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05/2612069 13:27 9518273349 DOUGLAS KUNEY PAGE 04/14 <br /> descending order of priority: <br /> I. Odor emissions of low intensity and f equency, which do <br /> riot cause a pzoblem. for the owner or 'hose who live <br /> work, or visit in the vice' Utya <br /> 2. Sludge accumulations which are suffic eptly low that they <br /> never have to be removed during the life of the lagoon, <br /> or that lagoon construction or operating procedures <br /> permit predictable schedules for sludge removal. <br /> i <br /> 3. Effective and efficient biodegradation of organic wastes <br /> placed in the lagoon for mini=m slud*e and odor <br /> production. <br /> II� <br /> 4. Ability to easily remove and 'utilize ]lagoon supernatant, <br /> and to add dilution water as needed. <br /> LaMn-Ady-antLVAN., <br /> Rey advantages at poultry wants lagoon* aI e: <br /> I. Convenience; ease, and flexibility of 1waste storage and <br /> tz�eatment. <br /> E. Loss land required for envix nmantally�, safe field <br /> disposal. <br /> 3. Recycling of liquid (especially with �*=nd-staqe <br /> lagoons) 'for waste collection gutters and field disposal <br /> of liquid Witt simple irrigation syst <br /> 4. Lour labor and operating costs. <br /> Rey disadvantages of poultry waste .lagoo� are; <br /> i <br /> 1. •Offensive odors, usually associated aitb poor design and <br /> management. <br /> 2. Law of manure nutrients for fartiliaer. <br /> 3.. Periodic and difficult sludge rezoval vay be necessary, <br /> especially if lagoon is unders;12ed. <br /> 4. Groundwater pollution potential, especially waxen <br /> geological conditions, construction, or management are <br /> S. Mechanical aerators, if required, havd high energy costs, <br /> S, Pa.oating iris (partilarly featheri and egg shells) <br /> axe sc�metimms a problem with poultry Taste lagoons. <br /> i <br /> i <br /> I <br /> Aerobic systems require dissolved oxygen to support <br /> bacterid, and tend to produce more compl to digestion with <br /> relatively odor-free end products when they are designed and <br /> function properly. However; they do note stabilize as much <br /> organic matter per unit of lagoon volume) and they must be <br /> $hallow, with a relatively large surfaceiarea to maintain <br /> sutf'icient dissolved oxygen for the aerobic process. <br /> 257 <br />