Effluent Limitations Guidelines (ELGs), Part V: Flue Gas Desulfurization (FGD) Wastewater

For coal-fired power stations, achieving compliance with the US Environmental Protection Agency’s Effluent Limitations Guidelines (ELGs) Flue Gas Desulfurization (FGD) wastewater requirements can be challenging, complex, and expensive. There are many treatment options available on the marketplace, but often what is best for each station is a tailored solution to meet its unique needs.

To assist stations in establishing FGD compliant wastewater, I’ve authored another comprehensive white paper that provides the guiding steps towards FGD compliance—an abstract of the paper is provided below.

Flue Gas Desulfurization (FGD) Wastewater

ABSTRACT | One of the major compliance hurdles introduced by the recently finalized Effluent Limitations Guidelines (ELGs) is the treatment of Flue Gas Desulfurization (FGD) wastewater. FGD wastewater flow and quality vary from station to station. Treatment to achieve ELG compliance often requires a unique and customized solution to reduce cost, schedule, and equipment footprint. This white paper, authored by David Weakley II, PE, Assistant Engineering Manager at GAI Consultants, outlines seven steps to serve as a starting point for stations gearing up for ELG compliance for FGD wastewater. The steps include creating and verifying a station water balance; understanding the existing FGD wastewater system; identifying and evaluating constituents of concern; evaluating FGD treatment options; assessing applicable technologies through pilot testing; selecting a treatment technology; and developing the delivery documents, including all applicable permits, drawings, and specifications.

Read the Full White Paper

Stay tuned for more information on ELG compliance and what it means for the coal power industry. For questions or additional information, contact Assistant Engineering Manager David Weakley II, PE at 412.476.2000.

For related information, check out the following blog posts:

Effluent Limitations Guidelines (ELGs), Part I: Compliance Check | December 15, 2015
Effluent Limitations Guidelines (ELGs), Part II: Compliance Resources | February 9, 2016
Effluent Limitations Guidelines (ELGs), Part III: Importance of the Power Station Water Balance | March 8, 2016
Effluent Limitations Guidelines (ELGs), Part IV: Zero Liquid Discharge — Bottom Ash Transport Water | April 14, 2016

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