(best examples and good practices) on household organic waste ...

(best examples and good practices) on household organic waste ... (best examples and good practices) on household organic waste ...

11.11.2014 Views

229 The Rapid City composting plant (Picture 78.) in South Dakota was built in three stages. It is a facility that treats both Municipal Solid Waste (MSW) ong>andong> sewage sludge. Partnering enabled Rapid City to complete the third ong>andong> final phase of its biosolids ong>andong> municipal solid waste (MSW) co-composting facility on time ong>andong> within budget. The first phases of the solid waste program which consisted of the Material Recovery Facility ong>andong> the two rotating bioreactors was completed in 1997. Economic concerns prompted the City to put the final phase composting project on hold. Interest was renewed in 1999 when Rapid City decided to upgrade its Water Reclamation Facility ong>andong> discovered that biosolids long>andong> application would require purchasing an additional 1,100 acres of long>andong>. Cocomposting biosolids with MSW would achieve greater economic benefits, meet the recycling goals ong>andong> preserve long>andong>fill space. However, problems surfaced again in 2002 when the first round of bids for the co-composting facility exceeded the project budget. US Filter presented an approach that the City accepted. The technical team conducted an intense design workshop to achieve the project ong>andong> budget objectives. Within six months the design was completed, the project was successfully rebid ong>andong> construction was underway. Finally, the facility started to operate at May 2003. It has the capacity of processing 355 cubic yards per day of municipal solid waste with biosolids at 9 tunnels, each 10 feet wide x 8 feet high x 280 feet long. The solids retention time is 29 days, while the area of the composting building is 47,000 square feet. The facility consists of the active composting facility, aerated curing (20,000 square feet compost aerated curing shelter with a retention time of 30 days) ong>andong> a refining building with a screener ong>andong> destoner. The product is stored at a 3 acre area. The compost product is used in long>andong> reclamation ong>andong> long>andong>scaping projects.

230 Picture 78.: Transportation of Municipal Solid Waste ong>andong> the Final Product after cocomposting of Solid Wastes with Biosolid in USA(Wastesum project Del 3A,. 2010)

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Picture 78.: Transportati<strong>on</strong> of Municipal Solid Waste <str<strong>on</strong>g>and</str<strong>on</strong>g> the Final Product after<br />

cocomposting of Solid Wastes with Biosolid in USA(Wastesum project Del 3A,. 2010)

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