South Burlington, Vt. – PC Construction has been awarded two major projects to bring advanced wastewater treatment technologies to the Washington, DC and the Atlanta metropolitan areas. The projects help strengthen the company’s position as one of the nation’s leading builders of wastewater treatment facilities.

Both projects will lead to significant milestones for PC Construction and its clients.

Upon completion, the DC Water Blue Plains Advanced Wastewater Treatment Plant will be the largest DEMON® facility in the world. And the construction of the Shakerag Water Reclamation Facility in Georgia positions PC Construction as one of the top membrane contractors in the country.

DC Water: Blue Plains Advanced Wastewater Treatment Plant

PC Construction is constructing a $60 million filtrate treatment facility at the DC Water Blue Plains Advanced Wastewater Treatment Plant in Washington, DC. One of the highlights of the project is the implementation of the DEMON® process, a method used to eliminate nitrogen from wastewater.

DEMON®, which is an acronym for Deammonification, employs specialized natural ammonia-oxidizing bacteria to metabolize and remove nitrogen from the recycle stream coming off the plant’s sludge dewatering facilities. The outcome is significant energy savings – 50 percent for nitrification, 100 percent on carbon source – when compared to traditional nitrogen removal processes. 

Construction at the new treatment plant follows an extensive pilot program to ensure environmental and cost benefits of implementing the process on this scale. Savings include reductions in energy demand by more than 70 percent and the elimination of costly supplemental chemicals used in the conventional approach. 

Identified as one the best ways to reduce energy and chemicals usage in a filtration process, DEMON® has been adopted by more than 20 facilities in Europe and has started to gain traction in the United States.

“We are excited to be part of this innovative project and to continue to work with DC Water to help protect the Chesapeake Bay,” said Jeff Garner, senior vice president of PC Construction. “Once implemented, the DEMON® process will significantly reduce oxygen input and require no chemical use, making it a cost-effective technology that allows for substantial saving on operating costs.”

Shakerag Water Reclamation Facility

Commissioned by the Forsyth County Water and Sewer Department, construction of the Shakerag Water Reclamation Facility in Suwanee, Georgia, helps the department meet its growing need for increased sewer capacity in the greater Atlanta metropolitan area.

Construction of the $28 million project includes a 1.25 mgd membrane filtration facility with packaged headworks facility, biological basins and membrane tanks, operations and membrane equipment building, chemical facility, dewatering building, finished water facility and plant drain pump station.

A key feature of the Shakerag Facility will be the advanced membrane bioreactor (MBR), designed to increase treatment performance while reducing chemical use. Similar to the technology use to purify drinking water, the MBR process puts better quality water back into the environment.

“The membrane process is still a relatively new water treatment process and, while more expensive to construct than conventional methods, it produces a cleaner effluent,” said Mike Joseph, project manager for PC Construction. “We are pleased to help implement this leading-edge technology to meet Forsyth County’s population growth while helping to preserve the environment.”

In the past 15 years, PC Construction has completed over $750 million worth of work in Metro Atlanta and numerous membrane systems throughout the United States, making it one of the top membrane contractors in the country. Construction of the Shakerag Water Reclamation Facility is expected to be complete in 2016. 

About PC Construction

PC Construction offers general contracting, construction management and design-build services to private companies and public entities of all sizes. The company manages projects up and down the East Coast and in the southeastern United States from its corporate headquarters in South Burlington, Vermont and regional offices in Portland, Maine and North Carolina. A construction industry leader for 56 years, PC Construction (formerly Pizzagalli Construction) is guided to success by its more than 900 dedicated employee-owners.