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Coal fired power plants face unique water treatment challenges compounded by a dynamic and stringent regulatory environment. Frontier Water provides a simple, data-based, packaged equipment solution to solve these treatment challenges. Harnessing lessons learned through extensive piloting efforts, plant operations, and equipment fabrication, Frontier has successfully designed and delivered multiple full-scale SeHAWK® wastewater treatment plants which meet and exceed current and emerging regulations.


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Frontier’s Approach to FGD WATER TREATMENT

Flue Gas Desulfurization scrubbers produce wastewater high in total dissolved solids (TDS), selenium, arsenic, nitrate, and mercury making it difficult to treat by conventional physical chemical processes alone. New regulations at the state and federal levels necessitate treatment of these constituents to very low levels. The SeHAWK® FGD advanced treatment system, is specifically developed to meet the steam electric Effluent Limitation Guidelines (ELGs) with a high efficiency low retention time bioreactor.

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Frontier’s Approach to COAL ASH WATER TREATMENT

Coal ash, a byproduct of coal-fired power generation, often contains difficult to treat constituents such as selenium, nitrate, and metals that can impact water bodies. Due to EPA regulations under the Disposal of Coal Combustion Residuals from Electric Utilities Rule, commonly referred to as the CCR rule, many utilities have elected to close CCR ponds, treating and discharging the impacted water. For utilities requiring temporary treatment to support the closure of ash ponds, Frontier offers a leaseable advanced treatment solution through the SeHAWK® Mobile system. For longer term projects, Frontier provides a permanent treatment option with the SeHAWK® Link expandable bioreactor product. To provide the total water treatment solution, the SeHAWK® bioreactor easily integrates with treatment processes such as clarification for TSS removal, ultrafiltration, and reverse osmosis.


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