Digester Gas Resource Recovery at Phoenix, Arizona

by Bert Sever, John Carollo Engineers, United States,
Paul Hendricks, John Carollo Engineers, United States,

Document Type: Proceeding Paper

Part of: Environmental Engineering


Until July 1986, the digester gas produced at this 150 million gallon per day facility, in excess of what was utilized for heating anaerobic digesters was flared. In 1983, a feasibility study concluded that scrubbing the gas to pipeline quality and selling it to a local gas utility was the best utilization of this resource. This alternative was superior to electrical power generation using engine-generators due to the relatively low electrical rates available to the treatment plant. A digester gas scrubbing system with a capacity of 3.0 million standard cubic feet per day was designed and began operation in July 1986 and has consistently produced gas that exceeds the quality requirements of the gas utilities involved.

Subject Headings: Anaerobic processes | Natural gas | Recycling | Feasibility studies | Electric power | Gas pipelines | Utilities | Power plants | Arizona | United States | Phoenix

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