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<br /> mi'RI Ilkm"rim
<br /> During 11x11 perfunuaucc Icsls were conducted on a pilot scale biofiller at a site impacted with hinfrhralion rwix:mes arc typically mon-halugcnaled and oxygenated aroncirics suk h a5 alkanes,alcohols,
<br /> gasoline-derived hydn+c'arMms fills paper presents cxprriuensal results during the lung-lens operation of die aldehyde kelones and petrf+lcum distillates.
<br /> bakiller ailing with design alid princss infnlnalionthe.pitol scale bildiltcr is evaluated for remuvad of
<br /> volatile organic comp+unds IVII('s)and soled ufgauir that are conruonly hmud in gasidate. I PILOT SCALr RI0Fll.Tka
<br /> InhonuaUun derived from the pilin scale hkdillcr will be uu',I d,Jcsign a cost-effective bit,f11 alion prcl[ess(l) 4 the pilt*Neale hioflter project began in Nowunher 11.1,02 and is a Is.mmplb research project cnfmldcd
<br /> cnmimte to Cotard Vf N'emissions during tile later stages nt rcrilediatiim when VOU calMintl:Ifo'at teir by Rnhwn and Caldwell and ARI I1 Prsducls f'umpany, 'I lie purpose fur the research proicci is to ikvelop
<br /> luwcnt prior. nccecsary information to Ili delemhine if the hinfiltraliin technology can he successfully used to ural
<br /> airborne VM's ac part of«mediauom systems as gamolinc-affected sites,(2)identify lite stagers)of
<br /> hook;BIIIF'IL rRATION PNriCi(Sti remediationn,where hiofilrraulxl is a practical mcllrld lir controlling V(X.'s,and 1 it develop design parameters
<br /> Itiofilualiun is:in air p 11111fion control technology that ttilires a hiolugically active media lu tcnwve for full scale Iq+eralam. '11kir hinfilter is installed al a site in central Califotma where moil Zapr extraction has
<br /> vapr poor hilgl4gr1dahle Voll'},rotors,and other Inxic comlpimluls. Microorganisms ill Ate biofiller media been crmducled Tor npproxitnately 2 years.
<br /> hiolugically oxidize[tic air polutmis into calbin diuxhic aal water. In hiofil(ration,:ul untreated air slreiuu is
<br /> Passed through eilher one or more keds of hiuhigicWIy active media. 'Ile primary purpnc of the media is to A soil vapor exuarliun and Irealmcal system(SVI:fS)Currently op•raling at lite site cirosisls of moil
<br /> prrrvide a sntlacc arra ter rnicluhi,d nuachmcul. -Clic Allis alS1I snakes available nutrients for the vapor extraction wells,a vacuurn blower unit,and a catalylic Oxidizer. I be catalytic uxiducf i5 milired as
<br /> nlicrixlrgaaliSaIS;Ind;dlowc the relative easy pass igc ill ail Ihruuglt[tic ancilla. tine final air pnllutlm COMM system lu ensure Ale p+emtitcd VOC discharge limits are Ina exceeded.As slim wit
<br /> In Figure 1,Idle SVIA S wac MROMled with IIx biufiller sir that a slip-stream of extracted.,it vapr cam be
<br /> llll,llllfatiiill Lit"he Cl nsidrred as a lined Bort reactor that ploviirc's a Iargc contact area between gas treated in the hinfilkr system.After treatment in the hinlihcr,the soil vaprc is Ilan roiled ro lite catalylic
<br /> stream and uueri>urga ilisols. 'I hese micn+hi:d populalions exist in the media and water Blob enviromnclil.As oxidiser for final treatment.'Ilius,sill V(R's in Ale cxlracicd soil vapr and hiofiller edlluenl are treated in Ae
<br /> Vt HC Lonlpoand,pass Ihnuugh the nlcdia the VIM'N;tic ah,u,nctud unto the water Hill in the medial DIICC catalytic oxidizer prior to discharge to the amebicnt air
<br /> alhsorhed,lire VII('no CCII1Cs dillusc throngs the water film and conlacl Ale nucn+hial pupuL'tious where
<br /> hiological oxiiLoma i,ccurs. 'rhe pilo scale hinfrller system consists of a humidifying vessel with an electric water heater,flow
<br /> measuring pilin lubes,IhemnoLOuplec,vacuum gauges and a hiofiller vesxel that contains approximately 13
<br /> I he key asrxrt+4f hiufiltraton is providing:111 UfgalnL InL'dha that can suslaia the.%p cCific cubic feel of media. the media material win mixed with water tit appruximalely%%nwismre content, 111C
<br /> nliao,rganisms Ghat will hiolugically oxidize VIa's,olnr cnmpluMS or toxic compounds. ht the hiuliher,Ale hiofiller vessel is a closed vessel 3.S feel in dianetcf and 7 feel tall wM an internal sprinkling symem that
<br /> "'garlic media PT-141et The lnlcro,irgarlisia.,primary roorl snurccs and sn'ondary foaxl sol rocs,such as VIX's serves as art auxiliary nnoistoriring system. 1 be Internal sprinkler system of crales on a timer that alai
<br /> hall have been removed Infill Ale inl(naed air, lints,thl'raednr plovllles all elvifonmeal where pmvidim small quantities of fertilizer to lite trip of the redia. 'Ilio uutrealed air enders.the nlcdia burn the
<br /> olicroagaaiisms call wilec tvah rhe urgauic media and Vi 1I's as energy snurccs fur memlx,tislo 'Verdure. I isatin,and exits the hinfiler vessel at Ate hip, sprinkler water is provided to Ale lop of the hiofdsrr vessel;
<br /> Iypicad hiofi act media cuntaius orp.alot WINFl114'l1IN that ale high in surface area.such as peal,cunlposlcd water and nutrients flow countercurrent In the air[low.
<br /> reluse.Lfnnposred solus.leaves 111,1 onccr ulganic cuulpwuuds.
<br /> Prior to tonshucrion of the hiufoler,IaNwalry henc'h-hop tests were amducled w llelenume the
<br /> In alder to opliuuze hwilivird uxid:lli"nl within the hioliliur media,ruirnxlrganismu reyuir•it swlahle pneumaliC atht Ilydran ic carvicil4e.,of Ale hiollher media. !luring she hench-top testing,varum%media
<br /> cuvintnment the pnm;uy tactor for pmuroting hluingical uxuL aor is le lung Icon!"I;uracnance Of"cilia catnghsiliims were evaluated and the billowing cnlrrelationx were determined: media eonprsisi"u and_vapr
<br /> m"imure. Secondary Calcars bur pronulling hioklgiidl nxtdauial are elevated nlcdia lculrheiarures where pressure,vacuum pressure and volumetric low rate,vacuum pressure and niedia nrhislure corneal-Also during
<br /> hiOlogicad aclivioy is piouluted and nminldining pal al appropnasc Irvcls since Ale pxlssagc of air through the bench-nxp resting,pli and nutrient availability tcsls were conduced int dilfucm media c4.111flouliims_
<br /> nlcdia should d+e consider(across the hcd,hulking agents ave Olden mtized is wall the Mubiher media lu
<br /> c-halicia le Clalnlcimp lir prefencd;lir passageways Rased an belch-top Icsls,the following crallp+siliun was used for the bi(Ifilter nlcdia
<br /> sol(:Cl:.titiFl11.R1Oh'l1:fI:N AFTLICA'I'PONS Csandhail 7,volume tdrv)
<br /> lite applrcalion of hulillum I'nr odor control wan ural used successfully is Futofw.New Zealand.and
<br /> Wall. Ihese lirsl hiulihers were designed Ili control IPLIMMiS air streams as wassewaler tcauoenl facilities, Rack [Pine) 28 '
<br /> rendering plains,and eoulpk,00n orxranom During the 19NIN,iniltal bench-sc:dr hwfilualion systetus were Peal 26 1
<br /> devehipxd m vviduanc the 1,vasihiht y'of hiolihers to remove various V(X's froul conlaruioaled gas suvains Vo rnrKKled waste wider solids Ili
<br /> Since Alen.bioliloaoun lids hent shown to he tedulically leasihle for cenaia air emission control applicalious (oyster Shell lime 2
<br /> and has die p,lenllal In he ee0000uadly advaulagrous whel c'umpared lu current estiblisbcd Vol'coumor Spent activated Cartrol 34
<br /> leclill[Ilogy, t.2,1,4,5,6
<br /> In,kkhilkm,the hinfrller media was dm)culated with a cunlaminanl-spenfic havirium(Raotlus subtilis)at
<br /> Rudillrati6n.In Claw.has Inco slow"Io he the must successful with low molecular weighs rurnpl lauds approxilinately I pound per 5 cubic feel media
<br /> that ate highly soluble ill water '1 lc correlation ricdwcen sOluhilisy and ClIeclive reulnval in biubillera is
<br /> cxpcLfed since The volasifc cnnlpc>unds are lrulsiencd(ruin de vapor phase into like water lllm where bio- The efrrlaminants al the remedialiron lite are gasoline-derived chemicals dial have undergone
<br /> oxidoltion plo,c'csses can odor h follows Thal logldy water-soluble cumpltnds should have a high mass weathering or Sante Willogical hreakdown while in the sial. Typical chemicals gellerally found at gasOline-
<br /> Rall,fet rate Ir,nu me varxu plus.'m the aqueous phase 4'111lpounds that have shown succes,ti,r removal its hapacled silts and their re.Welive varix pressure and wiper solubility polriertics are shown in Table I.
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