:2010-04-16:“”(2008ZX07208-003)。:(1981-),,。:。PerformanceofCircularFlowConstructedWetland(CFCW)StuffedwithNaturalCa-FormZeoliteSaturatedwithAmmoniumforSimulatedSwineWastewaterTreatment高红杰1 彭剑峰1 宋永会1 刘静1,2 叶捷1,3,4(1.中国环境科学研究院城市水环境研究室 北京 100012);(2.南京农业大学工学院 南京 210031);(3.湖南大学环境科学与工程学院 长沙 410082);(4.湖南大学环境生物与控制教育部重点实验室 长沙 410082) 针对养猪废水中有机污染物和氨氮(NH+4-N)浓度高、悬浮物含量高的特点,采用循环流人工湿地工艺对其进行处理,研究以天然钙型沸石为基质的人工湿地对模拟养猪废水的处理效能。结果表明:历时22个月的高NH+4-N负荷运行,已使人工湿地中的钙型沸石对NH+4-N的吸附达到饱和。在天然钙型沸石填料铵饱和条件下,湿地系统对模拟养猪废水中NH+4-N的处理效果仍可达61%~76%,对TN的去除率可达66%~80%,对CODCr的去除率一直维持在78%~92%之间。 Abstract Swinewastewatercontainshighconcentrationsoforganiccontaminants,ammoniumnitrogen(NH+4-N)andsuspendedsolids.Thecircularflowconstructedwetland(CFCW)stuffedwithnaturalCa-formzeolitewasemployedtotreatswinewastewateranditstreatmentefficiencywasstudied.TheresultsshowedthatnaturalCa-formzeoliteinCFCWhadbeensaturatedwithNH+4-Nduetoad-sorptionafter22monthsperformancewithhighNH+4-Nload,andundersuchcondition,theeliminationratesofthewetlandsystemforNH+4-N,TN,andCODCrremovalsstillkeptat61%~76%,66%~80%,and78%~92%,respectively.Keywords SaturatedwithAmmonium NaturalCa-FormZeolite CFCW SimulatedSwineWastewater Substrates ,、,〔1〕。,,(AmmoniumNitrogen,NH+4-N)(SuspendedSolids,SS)〔2,3〕。〔4〕,110~13。,,。1974,,、、、、、、〔5,6〕。“”〔7〕。,,〔8〕,。,,,—14— 36 6 201012DOI:10.16803/j.cnki.issn.1004-6216.2010.06.005。,,。1 1.1 :,〔9〕。:752N-();JPBJ-608();pHs-25pH()。:、;、、、。1.2 ,“”,,(circularflowconstructedwetland,CFCW)。CFCW1。1 1CFCW0.25m2,,。,、、。NH+4-N,NH+4-N800mg/L,NH+4-N2.0g/(m2·d);200L;HRT7~12d。(20~25℃)、20L/d,、、1#、3#5CODCr、NH+4-N、TN、DOpH,。1.3 ,NH+4-N22,NaCl+CaCl2NH+4-N。:,。2#,22d4#,,。,。:Na-Cl+CaCl2,NaCl∶Ca-Cl2=7∶3()。,。1.4 0.45μm,NH+4-N,CODCr、TN、pH《》〔10〕,。25%,2;25%,3,310%。2 2.1 2.1.1 曝气条件下NH+4-N浓度变化 2。2 —15— 2,NH+4-N,400mg/L,150mg/L,NH+4-N,NH+4-NNO-3-N,NH+4-N。,22。2.1.2 加入化学试剂条件下NH+4-N浓度变化3。3 3,NaCl+CaCl2,NH+4-N,NH+4-N533mg/L。NH+4-N,“”。,,。2.2 2.2.1 对NH+4-N的去除效果 NH+4-NNH+4-N4。4 4,,NH+4-N,NH+4-N600~800mg/L,NH+4-N150~260mg/L。NH+4-N,NH+4-N61%76%。,,NH+4-N20%。,,,NH+4-N;,NH+4-N,,NH+4-N,。2.2.2 对TN的去除效果 TN5。5 TN54,TNNH+4-N,66%80%。TN、、,-。,-TN。,CODDO,C,NH+4-NNO-2-NNO-3-N,,DO,,NO-2-NNO-3-NN2,TN。(34)—16— 36 6 201012-〔J〕.,2005,24(1):151-159.9.FewtrellL,MacgillSM,KayD,etal.Uncertaintiesinriskassessmentforthedeterminationofdrinkingwaterpollutantconcentrations:Cryp-tosporidiumcasestudy〔J〕.WaterResearch,2001,35(2):441-447.10.,, ,.Ⅱ.〔J〕.,2006,43(1):142-151.11.USEPA.TheIntegratedRiskInformationSystem(IRIS):Environ-mentalCriteriaandAssessmentOffice,Cincinnati,Ohio〔EB〕.2001.12.,, ,.〔J〕.,2008,29(4):862-868.13.,,,.〔J〕.,2004,24(4):711-717.14.,.〔EB〕.20021231.15.KarenHWatanabe,FrankWDesimone,ArunthavaraniThiyagarajah,etal,FishtissuequalityinthelowerMississippiRiverandhealthrisksfromfishconsumption〔J〕.TheScienceofTheTotalEnvironment,2003,302:109-126.(16)2.2.3 循环流人工湿地对CODCr的去除效果 CODCr6。6 CODCr6,CFCW,CODCr。CFCW,CODCr400mg/L,1#CODCr46%,CODCr85%。,CODCr。,NH+4-NCODCr。3 22。,,,NH+4-N、TNCODCr。,NH+4-N61%76%,TN66%80%,CODCr78%92%,。1. ,.〔J〕.,2004,19(1):49-52.2. ,, ,.〔J〕.,2007(7):1127-1134.3.SongYH,YuanP,ZhengBH,etal.Nutrientsremovalandrecoverybycrystallizationofmagnesiumammoniumphosphatefromsyntheticswinewastewater〔J〕.Chemosphere,2007,69(2):319 324.4.,,.〔M〕.:,2004.5.,.〔J〕.,2007,33(2):9-13.6.SunGZ,ZhaoYQ,AllenS.Enhancedremovaloforganicmatterandammoniacal-nitrogeninacolumnexperimentoftidalflowconstructedwetlandsystem〔J〕.Journalofbiotechnology,2005,115(2):189-197.7.,.〔J〕.,2000,19(5):301-303.8., .〔J〕.,2004,20(1):15-17.9. ,,,.〔J〕.,2009,22(11):1341-1345.10.《》.()〔M〕.:,2002.—34— 36 6 201012