Digester Projects
First Phase Testing: Successfully demonstrated the scalability of the system from the 4-liter laboratory reactors.
Second Phase Testing: Evaluation of a variety of commercially available equipment and components (material handling
systems, processing equipment, circulation system, drain system valves, pumps and piping).
Second Phase Testing: Evaluation of a variety of commercially available equipment and components (material handling
systems, processing equipment, circulation system, drain system valves, pumps and piping).
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Current Projects
APS Digester Commercial Demonstration System
In July 2004, the California Energy Commission issued a grant for $995,000 to demonstrate, validate performance and
commercialize the APS anaerobic digester technology.
A construction contract and research agreement with UC Davis was issued to OPS. The contract directed OPS to
construct a 50,000-gallon total reactor volume, APS commercial demonstration digester system to be located on the UC
Davis campus at the current OPS pilot digester site.
The designs and techniques incorporated in the commercial APS digester system presently under construction at UC
Davis follows commercially proven, industry standards. There are no dependencies upon unproven technological
developments to successfully achieve the anticipated system operation. The complete system is constructed using
commercially available components.
Design allowances have been incorporated for the option of future demonstration of various other technologies that will
enhance the APS digester system. Some of the planned technologies include a reformer for biohydrogen production,
compressed natural gas system (CNG) and a non-combusting fuel cell power generator. Additionally, a small liquefier for
the production of liquid hydrogen (LH2) and/or liquefied natural gas (LNG) may be added to the system.
The OPS research agreement specifies that OPS will have the first rights to all intellectual property developed during the
execution of the agreement. Currently OPS and Dr. Zhang, the primary research scientist, have filed one patent
disclosure and have a second potential patent disclosure in process.
APS Digester Commercial Demonstration System
In July 2004, the California Energy Commission issued a grant for $995,000 to demonstrate, validate performance and
commercialize the APS anaerobic digester technology.
A construction contract and research agreement with UC Davis was issued to OPS. The contract directed OPS to
construct a 50,000-gallon total reactor volume, APS commercial demonstration digester system to be located on the UC
Davis campus at the current OPS pilot digester site.
The designs and techniques incorporated in the commercial APS digester system presently under construction at UC
Davis follows commercially proven, industry standards. There are no dependencies upon unproven technological
developments to successfully achieve the anticipated system operation. The complete system is constructed using
commercially available components.
Design allowances have been incorporated for the option of future demonstration of various other technologies that will
enhance the APS digester system. Some of the planned technologies include a reformer for biohydrogen production,
compressed natural gas system (CNG) and a non-combusting fuel cell power generator. Additionally, a small liquefier for
the production of liquid hydrogen (LH2) and/or liquefied natural gas (LNG) may be added to the system.
The OPS research agreement specifies that OPS will have the first rights to all intellectual property developed during the
execution of the agreement. Currently OPS and Dr. Zhang, the primary research scientist, have filed one patent
disclosure and have a second potential patent disclosure in process.
| ANAEROBIC PHASED SOLIDS (APS) DIGESTOR SYSTEMS |
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