Reuse of Lime Sludge from Water Softening and Coal Combustion Byproducts, TR-459, 2004

(2004) Reuse of Lime Sludge from Water Softening and Coal Combustion Byproducts, TR-459, 2004. Transportation, Department of

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Abstract

Disposal of lime sludge remains a major challenge to cities in the Midwest. Disposal of lime sludge from water softening adds about 7-10% to the cost of water treatment. Having effective and safe options is essential for future compliance with the regulations of the State of Iowa and within budget restrictions. Dewatering and drying are essential to all reuse applications as this affects transportation costs and utility. Feasibility tests were conducted on some promising applications like SOx control in power generation facilities that burn coal, replacement of limestone as an ingredient in portland cement production, dust control on gravel roads, neutralization of industrial wastewater pH, and combination with fly ash or cement in construction fill applications. A detailed report and analysis of the construction fills application is presented in the second half of the report. A brief discussion of the results directly follows.

Item Type: Departmental Report
Keywords: Calcium oxide, Cement, Coal, Combustion, Construction, Control, Costs, Dewatering, Drying, Dust control, Feasibility analysis, Fillers (Materials), Fly ash, Gravel roads, Industrial wastes, Limestone, Neutralization, pH value, Portland cement, Production, Sludge (Deposit), Sulfur oxides, Utilization, Waste disposal, Waste products
Subjects: Transportation
Transportation > Research
Transportation > Environment
Transportation > Environment > Water
ID Code: 19963
Deposited By: Iowa DOT Library
Deposited On: 29 Jun 2015 19:11
Last Modified: 29 Jun 2015 19:11
URI: http://publications.iowa.gov/id/eprint/19963