Engineering solutions for wastewater treatment

Engineering solutions for wastewater treatment

One of the most critical challenges facing our environment today is how we manage wastewater. According to the United States Environmental Protection Agency (EPA), wastewater discharges from industrial and commercial sources may contain pollutants at levels that could affect the quality of receiving waters or interfere with publicly owned treatment works ( POTW).

With organizations adopting environmental, social and corporate governance (ESG) standards, it becomes urgent to implement technology that helps achieve sustainable and efficient wastewater treatment, especially at large industrial sites. The ability to design solutions to mitigate these problems and protect local communities and environments is critical.

Through processes such as wet exhaust gas desulfurization (FGD), we can use the technology to remove sulfur dioxide from the exhaust gases of fossil fuel power plants and from emissions from other processes that emit sulfur oxide such as incineration. some waste; however, this critical process for the protection of our atmosphere creates a waste stream of sewage which must then be addressed with other treatment processes.

Bringing FGD to life in BREC

Wood initiated a one-of-a-kind project in late 2020, providing engineering and procurement services to relocate the Wet Exhaust Gas Desulfurization (WFGD) absorber from Big Rivers Electric Corporation’s (BREC) Coleman Generating Station to the BREC DB Wilson Station Generating Station.

Having recently won the next phase of the project, the team is now enabling BREC to realize the full potential of its environmental improvement project by completing the Wet Exhaust Gas Desulfurization (WFGD) system with the addition of two new structures.

The Engineering, Procurement and Construction (EPC) Services scope will add a new gypsum dewatering plant to the site, treating and drying sulfur dioxide (SO2) purging the scrubber to mitigate release to the local atmosphere, allowing the plant to produce salable gypsum and reduce unusable waste.

The new wastewater treatment plant will be able to treat a waste stream of 150 gallons per minute (GPM). The concentrate from the wastewater treatment plant will be directed to a spray dryer, designed and supplied by Wood, which uses boiler fumes to evaporate liquid waste as part of a ZLD (Zero Liquid Discharge) system and diverts solid waste in a sleeve chamber for collection. As a result, the project does not discharge wastewater into the environment.

About 150 people are employed under the contract for this conventional energy project. 90 of these positions have been retained from previous jobs between BREC and Wood and 60 are new roles created specifically for the project. The engineering design will be performed at Wood’s regional office in Georgia, while construction will be performed at the BREC site in Centertown, Kentucky.

Wood’s Power & Industrials EPC Americas team is proud to be the facilitator of this 35-year relationship with Big Rivers Electric Corporation. This project marks the completion of BREC’s Wet FGD plant at their DB Wilson station, a 417 MW power plant, and represents Wood’s ability to design solutions that will ensure customers remain compliant with environmental regulations and requirements, creating a sustainable path for industry.

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