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Feature Story:

Wastewater Treatment Plant 3 Ribbon Cutting Ceremony

Wastewater Treatment Plant 3 Ribbon Cutting Ceremony
The City of Bakersfield’s single largest Capital Improvement Project in the City’s history, the expansion and upgrade of Wastewater Treatment Plant 3, was unveiled on June 8th. 2010 with an official ribbon cutting ceremony at 6901 McCutchen Road.  Funding for the upgrade included $234 million in bonds.  The upgrade will increase treatment capacity from 16 million gallons per day to 32 million gallons per day.

The expansion of the City of Bakersfield’s Wastewater Treatment Plant 3 involved planning, design and construction to meet increasing wastewater flow and more stringent regulatory requirements.  In 2004, Parsons Water and Infrastructure was hired to prepare a master plan for the plant expansion and design of Bakersfield’s Wastewater Treatment Plant 3.  Construction of the project began on September 17, 2007 with Keiwit Pacific Company as the general contractor and Jacobs Engineering providing construction management services.  

Download Wastewater Treatment Plant Brochure

Highlights of the expansion include:
  • Plant-wide odor control system that includes foul air ducting, blowers and two odor removal bio-filters
  • New septage and grease-receiving station.
  • New cogeneration system that uses digester gas from the grease receiving station to generate electrical power.
  • New 2 million gallons per day capacity tertiary treatment, including filtration, disinfection and a reclaimed water storage reservoir and pump station.  This system will reuse treated water to provide water for irrigation for the landscaping of the wastewater treatment plant and the City of Bakersfield’s future Sports Village.
  • A new headworks that includes facilities for screening the plant’s influent wastewater, pumping the wastewater to two vortex-type grit removal tanks, and washing and dewatering the collected screenings and grit, as well as new structures for distributing the flow to the primary clarifiers.
  • Four new primary clarifiers to be converted from the existing four secondary clarifiers to work in conjunction with four existing primary clarifiers. Secondary treatment includes a nitrogen removal process necessary to protect the groundwater.
  • Ten new aeration tanks and four new secondary clarifiers, together with one return and one waste activated sludge pumping system for biochemical oxygen demand and nitrogen removal. 
  • Two dissolved air floatation units to thicken secondary sludge.
  • New administration, laboratory, operations and maintenance buildings to support the upgraded and expanded plant.

Model of Wastewater Treatment PlantIn addition, the City of Bakersfield will receive $3,040,700 from the American Recovery and Reinvestment Act to construct a photovoltaic solar energy system at Wastewater Treatment Plant 3 to help offset future electrical costs. 

The City of Bakersfield’s Wastewater Treatment Plant No. 3’s expansion will not only serve the citizens of Bakersfield for many years to come, but will do so in an efficient and environmentally friendly manner.

(photo right: Model of Wastewater Treatment Plant)

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