Freese and Nichols has assisted the City of Fort Worth with multiple studies and improvements at the Village Creek Water Reclamation Facility (VCWRF).
Energy Conservation Program
Like other wastewater plants, VCWRF uses a large amount of electrical energy for aeration and pumping. To address this costly issue, the City used a Performance Contract with another a consultant to make energy-saving improvements at the plant. Freese and Nichols' role was to design two of the nine Facility Improvement Measures (FIMs) implemented at the 166-MGD plant and provide construction services for several others.
FIM 5 retrofitted the aeration basins with anoxic zones, which remove roughly 30 percent of the incoming COD before the wastewater reaches the aerated portion of the basins. FIM 3A added an anaerobic co-digestion facility to receive, blend, and meter trucked high-strength wastes into six of the plant’s digesters. The waste addition has doubled gas production from the co-digesters and moved the plant closer to energy neutrality.
Scum Screening Project
As a follow-up to the energy conservation project, Freese and Nichols designed modifications to the existing scum tanks, with external pumps, a scum screen, and controls to reclaim “clean” scum for co-digestion. In addition to increasing energy recovery, the project has reduced odors, reduced O&M, and saved $400,000 per year in scum haul-away costs.
Biosolids Master Plan
Freese and Nichols also helped develop a biosolids master plan to select the technology(s) and an implementation plan to produce Class A, “Exceptional Quality” biosolids through the year 2040. Class A biosolids production is anticipated to address current challenges, including regulatory uncertainty, odor-related public concerns, increasing haul distances to land-application sites, and the desire to reduce operating expenses.
City of Fort Worth
Construction Services, Mechanical, Electrical, Plumbing, Permitting, Structural, Water/Wastewater Treatment and Reuse