The Challenges and Opportunities of Operating a Digester in aChanging Market

• Waste management service thatbegan in 2013.

• Operates one of nation’s largestindependently owned anaerobicdigester facilities.

• Background Information:

Types of Clients: Cheese manufacturers,ethanol producers, food and beverageprocessors.

Power Production: 3.2 MW (powers 3,000homes)

Gallons processed / day: 300,000

ABOUT GREENWHEY ENERGY

OUR PHILOSOPHY

• Built upon idea that waste management can be clean and sustainable.

• Three core principles:

• CLEANLINESS: We strive for cleanliness in our facility, in our operations, and in ourbusiness practices.

• SUSTAINABILITY: No longer can waste just be swept under the rug. Our model isbuilt upon harnessing and reusing the latent energy in food and beverage wastebyproducts.

• DISCRETION: Clients trust us to be an end source for their waste products. We takethis responsibility very seriously.

OUR PROCESS

AnaerobicDigestionAnaerobicDigestion

Wastewaterintake

Wastewaterintake

Cleanwater

discharge

Cleanwater

discharge

Biogasand

electricity

Biogasand

electricity

BiosolidsBiosolids

• State-of-the-art facility

• Designed by Ecolab, engineered bySymbiont.

• Key features:

• Fully enclosed, unlike majority ofanaerobic digestion facilities.

• Odor control system keeps odorsin check.

• Designed to cater to broad rangeof food and beverage producers.

VIRTUAL TOUR: OVERVIEW

• On-site intake capable of taking 60bulk loads of wastewater daily.

• Two loading bays.

• High speed pumps offload trucks in 15minutes.

VIRTUAL TOUR: INTAKE

• Fully equipped laboratory for testingand data documentation.

• We test:

• Incoming loads of material on setlist of parameters.

• Water in digesters to measurehealth of system.

• Effluent discharge for cleanlinessand compliance.

VIRTUAL TOUR: LABORATORY

• Plant operations controlled by aSCADA computer system.

• Operators onsite 24/7.

• Monitor tank levels, process flow,biogas production, and dischargequality.

VIRTUAL TOUR: CONTROL ROOM

• Facility built around two, 2.2 milliongallon bioreactors.

• Raw food and beverage processwastewater is pumped into the bottomof the tanks.

• “Digestate,” or effluent, flows over thetop and into a comprehensivewastewater treatment process.

VIRTUAL TOUR: PRODUCTION FLOOR

• Biogas produced in the bioreactors isused to power two Caterpillargenerators.

• They produce 3.2 MW of power,enough to power 3,000 homes.

• Heat from the units is used to heatbuilding and keep reactors warmthrough the winter.

VIRTUAL TOUR: ELECTRICITY PRODUCTION

• To clean discharge water, we operatetraditional wastewater treatmentequipment.

• Two DAF units, an MBBR reactor, anda solids separation system, removephosphorus and solids from wastewater.

• Treated water is discharged to thelocal municipality.

VIRTUAL TOUR: WASTEWATER TREATMENT

• Remaining byproduct is the solidsremoved from the dischargewastewater.

• These solids are condensed into ahigh grade fertilizer using a belt filterpress.

• This fertilizer is designated Class A, orsuitable for any home garden or farm.

• GreenWhey currently sells its fertilizerto local farmers.

VIRTUAL TOUR: BIOSOLIDS

• GreenWhey founders are starting anew company to manage off-spec foodand beverage consumer products.

• Company will utilize GreenWhey forliquid management and local recyclersfor packaging materials.

• Products to be managed:

• Soda cans and bottles.

• Beer cans and bottles.

• Dairy products.

• Any other liquid soluble organicwaste goods.

FUTURE PLANS

• Food industry wastewater contains largeamounts of chlorides.

• These resulted in new restrictions onlocal municipality.

• In response, we are installing anevaporator/drier system powered by ourown excess heat.

• It will:

• Vaporize 95% of liquid

• Leave salt concentrate that couldfind use as road de-icer.

• Make GreenWhey one of the onlyfacilities capable of handling high-chloride waste streams.

CHLORIDE MANAGEMENT

FURTHER INFORMATION

• You can find us online to learn more about our operation:

• Learn about our services and read our story at greenwheyenergy.com

• Follow our latest developments on Twitter and Facebook.

• Email us for more information at info@greenwheyenergy.com