Digester Gas Utilization Programs

by Raymond R. Rimkus, Chf. of Maintenance and Operations; Metropolitan San. Dist. of Greater Chicago, Chicago, Ill.,
Alfred J. Michuda, Engr. of Treatment Plant Operations; West-Southwest Sewage Treatment Works, Metropolitan San. Dist. of Greater, Chicago, Chicago, Ill.,
John M. Ryan, Asst. Chf. Engrg.; West-Southwest Sewage Treatment Works, Metropolitan San. Dist. of Greater Chicago, Chicago, Ill.,


Serial Information: Journal of the Environmental Engineering Division, 1980, Vol. 106, Issue 6, Pg. 1071-1078


Document Type: Journal Paper

Abstract: A method to completelt utilize digester gas has been studied and designed by the Metropolitan Sanitary District of Greater Chicago at its West-Southwest Plant. Data on the amount of gas produced, utilized, and wasted are compiled for one year on monthly basis. The dollar value of the wasted gas is determined in equivalent cost of natural gas. Three alternatives for the utilization of wasted gas are considered, namely: gas turbine generation, internal combustion engine prime mover, and low-pressure steam boilers. A study of low-pressure steam sources and steam demand at the west-Southwest Plant is presented along with the design considerations for the selection of equipment for the system. Certain things peculiar to the West-Southwest Plant, such as existing available buildings, existing pipelines, and the future expansion of the plant were taken into account in designing the system.

Subject Headings: Natural gas | Building design | Recycling | Existing buildings | Urban areas | Data analysis | Waste management | North America | Illinois | United States | Chicago

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