Two Bottom Ash Management/Handling System Enhancement Case Studies – From Technology Evaluation and Design through Construction and Performance Verification

摘要

Over the last several years, Consumers Energy has completed significant enhancements to the bottom ash management/handling systems at its J.H. Campbell and D.E. Karn Generating Plants. This paper provides a narrative summary of the projects, beginning with an evaluation of bottom ash management/handling technologies that included concrete tanks, lined surface impoundments, and mechanical dewatering. Concrete bottom ash tanks were sited, designed, and constructed at one of the sites, while a lined surface impoundment was sited, designed, and constructed at the other. Design and construction considerations for both technologies are discussed. With both systems now in operation and performing in accordance with Consumers Energy’s design objectives, in-service system performance and operational best practices are emphasized.