristosSAkratosVassiliosATsihrintzis.Effectof