In order to maintain treatment operations while the outfall was replaced, Park Construction needed to set up a temporary sewer bypass system. |
In order to maintain treatment operations while the outfall was replaced, Park Construction needed to set up a temporary sewer bypass system. The project included 1,800 feet of 18-inch HDPE discharge pipe and a short, 12-inch HDPE discharge line into an 18-inch manifold. On any given day, the flow in the outfall line ranged from less than 1,000 gallons per minute (GPM) to more than 5,300 GPM. Circumventing the line and handling this broad range of flow would require specific pump technology that neither Park Construction nor the city of Raleigh had on hand.
As is often the case for specific construction projects that call for a temporary solution, it didn’t make sense to purchase the necessary pumps for the short term. So Ken Malonson, vice president at Park Construction, contacted a local pump rental provider that recommended two different pumps to address the needs of the bypass project. Unfortunately for Park and the city of Raleigh, the rental company’s North Carolina division closed before the job could be completed. This caused some short-term panic for the project team, but then Malonson turned to Xylem and their pump rental and sales branch in downtown Raleigh.
EXPERTS BRINGING IN EXPERTS
When Malonson contacted Xylem to discuss the project challenges with the flow and the urgency, Xylem engineers were able to assess the bypass project and recommend the ideal solution for the job. Park Construction ended up renting one of Godwin’s Dri-Prime NC350 pumps. The NC350 is a powerful yet portable high-efficiency pump with flow capabilities to 6,530 GPM, which is ideal for sewage, fibrous material, and general dewatering applications. The 16-inch pump was available immediately and became the primary pump of the bypass system, which handled the project’s incredibly varied flow. The sewer bypass project took one month, and the NC350 ran nearly 24/7 while installed onsite. With its wide range of flows, the NC350 was able to handle low flows at night as well as higher flows during the day by increasing and decreasing speed. “Xylem was right there for us,” Malonson said. “They took over the job and replaced the pumps. We never missed a beat.”
SAVING TIME AND MONEY
The rental of the Godwin Dri-Prime NC350 pump turned out to be an ideal solution for Park Construction and the city of Raleigh. What they didn’t expect were the cost savings achieved by using the Godwin pump.