UV Disinfection System Awarded AAEES Grand Prize

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Carollo
Carollo Engineers ultraviolet Richard Miller Treatment Plant AAEES

The $30 million, 240 mgd Richard Miller Treatment Plant began operation in September 2013

Carollo Eng., CDM Smith and Greater Cincinnati Water Works (GCWW) were recently awarded a grand prize by the American Academy of Environmental Engineers and Scientists (AAEES) for their work on an ultraviolet (UV) system at GCWW’s Richard Miller Treatment Plant (RMTP).

The AAEES Excellence in Environmental Engineering and Science Competition serves to identify and reward the best of today’s environmental engineering and science endeavors. The RMTP UV disinfection system was awarded the Grand Prize in the Operations/Management category.

Carollo Eng., CDM Smith and GCWW completed the design and construction of the $30 million, 240 million gal per day (mgd) RMTP facility, which began operation in September 2013. Carollo and CDM Smith provided engineering consulting services for the RMTP UV Disinfection Project, including multi-discipline engineering services through all project phases. Carollo provided specialized UV process analysis, UV system design support, structural design and startup services.

“It’s a great honor to be recognized for our innovative work at the Richard Miller Treatment Plant,” said Harold Wright, chief UV technologist for Carollo. “The entire team was focused on creating an advanced, efficient solution, while simultaneously keeping the public’s safety top of mind. At the forefront, we knew that utilizing UV treatment was critical to ensuring a successful future at RMTP. ”

Recognizing that the plant’s Ohio River water source is impacted by municipal wastewater, agricultural storm water runoff, and other potential sources of contaminants, GCWW made the decision to add UV treatment. This decision helped GCWW to improve public health protection for millions of customers and to position themselves to better address changing source water conditions, emerging pathogens, and regulatory requirements in the future.

To best use UV disinfection at the RMTP, The project team took a proactive approach that started during UV system pre-design, to identify and implement a strategy that would provide efficient UV system operation at the RMTP. This approach utilized Carollo’s UV system simulation software, the U.S. Environmental Protection Agency risk model, and CFD-based UV dose models to define UV system operation, including regulated and emerging pathogen inactivation and micropollutant destruction. The project team worked to define how the UV dose monitoring and control algorithm would be programmed into the UV system programmable logic controller, and conducted a series of factory and field startup tests that confirmed and optimized the algorithm.

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