摘要
Plentyofinorganicnitrogeninwastewatercancausetheeutrophicationinwaterbodies,soitisanimportanttasktoremovenitrogen.Purificationrolewasrealizedbyabsorption,filtration,depositon,evaporation,nitrificationanddenitrificationofmicrobes.AlthoughthestudiesofPhragmitesaustrilisbedintheconstructedwetlandarepopular,thepurificationperformancesofconstructedwetlandfilledbysaline-alkalisoilsubstratearelessreported.Inthepaper,thepurificationefficiencyofnitrogenwithPhragmitesaustrilisbedintheconstructedwetlandfilledbysaline-alkalisoilsubstratewasdiscussedthroughasimulationstudy.Resultstodateindicatedthatthefirstorderplugflowmodelwasadequatetodescribethenitrogenremoval.TheexperimentshowedthatthediminishingconcentrationofTN,NO2-N,NO3-N,NH4-Nwerecloselyrelatedtohydrologicalretentiontime(HRT),thecorrelationcoefficientwasRe=0.98499,R2=0.9911,R2=0.89407andR2=0.95459,respectively.Accordingtothedata,themostsuitablehydrologicalretentiontime(HRT)forthiskindofconstructedwetlandshouldbedeterminedto4days.Inaddition,theexperimentshowedthepurificationefficiencyofnitrogenhasverybroadrangeanddrasticvibration,TN(17%-79%),NO2-N(33%-98%),NO3-N(13%-93%),NH4-N(28%-64%).Thestudywillpromotewetland'sdesignandoperationproceduresinlargesaline-alkalinesoilareas.
出版日期
2004年04月14日（中国期刊网平台首次上网日期，不代表论文的发表时间）
