Proceedings

New Technology for Converting Biosolids to an Economical, Renewable Fuel is Starting up

Kearney, R., Bolin, K., and Dooley, B., EnerTech Environmental, Inc.

(free)

In response to growing opposition to agricultural land application of biosolids, several Southern California wastewater agencies supported the development of a regional facility to process biosolids into a renewable fuel. The Rialto, California facility incorporating EnerTech Environmental’s patented SlurryCarb™ technology has been described in previous papers.

Construction of the facility is nearing completion and EnerTech will begin start-up testing in October 2008. Within the past twelve months, the mass and energy balance for the final design of the Rialto
facility shows it will produce a renewable fuel containing almost twice as much energy value as required to produce it. In addition, the carbon dioxide emissions from this facility will be about 65% less than a thermal dryer of comparable size, while the E-Fuel produced will displace about 88,000 tons per year of carbon dioxide from coal combustion.

This paper will briefly describe the SlurryCarb™ process, the latest Rialto mass and energy balance1, a simplified Rialto carbon emission analysis, the latest Rialto construction status, and the Rialto start-up schedule.

KEY WORDS
Biosolids, Carbon Dioxide, E-Fuel, Global Warming Gases, Renewable Fuel, SlurryCarb™

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