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Nalco Mobotec Global
1601 W. Diehl Rd.
Naperville, IL 60563
USA
E-Mail us at:
nalcomobotec@nalco.com
Published Paper - Mercury Emissions: Demonstration of Air and Water Quality Management
Coal-fired power plants are under increasing regula¬tory pressure to control the release of Hazardous Air Pollutants (HAP) and contaminants in wastewater effluent. Mercury control strategies, therefore, must address both the air and water discharge requirements of power plants. The present paper demonstrates a mercury control strategy to ensure compliance with regulations for both air and water, utilizing existing equipment.
The demonstration occurred at a commercial coal-fired boiler. Prior to application of the control strategy, mercury air emission was measured at 0.0200 to 0.0275 lb/GWh. The wastewater treatment inlet mercury levels were 10,000 to 30,000 ppt. It was antici¬pated that increased flue gas mercury capture would translate to higher wastewater inlet mercury levels due to the improved transfer of mercury from the gas to water phase within the wet Flue Gas Desulfurizer (wFGD).
Nalco Mobotec controlled the mercury air emission through the application of MerControl® 7895 with the result of increasing flue gas mercury capture to greater than 90% (a target level of less than or equal to 0.008 lb/GWh). NALMET® 1689 applied in the wastewater treatment system decreased mercury levels to less than the target level of 200 ppt. Thereby, designing a holistic mercury control strategy, Nalco Mobotec met both air and water quality targets for the power plant.
| Document | Language | Geography | Size | Type |
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Published Paper - Mercury Emissions: Demonstration of Air and Water Quality Management |
English | North America | 0.60 MB |
