暴雨情况下传输型植被浅沟的净化效果研究李海燕魏鹏黄延张悦

11211．1000442．100048LID。。SS、COD、TPNH+4－NNO－3－N＞SS＞COD＞NH+4－N＞TP。TU992C1000－4602201401－0099－05ＲesearchofPurificationEffectofConveyanceSwaleunderHeavyＲainLIHai-yan1WEIPeng1HUANGYan2ZHANGYue11．KeyLaboratoryofUrbanStormwaterSystemandWaterEnvironment＜MinistryofEducation＞BeijingUniversityofCivilEngineeringandArchitectureBeijing100044China2．BeijingMunicipalEnvironmentalMonitoringCenterBeijing100048ChinaAbstractAsoneofthedistributedsourcepollutioncontrolmeasuresofLIDtechnologythecon-veyanceswalehasbeenmoreandmorewidelyused．TakingthegrassedswaleintheNiushanParkofShenzhenGuangmingNewDistrictasanexampletheremovalefficiencyofpollutantsinthegrassedswaleanditsstabilityunderheavyrainwereinvestigatedandthereductioneffectofthepeakrunoffwasalsoanalyzed．TheresultsindicatedthatconveyanceswalehaddifferentpollutionloadreductioneffectunderheavyrainswithdifferentpeakintensitiesandtheSSCODTPandNH+4－Nintherunoffcouldbeeffectivelyremoved．ThestabilityoftheremovalratewasNO－3－N＞SS＞COD＞NH+4－N＞TP．Keywordsgrassedswaleheavyrainpollutionloadstability2006B19PHＲ2011061242014PXM2014－014210－000006LID1～3。、、、LID。、、SSCOD。2/34cm。·99·30120141CHINAWATEＲ＆WASTEWATEＲVol．30No．1Jan．2014。。123℃1340mm1996．5mm144d9d2．2d344mm2382mm777mm。4—980%。20127211d、170mm、237min24h2012837d、148mm、270min24h。。1。1Fig．1LayoutstructureofstormwaterdrainagesysteminNiushanParkA、BA201272132m、1．15m、0．34m、2%、15mm/hB8346m、1．11m、0．30m、1%、6mm/h。0．5m90°。22.15min、。SSCODTP。24h。2.2①1。Q=ΨqF1Ψ———0．85q———F———。24。Q=0．0142×d/102．52Q———d———②EPA4、、。N、P。=∑CQ－CQ∑CQ3C———C———Q———·001·301．watergasheat．comQ———G4。G=∑CQ－CQL4L———33.1。。721832。2Fig．2Pavementrunoffvolumecomparedwithswaleoutflow2。72178mm/h10%。83B6min721B。BA。3.231。1Tab．1Pollutionloadremovalrateofgrassedswaleindifferentperiods%SSNO－3－NCODTP7212229—223419．625．77．628．118．12234—22447．751．5－2．340．310．52244—230432．269．1－7．040．847．02304—233433．258．3－73．8－29．154．2831350—1355－15．650．731．748．057．01355—14007．210．5－6．56．966．31400—14055．8－5．5－37．2－3．3－72．61405—1410－11．9－7．3－7．535．7－58．9721SS2229—2234SSSS。2。。。·101·．watergasheat．com3012Tab．2TotalremovalofpollutantsbyswaleandremovalofpollutantsbyunitlengthofswaleSSNH+4－NNO－3－NCODTP721/mg2．62×105147221581．63×105622/mg2．13×10565723341．12×105440/%18．755．4－8．231．329．3/mg·m－1153326．0－5．516125．783/mg2．81×105276548441．09×1052913/mg2．75×105234351058．49×1041510/%2．215．3－5．422．148．2/mg·m－11319．1－5．653031/%10．535．4－6．826．738．8。。SS、SS＜40mg/L。721SS33%117L/min104L/minSS。83SSSS312mg/L。SS。CODCOD。COD。721CODCOD。721ACOD83BCODBCOD。、、。A721B。83721B。83。NO－3－NNH+4－N。6%5NO－3－NNO－3－N。10min。NO－3－NNO－3－N。721A83BB·201·301．watergasheat．com。B。3.33。。3Fig．3Pollutantremovalrateboxdiagramineachperiodoftworainfallevents35NO－3－N、SS、COD、NH+4－NTP617～54mm。TPCOD。SS。、、。4。SS、、COD、10．5%、35．4%、26．7%38．8%。。NO－3－N、SS、COD、NH+4－N、TP。NO－3－N、。1．LIDJ．2011272013－16．2．J．200823334－339．3．J．2013291211－13．4．J．2010656－5779．5．D．2009．6．J．200933156－60．1975－2010。[e-mail]2013－07－13·301·．watergasheat．com301