World’s Largest Organic Waste Digester
The City of Perris has partnered with its waste hauler, CR&R to create the largest organic—waste eating machine in the world, so large it consumes 335,000 tons/year of organic waste and convert it to 260,000 tons of fertilizer and enough renewable natural gas (RNG) to displace four million gallons of diesel fuel.
Using the Eisenmann “mixed plug—flow anaerobic digestion” technology, CR&R can produce biogas from diverse organic waste sources. Once produced, the “raw biogas” – approximately 60% methane and 40% carbon dioxide – is refined using Greenlane Biogas technology. This process involves the removal of CO2, moisture and other impurities to produce pipeline-quality “renewable natural gas” (RNG). The 260,000 tons/year of liquid and solid material (“digestate”) that remains after gas extraction will be sold as a nutrient-rich natural fertilizer.
Project Partners
- CR&R Waste and Recycling Services
- J.R. Miller and Associates W M Lyles Co.
The project’s first of four phases began construction in the summer of 2014, with each phase designed to process 83,600 tons/year. 3,000 tons/day of incoming material is now combined with the SoCalGas project. CR&R currently uses carbon-negative RNG for all 900 waste and recycling collection vehicles!
Octaform Advantages
Cost Savings
Octaform’s solution provided decreased total costs compared to traditional methods involving concrete and polyurethane applied membrane coatings. This cost efficiency was instrumental in keeping the project within budget.
Construction Effieciency
Octaform’s system significantly reduced construction time and labor requirements. The ease of installation contributed to a streamlined construction process, saving valuable time and resources.
Built-In Insulation
Octaform’s system incorporated insulation directly into the structure. This ensured optimal thermal performance, with the thermal mass of concrete on the interior of the structure and insulation on the exterior, reducing operating costs.
Simplified Maintenance
The durability of Octaform’s tank interior was a crucial factor. The system resists corrosion and requires no mid-life servicing or re-coating, further reducing long-term maintenance costs.
Corrosion Resistance
Octaform’s PVC stay-in-place forming system offered superior corrosion resistance compared to traditional concrete and membrane systems. This durability ensures a longer service life for the infrastructure.
CR&R Waste and Recycling Services
CR&R Incorporated is committed to improving the environment in which we all live in by providing efficient, effective and cutting edge solid waste and recycling services which not only reduce the impact on our world but also offer sustainable solutions to our most pressing environmental challenges.
J.R. Miller and Associates W M Lyles Co.
Based in Fresno, J.R. Miller and Associates W M Lyles Co. specializes in Water and Wastewater Energy and Environmental construction projects throughout the State of California.
“It’s exciting to see California’s climate change investments come to fruition… The ability of anaerobic digesters to connect to the pipeline distribution system is a key component of making many of these projects happen.”
