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05126!2689 13:18 9518273349 DOUGLAS KUNEY PAGE 10110 <br /> wastes. rumPing frQA a secondary lagoon reduces the solids pickup common in <br /> prizaary lagoons due to seasonal water turnovers and hi logical mixing. ? <br /> Sizing, of secondary lagoons is not Clearly defined or critical. North <br /> Carolina recommendations are that the second lagoon hAve a minimum of 90 days <br /> storage Of wastewater generated as ltidlcaLed in. Figue 1 plus enough volume <br /> for the combined 25-year, 24-hour rainfall storage frog both lagoons. <br /> POULTILY LAGOON MANAGEnM SUMR� <br /> 1. Now lageorts should be filled one-half full vji water pz:xvr Lo waste <br /> input, and the liquid maintained at or above the I�lesign treatment level. <br /> 2. when possible, manure loading of a new lagoon should begin in the spring <br /> to permit a good bacterial, population to develop 4uring the warm season. <br /> 1 <br /> 3. Lagoons should be loaded on a frequent regular bads avoiding large shock <br /> loadings which cause excessive odors and nutrient level fluctuations. <br /> /t Apply one pound of agricultural lime per 1000 cub�et of lagoon volume <br /> when the lagoon liquid pit falls below 7 to optimi::a bacterial digpstion. <br /> 5. Mechanical aeration can be used to control odors, reduce nitrogen <br /> ccntarrt, and reduce aurf'ace arca but only az lily Ivpesating coatis. <br /> I <br /> G. Solids separation and removal from rata wastes ei�her mechanically or by <br /> gravity settling can reduce the sludge buildup an• organic loading rate. <br /> 7. Remove mluft@ from lagoons whan 75% of the design treatment volume has <br /> accumulated. <br /> 8. Prevent additions of bedding materials, long-stemmed vegetation, molded <br /> feed, egg flats and other foreign material or debits to lagoons. <br /> 9. Maintain strict vegetation, rodent and varmint coltrol near lagoon edges. <br /> 14. flan lagoon liquid drawdowns such that adequatdi wastewater storage is <br /> available during wet seasons. <br /> 11. Do not lower the lagoon liquid level below the seasonal groundwater table <br /> Ipcd <br /> 12. *xr%gato lagoon liquid with equment selected handle the particular <br /> waste characteristics, whenever the lagoon Pills �o the top of the normal <br /> wastewater storage level, on field crops or grassland at agronomic rates. <br /> i <br /> 13. LoCate pump intakes approximately 18 inches undern6ath the liquid surface <br /> and ac far from the waste inlet to the lageo%% as passible, <br /> 1 <br /> 14. Electric pump housings should be adequately groulded to prevent stray <br /> voltage from contributing to salt deposits on pump lnternal surfaces. <br /> 15. Irrigate when odnr,a ars apt to be least offenzivc, on days with low <br /> humidity, or when breezes are blowing away from n4Iigh'bori,ng residences_ <br /> I <br /> 33 l' <br />