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05/2612009 13:27 9518279 DOUGLAS KUNEV PAGE 04114 <br /> descending order of priori <br /> 1. Odor emissions of low intensity and f equency` which do <br /> not cause a problem for e owner or �h+osa who live, <br /> work, or visit in the vicinity. <br /> 2. Sludge accumulations which are sufficiently low that they <br /> never have to be removed the 111fe of the lagoon, <br /> or that lagoon construction or operatling procedures <br /> Permit predictable schedules for sl le removal. <br /> 3. Effective and efficient tioni of organic wastes <br /> pla in the lagoon for minimum sl a and odor <br /> productiqn. <br /> 4. Ability to easily remove and utilize lagoon supernatant,, <br /> and to add dilution water an needed. <br /> g,'QO+'.&4Mk++_taetea__and R rtes <br /> Nay advantages of poultry vasta lagoons • <br /> I <br /> 1. Convenience-,, ease, and flexibility of i to storage and <br /> 2. Less land required for lsafe field <br /> 3. Recycling of liquid (especially with second-stage <br /> 1 ) 'for waste collection gutters,,j and field disposal <br /> of liquid with, simple tion systems. <br /> 4. Low labor and operating costs. <br /> TWy disadvantages of poultzy wasta ,laVI are: <br /> i <br /> I* -Offensive odors, Usually associated vit.h poor design and <br /> management. 1 <br /> 2. Loss of manurs nutrients orf iliser. <br /> 3.. Periodic and difficult sludgeremoval !say be necessary, <br /> especially it lagoon i undersized. <br /> 4. Groundwatur pollution potential,, espeIly w#en <br /> geological conditions, ion, or management are <br /> r. <br /> S. Neabisaical <br /> . aerators, i , high en costs® <br /> 6. Floating debris (particularly f shells) <br /> are $ t a pioblem With Poultry 4asta lagoons. <br /> dg C <br /> o , , tion <br /> I <br /> Aerobic system require dissolved oxygentosupport <br /> cte ria, tend to pr r 1 to digestion with <br /> atively odor-fr" end products when are designed and <br /> function properly. However; they do nota stabilize as much <br /> organic matter per unit of lagoon vol they must be <br /> shallow,, with a relative!y larga surfacelarea to maintain <br /> sufficient dissolved oxygen ror the aerobic process. . <br /> I <br /> 267 <br />