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《人工濕地處理污染河水現(xiàn)場中試的研究》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在學術(shù)論文-天天文庫。
1、AbstraetStudyontreatmentofpollutedriverwaterfromXinyiRiverusingpilot．scaleConstructedWetland(CW)wasperformed．Thisriverisaflooddischargefiverwithgreatvariationsofwaterquantityandquality．ThefeasibilityofusingCWtotreatthepollutedriverwasdemonstrated．Theeffluentwaterqualityandremovalefficiencyofdifferen
2、tCWsystemsatdifferenttimeperiods，differentretentiontimes，differentpollutantloads，anddifferentaquaticplantswerecompared．’Fhemainresultsshowthat：(1)CWhasgoodefficienciestoimprovethewaterqualityofpollutedXinyiRiverandtheeffluentsreachthetargetedwaterquality．Itisapracticalmeasureforpollutedriverwatertre
3、atment．(2)AmongtheselectedplantsintheCWs，Typhalat扣z婦，Scirpustocustris，CannaglaucaandLythrumsalicaria,theformerthreecanresistinundation，(3)WhentheinfluentconcentrationsofCODMn，NH4+-Nandcolouritywere3．11～117．28mg／L，1，30-24．71mg／Land45-600，theirmeanremovalrateswere59．90％，85，50％and65．00％ofSSFW,77，82％，86
4、．988％and77．50％ofIVFW．TheefficiencyofpollutantremovalofIVFWisbetterthanthatofSSFW．(4)Exceptthefirststageofexperiment，theremovalefficienciesofCO'DMnandNH4+-NofSSFWandIVFWwerethehighestduringApriltoJune．DuringOctobertoDecember,theremovalefficienciesofbothsystemswererelativelylow．(5)IVFWsystemhasbetterr
5、esistancetopollutantimpactloadthanSSFWsystem．TheoptimalpollutantloadofCODMnforbothsystemsis8-12g／m2．d．Whenitistoolowortoohigh，theremovalratedecreases．(6)ThebestretentiontimesofCODMDandNH4+-NofSSFWare2and2．5daysrespectively,and1．5and2daysforIVFWsystemrespectively．(7)Thesystemscanbekeptatstabletempera
6、tureandhavestrongreaerationability．ThepHofinfluentis6．4-8．0，whichisagoodconditionfornitrogenremovalinCW．(8)FourtypesofSFWwithdifferentaqumicplantshavedifferentremovalratesofCODMn，NH4+-Nandcolourity．IntennsofCODMn，rypha[at‘if08ahasthebestremovalefficiency,andthenCannag&uca，Scirpuslocustr曲，andLythrums
7、alicaria(pollutantremovalefficienciesfromhightolow)．ForNH4+N，Cannaglaucaisthebestone，andthenLythrumsalicaria，Typhalatifolia，Scirpuslocustris．Whileforcolourity,Cannaglaucaisthebestone，andthenTyphalat弘l
