Coal Fired Power Plant And ZLD For FGD Wastewater
Case Study: Coal Fired Power Plant And ZLD For FGD Wastewater
The Facility
Illinois' City of Springfield's Dallman Power Station's three coal-fired units and soon to be installed fourth unit, are equipped with flue gas desulfurization (FGD) systems (scrubbers) to control sulfur dioxide (SO2) emissions.
The Problem
A sharp increase in boron concentration in the FGD
wastewater required that The City of Springfield Office of
Public Utilities and the Illinois Environmental Protection
Agency develop a boron mitigation strategy to remove
the boron from the waste streams at the power generation
facility. This meant including a new FGD wastewater
treatment (Zero Liquid Discharge or ZLD) plant for
the power plant. The elevated boron levels are caused
from ammonia carryover due to the Dallman Unit's
Selective Catalytic Reduction (SCR) systems' nitrogen
removal process.
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Case Study: Coal Fired Power Plant And ZLD For FGD Wastewater
SOURCE: Aquatech International Corporation