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05/26/2009 13:14 9518273349 DOUGLAS KUNEV PAGE 02/09 JrrY.76/ hMMOiC LagOOM i*torage/1 reatMent of L1Ve8tOCK Man ]vemity of M1...Page j of !U s Anaerobic Lagoons for Storage/Treat�ent of Livestock Manure Demid U Pkat and Charin ft.FaINW Oaperem®ntof Agrkuttirral ng *—at Remixes Comentation e Many r—stock producers with confine operations handle their ori waste as a liquid because of the Iaborsavino advantages,Anaerobic lagoons aro an i rai part of marry fiquitl-nan�tg systems.Lapp are pbnrflike serum Wd'ts sfad to provide biological and long-term storage of ahlinal waste.A livestock lagoon Ism e waste treatment plant containing manure that is usually diluted with buAding wash water,water wasted at animal WINIOM ,and rainfall.In a lagoon,the manure becomes p* ly liquefied and stabiliSCd by bactefial action before eventual land application,Lnmns may confein bre of three types of 496te-st3abllizing bacteria—anaerobic((nhlblted by axygdn),aerobio(requiring oxygen)or faouitatyc(maintained with Jr without oxygen).Legoona are larger than Manure storage hasima,which do not provide signgic M b gieal tma6*and,frequently,aro designed for shorter storage periods,On the other hand,Qn@Qr0biC lagoons are Cbnsaderab� Smaller than aerobic lagoons,which are designed to provWe a higher degree of treatment with less odor producldn.Anaerobic lagoons also decompose rare "anis matter per unit volume then aerobe ones.Duo to the tremengl4us arra required for adrobit twons to treat livestock waste,almost all lNestocit lelloorts are anaefti- Anaonabio logoonn are a aaaaful site and cast compromise batwoanh+sg•basins,end adrWa I•gOona.This guide well discuss anaerobic lagoon designs approved by the Missouri De Natural Resources(Missouri DNR)for livestock manure storage and treatatent Anaerobic proossus,which occur without free oxygen,liquefy or deg a organic wast"with high biochemical aacygan demand(BCID),well-desIgned and well-manages(lagoons have a musty oar,Foul odors may Indicate a malfunction.Even property functioning japorls may cause nuisance oe�ots beCeaasa Of their aYte or location br because Of pry,weather ocnditiona,distance to other lagoons and aep heeler distance from roeldanoea. Do net use anon h*Welm;who3rs odors may be a nsance l l Advanfagos of anaerailik fagoom • Manure Can be handled hydraulically with flushing syams, firms.pumps and litigation ayetam®. • Tho hlgPh d0d"of stabil' mdaees odon•during land applicbtnlm. • High ndtr sn(N)reduction miriftma the land area required to nuke use of the effluent • Lon"mit storage is provided at lav coaL I �. 011sadvantkag09 of anaerobfs la • Public perception may be VW a lagoon Is an lopen oexltainer of mlamum." • Undesirable odors may to produced during seasonal(spring and fan)ottamgas due to-turnover and spring abut up after the winter period of relatively little ftloglool activity,to Va"i;In late spring or early summer is preferred. • unow drabia odors may drat alt premises during atmospnenc leml ierawris Inveralone, • Undesirable odors may be present during land applir n by SM.y"am. • Nutrient availability it limited if manure is used as a farf lizar(du denHrifiCatat of N in the lagoon and mast pnbaptKmm(F)satnes to the m). • Pbtantal cast of rerwving buWup solids If the Imp is m tae d down and saints have been agowed to accumulate for several years without agitation during the annual ilump-down.Also,the land arm required to dispose of seaumulidq d N and eapecially p may not be ayaeable)nearby, L"atio n mquirements Ideally,lagoon ahould be kmtod Iger then the waat•aaurta ab thatpiquida ton drain by gravity to the lagoon and manure Can be flushed o tie la9�+by gravity.lfwash are scraped into the lagoon,proadmlty to the source Is asPOCIORY Important 9 waMN are drainedor flushed to the lagcmm,pre�Iad�mity for economical openttlon is not Ca crucial, Since June 30,1996,Missouri DNR requires now water wells to be at Lot 300 feet from a livestock manure lagoon. For weNs constructed between Nov.t,1887,and Juns 30,1096,MW"DNR rules recommend$00 fee"separation from a well to a lagoon and require a minimum of loo feet if a permit dr letter of approval Is sought them Missouri DNR for an operation whore a logean exifto wiMin 100 to 300 foot from a 4*6r st*ply befog Nov,1,1807,a favorable report mast be obtained frons the Missouri Division of Oology and Lard!Survey.(A geologic report should be made for Oil l QWS regardless of ptaAmity m wells.)Special circumstances ms�dictete seParaft distances greater than tree requirement these cinarmstances are evaluated on a raspy-Case bakfs, Location of lagoons with rasped to" ed n ems"(raWw"L!rat owned by the animal fading bperaw) W public buildings is an important consideration.Minimum dfstancea bf l/a6 to 1/2 mile from property lines and non- armed reeldencea hove been*uagcstod,For Class I concontratad anil!tlt toodktp operations(oApoa),me aretimt or buffer dlstanm required by legislation of#te 1998 Missouri(WOW A¢aambly are shown,in Table 1.The distafton depend On tie operation size(number of ardrrwl unite)and are messuted from the moon or the manure storage or confinement buflditnp to the neap Math buiidin9 of Occupied residerI6 not owned by the animal production operation.Also check for county onfinances Comeming CAFM. I http://extension.missouri.edu/publications/DisplayP .aspx`1P-EQ387 5/21/2009