Laserfiche WebLink
<br />-15- <br /> <br />Metro flant <br /> <br />a. The MWCC should market heat-dried secondary sludge from the <br />Metro Plant. Primary sludge would be incinerated to provide <br />heat to process and dry the secondary sludge. If marketing <br />of heat-dried sludge is not feasible land application and/or <br />incineration would be pursued. <br /> <br />b. <br /> <br />The MWCC should pursue land application on private farms of <br />digested sludge from Anoka, Stillwater, Rosemount, Hastings, <br />Bayport and Cottage Grove plants. If the digested sludge <br />cannot be land applied because of availability of <br />land,climatic or operational conditions, the sludge would be <br />transported by truck to sewer interceptors flowing to the <br />Metro Plant. Unthickened sludge would be hauled to sewer <br />interceptors flowing to the Metro Plant from Anoka, <br />Stillwater, Rosemount and Hastings plants and thickened <br />sludge from Bayport and Cottage Grove plants. <br /> <br />. <br /> <br />Seneca Plant <br />-- <br /> <br />Continue the current practice of total sludge incineration. <br /> <br />~lu~ Lake flant <br /> <br />a. The MWCC should construct thickeners, anaerobic digesters <br />and dewatering devices and apply the digested sludge to <br />land. . It is recommended tha t Scottland Properties, Which <br />the MWCC owns, plus 140 acres of adjacent land be used for <br />sludge disposal. This land will be sufficient to dispose of <br />only one half the sludge prOduced. Therefore, an additional <br />600 acres of private farmland will be needed. <br /> <br />. <br /> <br />b . <br /> <br />The thickened sludge from Chaska and unthickened sludge from <br />Maple Plain plants should be hauled to interceptors flowing <br />to Blue Lake, and unthickened sludge from the 'Savage plan t <br />should be hauled directly to the Blue Lake plant. <br /> <br />Empire flant <br /> <br />Continue the current sludge processing system and spreading on <br />MWCC-owned land. <br /> <br />Grit and SC~!ling:!. <br /> <br />The MWCC should continue to use commercial haUling and landfil- <br />ling of grit and screenings. If costs become prohibitive, the <br />MWCC should be prepared to transport the grit and screenings to <br />its own landfill facility. <br />