Anaerobic Digestion • Biogas • Composting • Food Waste • Manure • Renewable Natural Gas
19th Annual Conference
BioCycle REFOR17

RENEWABLE ENERGY FROM ORGANICS RECYCLING

October 28, 29, 30, 31, 2019
Madison, Wisconsin
Madison Marriott West

Agenda/Events Pages: Monday Workshop | Tuesday & Wednesday Conference Sessions | Thursday Site Tours
Event Schedule | Think Tank Session: Biogas In 2020 – The State Of Play | Networking Events
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Site Tours

Thursday, October 31, 2019

Updated 6.20

All-Day Site Tours of biogas facilities.

 

Lunch included. Preregistration required.
Bus will stop at Dane County Regional Airport before returning to the Madison Marriott West.

 

GL Dairy Biogas Project
Middleton, Wisconsin
GL Dairy Biogas Project

Gundersen Health System and Dane County in Wisconsin have partnered with three farm families in Dane County — Blue Star Dairy, Hensen Brothers Farm and Ziegler Farm — on the GL Dairy Biogas Project. The anaerobic digestion facility represents about 38 percent of Gundersen's renewable energy production. Manure from a total of more than 2,000 cows is codigested with source separated food waste, some of which is preprocessed in a Scott Turbo Separator depackaging system. Additional details:
• Operation generates about 16 million kilowatt hours/year of electricity that is added to the local grid
• Digested fiber is composted on-site in windrows managed with a Backhus turner.
• Nutrient concentration system to treat centrate from solids separation

 

Statz B
Sun Prairie, Wisconsin
Statz B

Statz Bros. installed an anaerobic digester in 2009 to treat manure from about 1,500 cows. It expanded by purchasing a nearby dairy, where it has about 2,500 cows. Statz B, the second dairy, installed a digester in 2015. Both digesters utilize a DVO Linear VortexTM system. Separated digested solids from both digesters are used for bedding cows. Currently, Statz B is installing a biogas upgrading system to produce renewable natural gas (RNG). Additional details:
• The farms produce 350,000 pounds of milk a day and an average of 10.5 million pounds in a month
• Statz B has a commercialized nitrogen and sulfur capture system on the back end of its digester
• Treated effluent is used as a liquid fertilizer, reducing commercial fertilizer costs

 

Dane County Landfill RNG Facility
Madison, Wisconsin
Dane County Landfill RNG Facility

In May 2019, Dane County started injecting renewable natural gas (RNG) into the interstate pipeline, completing development of its landfill biogas project. The RNG facility has a biogas offloading station to allow other biogas producers, like manure digesters, to inject their gas into the pipeline. Dane County notes this facility is the first in the nation to be able to receive biogas from multiple off-site locations and connect that renewable gas with RNG gas stations locally and across the nation. Additional details:
• Landfill biogas facility will displace 3 million gallons of fossil fuels in the first year of operation, growing to 4 million gallons/year in future years
• Kwik Trip is one of the primary dispensers of the renewable vehicle fuel generated by the facility
• BIOFerm's 2-stage Pressure Swing Adsorption system provides biogas upgrading