Case Study: Subdivision requires low-profile treatment system

Case Study: Subdivision requires low-profile treatment system
A cluster of four Fuji Clean USA commercial CEN21 denitrification systems provided a lightweight, low-profile and maneuverable solution for a difficult site.

During his design of the Shepherd’s Cove subdivision, a new housing development along the Potomac River in West Virginia, engineer Jim Hutzell had to find a commercial treatment system capable of handling 6,200 gpd that could meet Chesapeake Bay effluent standards (BOD 5 mg/L; TSS 10 mg/L; and TN 18 mg/L), but was also lightweight, low-profile and maneuverable for placement in a difficult site. Hutzell also wanted a cost-effective technology with a solid track record that used minimal power. 

Hutzell’s final design was a cluster of four Fuji Clean USA commercial CEN21 denitrification systems, each capable of treating 1,680 gpd. He based his decision on treatment quality, small footprint, profile and weight, low total cost and energy efficiency. The CEN21 produced NSF 40/245 numbers of BOD 5 mg/L, TSS 6 mg/L and TN 10 mg/L, accepting straight septic influent. The dimensions of the CEN21 (15 feet, 4 inches by 6 feet, 6 inches by 7 feet, 3 inches) and weight of 1,543 pounds overcame the site access hurdle. And at 10 cents per kWh, Hutzell calculated a total power cost of $1.60 per day.  

The system was installed and scheduled for commission in March 2015. Each CEN21 unit will be sequentially brought online as flow from the growing housing development mandates. 207/406-2927;


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