Case Study: Michigan State University - Anaergia Inc Study: Michigan State University Renewable...
Transcript of Case Study: Michigan State University - Anaergia Inc Study: Michigan State University Renewable...
Case Study: Michigan State UniversityRenewable energy generation from food waste, biosolids and manure
The Michigan State University Facility will generate 450kW of renewable electricity, when complete in 2013, from campus cafeteria waste, food processing waste, biosolids and manure to replace coal power on the main campus.
Energy Generation from organic wastes
Substrate Recept ion
Food waste, biosolids and manure will be delivered to
separate in-ground concrete reception pits with integrated
mixers via trucks. Food substrates will be sent to a
pasteurization system prior to being sent to the mixing
tank with the manure and biosolids.
Renewable Energy Produc t ion
The biogas produced will be dried and purified prior to
being converted into electricity using CHP systems to
produce 460kW of base load power. The electricity will be
wheeled through the local utility fto the main campus.
Anaerobic Digest ion
The facility utilizes a single tank digester system equiped
with hydraulic submersible motors and service boxes to
ensure for improved safety, efficiency and ease of
maintenance.
Fer t i l izer & Bedding Produc t ion
Digestate will through a filter screw press separator that
separates the fiber from the liquid streams. The fiber will be
used for bedding or fertilizer products while the filtrate is
pumped to a storage tank with 9 months storage for use by
local farms.
www.anaergia.com
Projec t G oal
Inputs Renewable Outputs
Pro cess D escription
Anaergia was awarded the design and construction of an
anaerobic digestion system on the Michigan State
University Campus in East Lansing Michigan. The university
is one of the largest in the United States with over 48,000
students and 5,000 faculty members.
The anaerobic digestion system, once complete in 2013, will
convert over 16,800 tons per year of food waste, waste
activated sludge and animal manures into renewable
energy. The clean energy is used on the main campus to
replace coal power.
Revenues are also generated for the university through
tipping fees for accepting waste from local food processors
and through the sale of fertilizer and bedding products.
Cafeteria Waste
Food Processing Waste
Waste Activated Sludge (WAS)
Miscellaneous Waste
790 gallons per day
2,560 gallons per day
13,100 gallons per day
1,640 gallons per day
Renewable Electricity
Renewable Heat
Fertilizer
460 kW
540 kW
Liquid
Manure
Food Processing Waste
Anaerobic Digestion
CHP ElectricityBiogasTreatment
Biogas
CampusWastewater
Fertilizer Sales Crop Spreading
Digestate
Cafeteria Waste