Laserfiche WebLink
f - 'Bi00VT - Pa go 4 <br /> for metabolic. attack on a particular hydrocarbon are <br /> active, or even produced... - <br /> A number of.- aerobic so-il biodegradation protocols have -been <br /> ;found to offer .excel-len-t .degia°dation -pot entials'_for <br /> petroleum contamnated `soils.-: Thes_e are <br /> Forced Air Composting - Windrowing., <br /> ~an <br /> dfarmin <br /> hin-s read`I, <br /> T g� <br /> :.. <br /> Static Pile Aeration -. - p = ;. .... ... .. . _ <br /> Forced .air composting -has 'been utilized during periods of <br /> inclement- weather . and=_under :c.ircumstarices where: pace for_'_ <br /> treatment is limited It involves the thorough .mixing of _- 1 <br /> cont-aminat'ed-soil •with „°organic. °material with.-certain ` <br /> forris' of compost. having proven-to '-be .superior: bulking i <br /> agents and sources of�- n-on-pathogenic hydrocarbon utilizing <br /> bacteriayand fungi ;. as 3,well as -a,:-supplier of- nutrients ; <br /> mi:nerals-, :and,mo sture. The ..amended soil- is then formed <br /> into large,fquadrilatera1 beds _ thiraugh which slotted piping <br /> i`s p;laced. , The piping. is .then connected to =pumps that draw <br /> air through-the beds n' order, to :maintain_ adequate levels - <br /> -- ,j <br /> of oxygen within. Beds 'may also be -covered t-oregulate; 2 <br /> _ <br /> temperature-- and protect'against extreme weather.=conditions§ .,. <br /> Static pi Ie. ;aeration is -simiI:ar to_ forced�-air composting,;, S <br /> except'�t-hat= no piping is pI:aced=-wi.thin -the' treatment ;bed as <br /> periodic cooler temp'eratur,es create -conditions favorable. to <br /> -' the passa-ve °movement of .-. airinto,-.the beds : -This. air then - - <br /> heated_ and �e <br /> moves ,upward as a__rsult-"of` bi'ologi'cal- activit.y;; <br /> drawing: cooloer, ambient: a3.3r--, .nto- t-he: :bed._ <br /> Windr-owing is a -process that` util'fzes .a--specially modified <br /> soi-ls mixing; machine -to' construct 'three -to -fivefoot high . <br /> - -bed's of amended-.so:i1 <br /> . The .beds are- turned periodically .to <br /> maintain :.aerobic conditions " and° adjust:--soil. particle size. _ <br /> With' thin-s.pread':-landf .... contaminated soil.' is spread <br /> th1 y (usual ly -to, a -depth . o:f=`9-12 inches) .-.t6'`Permit <br /> _ passive:aeration and ;makep.ermi t `further Kms xrng:;:- <br /> In 411 cases , the treatment -beds: must :be = <br />