Louisa Scrubber and Baghouse Project

The Louisa Scrubber and Baghouse Project, the first project of its kind for Kiewit, provided a fully integrated air quality control system facility for the Louisa Generating Station. The short completion schedule set forth by the owner required a disciplined coordination effort among the team to finish on time. The project has since served as a benchmark for quality and owner satisfaction for similar projects. 

The Louisa Environmental Project Partners team, a joint venture between Kiewit and Burns & McDonnell, was awarded the contract for detailed design, procurement, construction, startup and testing of a scrubber and baghouse addition to an existing 745-megawatt coal-fired power plant. The project consisted of two 69-foot diameter spray dryer absorber vessels, two 16-com- partment fabric filter systems, a lime slurry batch and delivery system, dry lime unloading and storage systems, a complete waste ash system, as well as lime and ash rail and truck capabilities. The new air quality measures reduced the plant’s sulfur dioxide (SO ) emissions by 90 percent. 

The owner currently meets or exceeds emissions requirements at all of its power plants. Continued emissions reduction projects will assist with meeting or exceeding new environmental requirements that prescribe more stringent emissions levels for sulfur dioxide (SO ), nitrogen oxides (NO ) and mercury (Hg) emissions from coal-fired generating facilities.