Evaluation of the EDTA Boiler Chemical Cleaning Waste addition to the Hoosier Energy Merom Station FDG System
Technical Report
·
OSTI ID:121506
- Radian Corporation, Austin, TX (United States); and others
In the past, utility boiler chemical cleaning waste (BCCW) has been disposed of by evaporation in the fireside of an operating boiler, co-ponded with other wastes in on-site ponds, or disposed of off site by a third party. These methods have either environmental or economic disadvantages. A previous bench-scale investigation funded by the Electric Power Research Institute (EPRI) indicated that one promising alternate disposal method was the addition of BCCW to an FGD system. A full-scale test of this disposal method was performed by adding an EDTA BCCW to the wet limestone, inhibited-oxidation FGD system at the Hoosier Energy Merom Station. The testing was co-funded by Hoosier Energy and EPRI. This paper presents results from the tests used to monitor operation of the FGD system (SO{sub 2} removal, limestone utilization, and sulfate oxidation) and the dewatering equipment (thickener and vacuum filter) to determine the effect of the BCCW. Toxicity characteristic leaching procedure (TCLP) test results on the mixed waste from the FGD system (FGD solids, fly ash, and lime) are also presented. Based on these results, disposal of EDTA BCCW in an FGD system with landfill disposal of the FGD wastes appears to be a viable alternative to other disposal methods.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 121506
- Report Number(s):
- EPRI-TR--105258-Vol.4; CONF-950332--Vol.4
- Country of Publication:
- United States
- Language:
- English
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