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Options for increasing SO{sub 2} removal and improving the water balance at Hoosier Energy`s Merom Station: Volume 3, Appendixes C, D, E, and F. Final report

Technical Report ·
OSTI ID:80351
The FGD systems at Hoosier Energy`s Merom Station currently operate with a positive water balance (the systems discharge water). This poses a number of problems with the current station operation and for the potential use of additives in the FGD systems to enhance S0{sub 2} removal. Problems with the FGD system water balance under the current plant operation are related to the wastewater treatment and makeup water requirements. Water generated by the FGD system is sent to the plant`s wastewater system for treatment prior to discharge. The treatment system is currently operating at greater-than-design capacity, which is at least partly due to effluent from the FGD system. The positive FGD system water balance also requires more makeup water for the FGD system, and makeup water is in short supply at Merom during full-load operation. The positive water balance will also increase additive consumption if additives are used to increase the S0{sub 2} removal capabilities of the FGD system, resulting in higher FGD system operating costs. The Electric Power Research Institute (EPRI) has collaborated on a project with the National Rural Electric Cooperative Association (NRECA) and Hoosier Energy to investigate the FGD system water balance. The results of the investigation are documented in this technical note. Several other issues were also investigated as part of this project: improving the overall plant water balance with integration of the FGD system water balance; investigating methods of increasing S0{sub 2} removal (e.g.,additives, increasing the limestone addition rate, etc.); and evaluating the potential effects of FGD system additives on waste disposal properties. Work completed in these other areas has been reported in separate documents.
Research Organization:
Electric Power Research Inst., Palo Alto, CA (United States); Radian Corp., Austin, TX (United States)
Sponsoring Organization:
Electric Power Research Inst., Palo Alto, CA (United States)
OSTI ID:
80351
Report Number(s):
EPRI-TR--103923-Vol.3
Country of Publication:
United States
Language:
English