Chevron Energy Solutions – City of Rialto Wastewater Treatment Plant

The City of Rialto Waste Water Treatment Plant project consisted of:

  • Provided assessment of performance and profitability on general contractor during the construction and upgrade of an existing city treatment plant for the design and installation of alternative energy equipment, based on ROI and estimate benchmarks.
  • Provided construction advisory services and construction management services.
  • Project featured: 900-kilowatt fuel cell power plant; Grease receiving station; Updated digester equipment; New automated controls system; High-efficiency boiler; Clean, quiet emission-free power generation; New revenue stream from “tipping fees” paid by grease hauling companies; Effective, environmentally sensitive FOG disposal alternative; and reduction in landfill waste and greenhouse gas emissions.

Project Highlights:

  • The City of Rialto selected Chevron Energy Solutions (CES) to engineer and construct a system to transform wastewater sludge and kitchen grease from local restaurants into clean, renewable power at its wastewater treatment plant. CES’s innovative design incorporates energy efficiency and renewable power and provides an environmentally beneficial solution for the disposal of fats, oils and grease (FOG).
  • The new system includes a 900-kilowatt fuel cell power plant to provide 24-hour baseload power to the facility, a FOG receiving station, repairs to the current digester equipment, a new automated controls system, and a high-efficiency boiler.
  • The fuel cell power plant consists of three 300-kilowatt units. The fuel cells convert methane to hydrogen which in turn generates electricity through an electrochemical process, without combustion or pollution. The methane (or biogas) is generated on-site in the wastewater sludge digester tank. FOG collected at the receiving station is added to the digester to increase biogas production. Waste heat from the fuel cells is used to warm the wastewater sludge inside the digester to stimulate optimal methane production.
  • The new system will decrease the city’s energy costs by about $800,000 a year, increase municipal revenues, reduce landfill waste, and lower greenhouse gas emissions by 11 million pounds of carbon dioxide annually, equivalent to removing 1,080 cars from the road each year.

Owner and Contact Information:

Chevron Energy Solutions, Greg Coxsom, Vice President

Beezley Project Representative/Role:

Various

General Contractor:

(Design-Build) Chevron Energy Solutions

Dollar Value:

$15.1  Million

Construction Dates:

2007 – 2009