Laserfiche WebLink
65/26/2009 13:27 9518273 DOUGLAS KUNEY PAGE 08/14 <br /> s <br /> i <br /> method for approaching this goalis to drain or scrape <br /> wastes from, several buildings into the la4o+an on a staggered <br /> schedule. <br /> Select a site where all buildings can uti, ize gravity- .-. <br /> drainage or downhill scraping to the lago6n. If the lagoon <br /> must be located uphill from the waste s6uice, a sump and - <br /> pump can be used for waste transfer. Howiver, udz extra <br /> e3qpease and maintenance problem may be avdided by advance <br /> planning. <br /> The lagoon, while a prizary component, is fete <br /> uraste handling systema Ta v4st regions o u. S." alid <br /> particularly in the. East, normal years will p :`'- '.e <br /> precipitation in excess of evaporation. 1heisfore, without <br /> leakage or sufficient evaporation, and siAce effluent will <br /> t be suitable for discharge into state4aters, it is — _ <br /> necessary to remove ese; effluent. h land with :e> <br /> desirable infiltration characteristics and crop production— <br /> potential should be available or irrigation to utilire= - <br /> aex s nutrient-eariched effluent. <br /> .b <br /> An anaerobic lagoon should be sized to provide a minima <br /> lagoon treatment volume far the waste wni6ft will be handled. <br /> Volatile solids M) are the part of manuie that in <br /> biodegradable, so treatment volumeis ordinarily based on VS <br /> loading. volatile solids loading rate deowids on manure <br /> production of the poultry to be served. Volatile solids and <br /> manure coon are re2ated to several tactors, includIng <br /> food rati= and bird weight. Table 1 shois anaerobic lagoon <br /> design criteria based an three sources fob v=ious climates <br /> according to bird tnpe and weight. <br /> PIanned valum should be Increased to account for slud4s <br /> accumlation and special l t such in water spillage, <br /> and unusually high use of fresh waterforiclegming or <br /> flusb4nq. The design criteria le 1account for sludge <br /> accumulation over a projected 1S-year lagoon life. .: <br /> volume must also be included fora stibra e, and to hold <br /> off water from the highest24-hour storm event .1' • y,=to <br /> occur locally once in 25 Y a Oi a 1} . Sa}` it <br /> is a qcxA idea to divert as wAch surfac4 water as possible <br /> from the lagoon. Storm data is availablelfromthe U. S. <br /> Weatber bureau to determine 100a1 values ior 24-bouar, 25- <br /> year storm events. <br /> Lagoon depth may range from 6 to 20 Feet depending upon <br /> omstmction techniques and site Conditions. A Mini=mn <br /> waterdepth of 6 feet should alvays be maintained. An <br /> mentioned earlier, e o reduce lapid temperature <br /> flu ati , y re stkble and favorable <br /> environment for zethane bacteria. Ddopek lagoons also <br /> 71 <br />