Dec 15, 2014

Brewing Up Efficient Treatment

Brewery Ommegang in Cooperstown, N.Y., which was unable to send its wastewater to a public treatment facility, built its own private 20,000-gal-per-day industrial membrane bioreactor (MBR) package plant. Planners wanted to ensure that every element of the treatment process was designed to take advantage of the latest technology advancements to deliver optimal treatment in the least amount of time, with the smallest possible footprint and highest level of efficiency and cost-effectiveness. 

Rick Debar, technical and wastewater treatment plant manager for the brewery, worked with Steve Buttles, project superintendent for Western Water/GW&E of Austin, Texas, to plan the project. 

EDI was approached with the design requirements for the treatment basin. It  evaluated the facility’s characteristics and product options for the design—an aeration tank that holds 150,000 gal. 

Additionally, the design had to be created with the goal of introducing a sufficient amount of oxygen to meet the biological treatment needs of the process wastewater when the brewery operates at full capacity.

Evalutating Options

“Given the relatively high organic loading of the brewing process flows, the use of a [standard] 9-in.-diameter disc product was perceived to provide low value to the customer,” said EDI Project Manager Darin Starr.

That configuration would have yielded only adequate standard oxygen transfer efficiency performance and would require operating the aeration system in the upper range of its capacity. This would have required installing the maximum number of diffusers in the basin—equivalent to floor coverage of 35%. Because product geometry limited the ability to increase the number of installable disc diffuser units, this design would not offer the facility an optimal operating system in terms of aeration efficiency or turn-up capacity, should future plant loading need to increase.

Given the needs of the aeration design, EDI recommended its StreamLine diffuser. Its geometry allows for higher installable diffuser densities—equal to 50% floor coverage—and operating efficiencies greater than that of the 9-in. disc diffuser. The StreamLine diffuser allowed the aeration system to meet the plant’s initial performance objectives while providing the flexibility to increase the process capacity of the treatment system.

“No other diffusers were considered for this project, given the success we have had with EDI’s products in other plants,” Buttles said. “Our company has had very good results using EDI on other projects, and their fine-bubble diffusers work well with our MBR systems. Plus, they were within our budget.”

Meeting Performance Needs

The operating performance of the StreamLine diffuser system is greater than what can be achieved by a disc diffuser. With more than 70% more diffuser active membrane area, the brewery now has the capacity to significantly increase production with minimal changes to the operation of the wastewater treatment plant.

“EDI’s service, pricing and product are very good,” Buttles said. “Their systems seem to run very well when installed properly. We are very happy with the results.”

The entire build took nine months. Of that, four days were spent installing the StreamLine diffuser aeration system. The total project budget for the plant was $1.2 million, with about $30,000 of that allocated to the aeration elements and installation.

About the author

expand_less