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05/26/2009 13:27 9518273349 DOUGLAS KUNEY PAGE 06/14 <br /> In these instances, tris more sensitives methane forming <br /> bacteria do not reproduce quickly enough to ze the <br /> excess acids produced by the other bacteria. . f undesirable <br /> conditions such as overloading persist, the mune bacteria <br /> populations will decline and a, chronically malodorous lagoon <br /> will result. <br /> some materials contained in feed, such as copper, zine, and <br /> alkali metals, have been reported to inhibit anaarobic <br /> bacterial. action. However, these materials safe usually not <br /> present in poultry wastes in seuffiCient guantlties to <br /> significantly affect lagoon activity. A=Qni toxicity may <br /> develop when high concentrations are present. This occurs <br /> wren raw manure is placed in a lagoon without enough <br /> dilution water. Common salts, sodium chloride and calcium <br /> chloride can also accumulate In lagoon effluent to <br /> Inhibitory levOls. While soluble sulfides 1=4e been <br /> =rtt,",Yt <br /> o be. toxic to anaerobic bacteria, it is unlikely <br /> will be present at lavals sufficient to' �.tihibit <br /> bacterial activity in poultry lagoons. <br /> Extremely variable conditions for <br /> logo rl�destlqn in waste <br /> fand arms and geographical regions, <br /> ebaraateri.atics between Classes of poultry haIVe made exact <br /> design data difficult to obtain. Local lagoda design experic* andof <br /> truetio�n should b�etb �one �the"dS.D.A. Sail <br /> regional yniv�ersity mLnd must conform <br /> Comervation Service, and others (1,Z,3,4) r <br /> t,o applicable state and local regulations. <br /> Bacterial activity is greatest at higher tem�eratvres, so <br /> anaerobic lagoons work bast in areas without `cold winters <br /> greater design treatment volume is required in colder <br /> ragiem. Barth (2) aurveyed working field 14goons from all <br /> regions of th$ cont Mental Unitednt forw <br /> e and rec handed a <br /> rational design procedure to <br /> temperature, extra dilution volume for odor 6ontrol, extra <br /> volume for sludge accumulation, and minimum treatment volume <br /> for a mature lagoon (considering sludge accumulation) . The <br /> design values given by Barth are 50mewb&t the Amen Society of Lkgriculturaliva <br /> than. those given by cis <br /> II=qjjk (1) . Thn value$ in Table 1 may bei used as a guide <br /> for design Values for anaerobic 3-acJ00ns, <br /> The .best lagoons will produce o=asicnal odors for the <br /> reasons 'given above. Since even a slight odor will, be <br /> objectional to some people, consider prevailing winds and <br /> locate lagoons downwind from the farm home' and other <br /> residences. Lagoons.shculd be located a jilhimum of 1/3 mile <br /> • i <br /> X69 <br />