Down on the Farm

by Stephen P. Putnam, Technical Advisor; Wastewater Treatment Division, City of Fort Collins, 3036 E. Drak Rd., Ft. Collins, CO 80525,
W. Thomas Gallier, Manager; Wastewater Treatment Division City of Fort Collins, 3036 E. Drak Rd., Ft. Collins, CO 80525,

Serial Information: Civil Engineering—ASCE, 1989, Vol. 59, Issue 3, Pg. 60-62

Document Type: Feature article


A `total approach' to sludge handling, from nitrogen management to sub-surface injection lines, helps grow corn in Colorado. Engineers have gone a long way to keep things looking simple in Fort Collins. With the city's current production of sludge- up to 300,000 mgd -storage cannot be relied upon during periods of bad weather and low agricultural needs. A variety of sludge application and treatment procedures is needed. The 320 acre farm, which currently is growing corn only, is located one mile from the treatment plant. The farm is a hub for sludge management procedures. Some sludge arrives on flat-bed trucks in a cake form. This sludge is spread over the surface . Other sludge arrives as a liquid, having been pumped through a new pipeline to the farm, and is injected into the ground. The farm also has a large composting facility, where sludge is turned into a marketable product.

Subject Headings: Sludge | Agriculture | Crops | Nitrogen | Trucks | Pumps | Pipelines | Composting | Colorado | United States

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