摘要
AnumberofresearchprogramshavebeenestablishedtoevaluatepotentialapplicationsofconstructedwetlandsinWesternAustralia.Theseconstructedwetlandsareknownnotonlyfortheirnutrientremovalcapability,butalsotheirroleinhabitatcreation,urbanlandscapingandwaterqualityandenvironmentalhealth.Theyplayanimportantroleinthereductionofnutrients,particularlyphosphorous,fromenteringthewaterways.ThispaperreportsontheimprovementofwaterqualityinthePeelMainDrainbeforeitsdisposalintothePeelEstuary,Perth,WesternAustralia.Thenitrogentophosphorous(N:P)ratiowasbelowthecriticallimitduringsummer(dryspell)andthesystemwaslimitedbynitrogen.Theconcentrationofphosphoruswashighinsummerandlowinwinterduetoincreasedavailabilityofdissolvedoxygeninwinter.AwetlandwasproposedtoimprovethewaterqualityinthePeelMainDrainusingvegetationandsubstrate.Thehydrologiceffectivenesswasfoundtobe78%foradetentiontimeof30hours.Itisexpectedthatthemaximumnitrogenremovalefficiencyoftheconstructedwetlandwillbe80%withanestimatedefficiencyof40%inthefirstyearand60-80%inthesubsequentyears.Forphosphorousitisexpectedthattheconstructedwetlandwillbeeffectiveinremovingfilterablereactivephosphorous.TraditionalsedimentremediationtechniqueshavebeenfoundunsuitableforthelongtermbindingofthephosphorousthereforetheuseofPhoslockTMisrecommended.
出版日期
2005年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
