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65/26/2609 13:18 9518273349 DOUGLAS KUNEY PAGE 07/16 <br /> i <br /> I <br /> establishment of a stable bacterial population. Manure should be added to <br /> anacrobxa lagoons as treq,kianrly as possible, preferably at least daily. <br /> Infrequent shock loadings can cause sharp increases in dor production and <br /> wide fluctuations in nutrient content. lagoon liquid dr `vdown by irrigation <br /> should begin when the liquid reaches the maximum no=al storage <br /> level. Liquid should not be pumped below the design use tment level so that <br /> adequate volume is always available for optimum bacterial digestion. <br /> An anaerobic lagoon in proper balance will bave a pH ranging from 7 - 8 <br /> (slightly basic) . 'rhe pH in new lagoons witho-ut &dequatc iilutian water er in ' <br /> overloaded lagoons can be reduced 'to 6.5 or less (acidic) , thereby creating <br /> Odor pro'hl ams, This condition can be temporarily c�rrected by evenly <br /> distributing agricultural lime (preferably hydrated) to tie liquid surface at <br /> the rate of one pound per 1000 cubic feet of lagoon volum�. <br /> Land A 1 cats <br /> Lagoon liquid can provide substantial amounts of nurri.ents 1.0 grassland, <br /> cropland, or woodlots, with application rates based on mJtching the available <br /> niLtur,en cantent of the lagoan liquid rn the fertilizerequirement of the <br /> crop being irrigated. Nutrient concentrations vary wi ly among different <br /> lagoons and within individual lagoons seasonally. Applicators are strongly <br /> encouraged to periodically have Lagoon samples analyze' to more accurately <br /> determine the amount of nutrients being land applied. T�ble 3 gives typical <br /> cl araecteristice of anaerobic. lagoon liquid in lieu of acttixal test results. <br /> Liquid from lightly-loaded anaerobic lagoons can ! be applied through <br /> sprinkler nozzles 1/4 inch or larger. single-nazzlc, atr�i.ght-bnra sprinklers <br /> are recommended. Pump suction intakes should be floatted approximately 18 <br /> Jnches undernear_h the lagoon liquid surface. Liquid from moderate to heavily <br /> loaded lagoons can be applied through 1/2- to 3/4-inch nozzles. Larger Stu;- <br /> type sprinklers witb 3/4- to 2-incl nozzle diametersshould be used for <br /> lagoots with high conceiiGrations of salide or ligUid s} ge jrrigation. <br /> For solids contents under 4%, standard centrifugal irrigation pumps are <br /> recomxeended over specialized chopper pumps or cutter att cluµents. If a 2agavn - <br /> contains an appreciable amount of long-stemmed vegetation or large debris, <br /> this material should be removed and a£forte spade to to P7event its recurrence. <br /> I <br /> ,�,1?cdg_e-Remo_v_gI <br /> Even with good bacterial digestion, significant amounts of sludge <br /> Table 3. Poultry Anaerobic Lagoon Liquid OhaActeristics <br /> Bird type Total Chemical oxygen Nitrogen lPhosphorus Potassium <br /> Solids Demand, GOD N P205 K20 t <br /> %wb mg/L --------- bs/acre-inch---- ---- 3 <br /> ----------�-47^---------------------------270q1$� 45 x3t� <br /> � __ ---- ---- ~ - <br /> Layer------ ean , <br /> std. dev. 0.26 1700 110 28 142 <br /> 30 <br /> I <br /> i <br />