499 

 

Removal of high strength beverage waste from the influent flow and Redirected to anaerobic digestion 
to treat the waste more efficiently 

Utilization of equipment timers for peak shaving 

Streamline operations to increase efficiency 

Performance Measures & Results 

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KWH used per 1000 lbs BOD removed: The 2015 annual average was 459 KWH per 1000 lbs BOD 
removed this value has steadily decrease over the last 15 years. 

-

 

Discuss energy usage with Staff regularly : The staff is very familiar with the energy usage and 
works very hard to keep the facility running efficiently 

-

 

Lbs of BOD diverted from the Influent flow into anaerobic digestion: More than 1200 lbs of BOD 
per day have been diverted from aeration and into the anaerobic digesters over the past 12 
months. 

 

 

ENERGY GENERATION & RECOVERY 

 

Indication of management commitment (e.g., standard operating procedures; board/executive 
management renewable energy conversion policy, including quantitative goals developed and 
shared with stakeholders)   

 

Internal energy sources evaluated (e.g., biogas, hydropower, heat in wastewater), and/or 
renewable energy sources evaluated on an ongoing basis (e.g., solar, wind, co-digestion)  

 

Recovery of digester gas in a combined heat and power (CHP) system, and boilers in place (for 
process and building heating)   

 

Conversion of digester biogas to electricity and heat, and/or transportation fuel Yes   

 

Solar panels, wind turbines, heat recovery, in conduit hydro, and/or hydroelectric power 
generation systems installed  

Heat recovery from the facility’s effluent is used to heat and cool multiple buildings 

Co-digestion with outside wastes (FOG, Dairy, Brewery, and Food Processing Wastes) 

Performance Measures & Results 

-

 

Produce  > 85% of electricity used onsite annually: The system has produced on average 89% of 
the electricity used onsite since 2012. Net-Zero has been accomplished 13 of the 49 months of 
operation. 

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Produce enough biogas to operate the 180KW CHP unit at full speed 100% of the time: The 
digesters produced 99,780 cubic ft of biogas per day in 2015.  The CHP unit needs 70,000 cubic 
ft/day. 

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Maximize biogas utilization and effluent water heating/cooling to offset Natural Gas usage : The 
facility has offset over 80% of their natural gas needs by utilizing onsite resources.