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1、acteristicsofodpollutionnearlfillsiteLUPeng1YUChangkang1WANGGuiqin1DAIZhifeng1CHENWei1RENLimei2BeijingChina(1.BeijingenvironmentalsanitationengineeringresearchinstituteBeijingChina100028；2.MSWlfillofChaoYangDistrictBeiji

2、ngChina100018)emailaddress:lupeng531@Abstract—Odreleasedfromlfillisoneseriouspointsourcesofairpollutioninurbanplacethatdamagesthesurroundingenvironmentinjurespeople’shealthinducesvillagersangrilyisnoteasytoberesolved.Sam

3、plingpointsnearlfillits’ambientvillageswereedatdifferentdirectionfromthecentraloflfillsite.Duringoneweekobservationperiododconcentrationammoniasulfidehydrogenarecheckedatdifferenttimeeveryday.Theresultsshowtheodconcentra

4、tionhasvibratefluctuationbetweendaynightduringobservationperiod.Neithersulfidehydrogenammoniaconcentrationhasremarkablerelationshipwithodconcentrations.Odpollutionisseriousinnightthanthatofindaytimeatlfillarea.Odprotecti

5、ondistancefromlfillboundaryshouldbemethan500mbyanalyzingthereductionregularofodconcentrationintheresearch.KeywdslfilloddiffusionregularI.INTRODUCTIONLargescaleindustrialenterprisesmoveoutofBeijingAdministrativeRegiontoac

6、hievethecityplanningconstruction.Sanitationfacilitiesfarawayfromthecenterofthecityaresurroundedbyresidentialareanow.Its’negativeinfluenceoncityairenvironmentbecamemeseriouslywastakenextremelyconcernedbymunicipalgovernmen

7、t.Odpollutionalloccurineverystepsofmunicipalsolidwaste(MSW)treatmentprocesssuchascollectiontransptationfinaldisposal.Muchodousmaterialsareincompletedecompositionproductsthatproducedinanaerobicconditions.Thesematerialsinc

8、ludingalotofsulfurnitrogenbasedcompoundslikethiolssulfidesaminesmuchofithastoxicacterization[13].InChinamethan90%ofmunicipalsolidwaste(MSW)wastakentosanitarylfill.Atthatplaceodpollutionotherseriouslyenvironmentproblemocc

9、urred.Inlfillareatheintensityofodpollutionhassignificantseasonalvariationthecompositiontheunpleasantsmellmaterialswereanalyzedbyscholars[46].Butthedynamicofodpollutionchangesduring24hoursofadaywasrarelyrepted.Odprotectio

10、ndistanceoflfillareagenerallyaccdingtopracticalexperiencebecauseitspollutioninfluencedistancefromlfillboundarywasnotveryclear.Theresearchwastodetectthepollutionchangingregularofwholedaytheinfluenceddistancefromlfillbound

11、arytoambientarea.II.MATERIALSMETHODSA.TestingsitesAlargeofmunicipalsolidwastesanitarylfillwasedattheeastofBeijingwhichincludeonefirstphaseburyareaonesecondphaseburyareacovered30hm216.5hm2respectively.TheMSWpillismountedt

12、o40metersindesigneditcanaccept2000tonsofgarbageperdaycontinuallyf17yearscontain12millionm3MSWduringlifetime.Severalvillagesatdifferentdirectionsnearedthelfill(Fig.1)wereedinthescopeof600metersdistancefromlfillboundary.Ac

13、cdingtothemainwinddirectionwasnthwestduringtestingperiodtestingresultsatopenspacenearXiaotuncunvillagewereusedasbackgroundvalues.ThecenterofvillageAisabout476metersfromtheeastboundaryoflfill.ThecenterofvillageBisabout500

14、metersfromthesouthboundaryoflfill.VillageCisonthenthdirectionoflfill.BecausevillageAvillageBisonthedownwinddirection5testingpointsareedontheoddispersiondirectionatdifferentdistancenearthevillages.Point1isontheboundaryoth

15、erfourmonitingsitesareedaccdingtoitsrelativepositionfromlfillcentertothevillage.Hereincludesthesitebetweenthevillagelfill(point2)thesiteinfrontofthevillagetolfill(point3)thesiteinthecenterofvillage(point4)thesitebehindth

16、evillage(point5thefurthestpositiontolfillsite).B.AnalyzingmethodAirsamplesateverypointwerecollectedrespectivelyfromNovember24toDismember1of2006.Samplescollectedthreetimesinonedaythatat4:00am12:00am10:00pmrespectively.The

17、wholemonitingperiodprolongto7days(172hours).Crespondingauth:dzfcas@Spons:KeyLabatyfSolidWasteManagementEnvironmentSafetyMinistryofEducationofChinaTsinghuaUniversity100084BeijingChinaNo.SWMES200912Fig.4fluctuationofodconc

18、entrationonlfillboundarytemperatureduringtestingperiodBystatisticalanalyzingtherehaveremarkablerelations(P0.012trailtest)betweenodconcentrationsonthelfillboundaryindifferentdirections.Buttherehavenoremarkablerelationship

19、betweentheairpressureodconcentrationneithertheairtemperature.Thewindvelocityhassomeeffectonodconcentrationfthelowerodconcentrationalwaysappearedatthetimethathigherwindvelocityoccurred.Buttherehavenotremarkablerelationshi

20、pbetweenwindvelocityodconcentrationbystatisticalanalyzing.Therehavetwoacteristicsaboutodconcentrationchangingduringtheobservationperiod.FirstlyodconcentrationshavesimilarlyfluctuatingtrendindifferenttestingpointsSecondly

21、remarkablerelationshipbetweenodconcentrationsonthelfillboundaryindifferentdirectionsatthesametime.Accdingtothetwoacteristicsdataofodconcentrationatlfillboundarywerepickeduptoanalyzingthedynamicofodpollutionintensityofwho

22、leday(24hoursofaday).Themeanodconcentrationchangingonlfillboundaryshowthatthelowestvaluesalwaysappearedat12aminthedaytimethehighestvaluegenerallyappearedat4amintheevening.Thetrendofodconcentrationchangingwasreversedtotha

23、tofairtemperatureduringwholemonitingperiod.Theodconcentrationcurveshowvibratechangingregularthatwasassameasthefeelingoftheresidentswholivinginthevillageduringtheobservationperiod.Itisshowthatodpollutioninnightwasseriousl

24、ythaninthedaytimenearlfillarea(Fig.4).IV.DISCUSSIONSA.DistanceofodpollutioninfluenceBystatisticalanalyzingodconcentration(Table1)its’stardvariationdecreasedwiththedistanceincreasing.Thesephenomenainferredthatthepollutedi

25、ntensitywasgetdownduringoddispersiontheodconcentrationdifferencebetweendaytimeatnighttimedecreasedtoo.Therehaveremarkablerelationshipofodconcentrationbetweenlfillboundaryothersitesindifferentdiffusiondirectionsthatneared

26、villageAnearedvillageBrespectively(table1).Protecteddistancefromlfilltoambientareaisveryimptantinodpollutionresearch.InChina500metersprotectdistancewasprovidedatdownwinddirectionfromlfillsiteinanoldenvironmentprotectiond

27、emonlfillsiteion[412].Thenewstardfpollutioncontrolonthelfillsiteofmunicipalsolidwaste(GB168892008)changethe“500metersdownwind”to“byenvironmentevapation”[13].Somescholarsuggestingtheprotectiondistanceisbetween500metersto8

28、00metersaroundsmallscalelfillsite800metersto1000metersarounddlescalelfillsite1000metersto1500metersaroundlargescalelfillsite[14].B.TheinfluenceofammoniasulfuretedhydrogenonodpollutionTherehasnorelationshipbetweentheconce

29、ntrationofammoniaodconcentration.theammoniaconcentrationhasnoregularvibrationlikethechangeofodconcentrationin24hoursoftheday.Thelowestvalueappearedatthetestingpointbetweenvillagelfillsite(point2)highestvalueappearedatthe

30、siteTable1DeivestatisticsofodousairconcentrationofdifferentdistancesamplingpointsnearlfillareaPointNo.Samplingsitedistancefromlfillboundary(m)MeanvaluedimensionlessStd.DeviationSamplecontentNCrelationscoefficientbetweenp

31、ointonlfillboundaryothertestingsitesA1Eastboundary020.2710.4822A2Betweenlfillvillage23817.056.81220.910A3Befevillage47613.004.39220.746A4Inthevillage50610.321.49220.101A5Behindvillage53610.000.0022B1Southboundary019.598.

32、2722B2Betweenlfillvillage25016.095.74220.764B3Befevillage50014.234.17220.491B4Inthevillage55011.822.79220.430B5Behindvillage60010.591.40220.539crelationremarkable(0.01level2trail)crelationremarkable(0.05level2trail)10010

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