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05/26/2009 13:18 951827 DOUGLAS KUNEY PAGE 07/10 <br /> establishment of a stable bacterial population. Manure should be added to <br /> anaerobic lagoons as froyowntly as possible, preferably at least daily. <br /> can cause sharp increases <br /> Infrequent shock loadings in 6dor production and <br /> wide fluctuations in nutrient content. Lagoon liquid dr"wn by irrigation <br /> should begin wban the liquid reaches the maximum normal wastewater storage <br /> level. Liquid should not be pumped below the design tre tment level so that <br /> adequate volume is alw4YS available for optimum bacterial ligestion. <br /> An anaerobic lagoon in proper balance will have a pH rangiilg from 7 - 8 <br /> (slightly basic) . The pH in new lagoon-v without adequate dilution water or in <br /> overloaded lagoons can be reduced to 6.5 or less (acidi thereby creating <br /> odor prohl nms This condition can be temporarily C rrected by evenly <br /> distributing agricultural lime (preferably hydrated) to t6 liquid surface at <br /> the rate of one pound per 1000 cubic feet of lagoon IrOlum�. <br /> Land AUR11cal <br /> Lagoon liquid can provide substantial amounts of nutLients L-0 grassland, <br /> cropland, or woodlots, with application rates based on maItching, the available <br /> niLlv,5en content of the 14Lgoon liquid to the fertilize requirement of the <br /> crop being irrigated. Nutrient concentrations vary wiJely 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. Trible. 3 gives typical <br /> c�Laractarjsti*s of anaerobic lAgoon liquid in lieu of act�al test results. <br /> Liquid from lightly-loaded anaerobic lagoons can ! be applied through <br /> Sprinkler n9ZZles 1/4 inob or larger. single-nozzle., atr�i5ht-bnra sprinklers <br /> suction intakes should be floa6d ap proximately 18 <br /> are recommended. Pump <br /> inches undornaarh the lagoon liquid surface. Liquid from moderate to heavily <br /> loaded lagoons can be applied through 1/2- to .3/4-inch I zzles. Larger g;ui <br /> type sprinklers wj�b 3/4- to 2-inch nozzle diameters should be used for <br /> lagoons witb high concei-it;rations of aolidv or liquid sludge irrigation. <br /> For solids contents under 4%, standard centrifugal irrigation pumps are <br /> recommended over specialized chopper pumps or cutter attic-luAents. if a IaSoon <br /> contains an appreciable amount of long-stemed vegetation Or large debris, <br /> this material should be remOvOd And Off"" mad& to to P�event its recurrence. <br /> Even with good bacterial digestion, signiflcan� amounts Of sludge <br /> Table 3. Poultry Anaerobic Lagoon Liquid ChaActeristics <br /> Nitrogen ; Phosphorus Potassium <br /> Bird type Total Chemical Oxygen 1 05 X20 <br /> solids Demand, COD N <br /> , <br /> � <br /> ~~ - -_-_- - ' <br /> Iagmcr mean 0.47 2700 181 , <br />