Biological nutrient removal system to improve VA wastewater plant operations
Hopewell Regional Wastewater Treatment Facility in Hopewell, Va., will receive a new technology that couples a moving bed bioreactor with a high-rate dissolved air flotation system to help bring its total nitrogen waste load into compliance with local regulations.
OKLAHOMA CITY, OK, Sept. 12, 2014 -- Hopewell Regional Wastewater Treatment Facility (HRWTF), a 27-million-gallons-per-day (MGD) utility located in the city of Hopewell, Va., will soon receive a new technology that couples a moving bed bioreactor (MBBR) with a high-rate dissolved air flotation (DAF) system to help bring its total nitrogen (TN) waste load into compliance with local regulations.
Provided by World Water Works, Inc. (WWW), a designer and manufacturer of wastewater treatment solutions, the Ideal MBBR-DAF™ system was selected through a design-build public-private partnership (PPP) between the city of Hopewell, and the team of WWW, HDR Engineering (HDR), PC Construction (PC), and Heyward Inc.
HRWTF has a unique situation where the source of more than 80 percent of its wastewater comes from industry -- some of which contains known toxins to ammonia oxidizing bacteria (AOBs) and nitrite oxidizing bacteria (NOBs). AOBs and NOBs are responsible for the traditional nitrification/denitrification process of removing nitrogen from wastewater. To solve the problem, HRWTF conducted an extensive evaluation and pilot treatability study of various technologies including WWW's Ideal MBBR-DAF system.
After over six months of pilot testing, it was clear that the Ideal MBBR-DAF system led the field by consistently bringing TN levels of the facility to the future targets while being very robust against the harder-to-degrade industrial wastewater sources being treated. Further, WWW and HDR developed a creative design to reduce capex and provide a robust solution.
HRWTF evaluated the PPP thoroughly through independent parties and found that it not only offered the ability to implement the project faster but also at a substantially lower cost than the traditional design-bid-build path. "This PPP is a win-win-win," said Daniel Dair, WWW technical manager. "HRWTF gets a state-of-the-art system with a binding performance guarantee from one source; the price is not only lower than anticipated, it is also guaranteed; and the local waterways and Chesapeake Bay win with better water quality sooner."
The project is in full swing and is expected to be completed by 2016.
About World Water Works, Inc.
World Water Works is a leading, award-winning manufacturer of specialized process and wastewater treatment technologies. With a focus on cost effective performance, flexibility, and durability, the company works alongside clients to create the most appropriate treatment solutions. Since its founding in 1998, the company’s technology has cleaned more than 13 trillion gallons of water, facilitated the reuse of more than 2 trillion gallons and recovered millions of pounds of resources. For more information, visit www.WorldWaterWorks.com.
About Hopewell Regional Wastewater Treatment Facility
HRWTF is a secondary wastewater treatment plant that currently treats an annual average flow of approximately 27 MGD of combined wastewater from local industries and domestic sources. In 1977 when the plant started operation, the facility was designed to treat for BOD and the removal of TSS and employed the use of Pure Oxygen. Since then, it has achieved its treatment goals for BOD/TSS. For more information, click here.