Regional Digester Manure and Food Processing Waste

Regional Digester Manure and Food Processing Waste

Concentrated Animal Feeding Operations

Manure and “Deads” fromConcentrated Animal Feeding Operations

Food Processing Waste

Regional Digester Combining Manure and Food Processing

Waste to Generate Energy

Biogas Production for various Feedstock

Facility Location

Regional Digester Mission

• To build and manage energy plants in rural locations fueled by “Ag BioSolids” (ABS) and high-energy substrates utilizing integrated leading edge technologies to generate renewable sources of biogas (natural gas) while extending benefits to local communities through manure and waste management solutions and local economic development. 

The Regional Digester Processconverting manure and food processing waste into energy

The Regional Digester Process1. Primary Process Building and Mixing tanks (plus blood

tank, grease tank, water tank)

2. Anaerobic ProcessAcid Tanks (mesophillic)

Acid/Methane Tank (thermophillic)

Methane Tanks (thermophillic)

3. Separation Building Primary/Secondary Separation (screw press)

Reheating and recycle loops

CSNRC (enclosed DAF technology)

4. SBR

5. Effluent Storage Pond

Regional Digester Flow Diagram

Residuals forDigestion

Flash MixDigesters

Bio-Gas

Solid and Liquid Effluent

Bedding SolidsAnd Fertilizer

Separator Effluent

Liquid Fertilizer(seasonal based)

Dissolved Air Floatation

DAF Solids returnedFor Dilution and

Digestion

Sequencing BatchReactor

Irrigation

To City per IPP

Recycle to Primary

The Regional Digester Process

• Primary Process Building

Trucks off-load residual to site by

dumping or pumping

Mix

Liquid Food Residuals

Rendering and Process Inedible

Recycle Effluent

CSNRC FloatAcid

Phase

The Regional Digester Process

Anaerobic ProcessPrimary Mix

Influent

Methane Digestion X2

Acid Phase

Acid Mix

The Regional Digester Process

Methane Tanks (thermophillic)

Thermophillic DigesterTotal Mix Condition

Primary Influent from A/M

Primary Separation

Return

Return Heat and Floc. / Metal

Salt

Bio-Gas

Secondary Effluent

Primary Effluent

The Regional Digester Process

• Separation Building

Primary InfluentSep.

Return to digestionWith heat and M

Salt

Secondary Influent

Sep. CSNRC

Anaerobic FloatCSNRC “CLEAR Run” to SBR

The Regional Digester ProcessPrimary separation (screw press) with recycle back to

Digester

Primary and Secondary Separation

The Regional Digester ProcessSecondary Separation (screw presses)

The Regional Digester ProcessThe CSNRC (Closed System Nutrient Recovery Cell)

The Regional Digester ProcessThe Sequence Batch Reactor (SBR)

The Regional Digester ProcessThe Sequence Batch Reactor (SBR)

mix/fill react/fill react settle decant/ waste sludge

The Regional Digester ProcessThe Pond

Regional Digester Benefits

• Improving the Environment• Benefiting “local” communities• Providing economic development • Building numerous Partnerships

Regional Digester Benefits• Improving the Environment

– Reduce Carbon footprint– Reduced Hydrogen Sulfide emissions– Reduce pollution generated by CAFOs– Converting waste to energy– Generate recurring revenue as a renewable,

clean, domestic energy source.

Improving theEnvironment

Reduce pollution generated by CAFOs-Odors-proper nutrient loading on soils (P & NH3-N)-prevent raw manure runoff into waterways

Regional Digester Benefits

• Benefiting local communities

– Creating jobs locally (about 60 employees)– Improving the tax base (profitable business)– Helping the local municipality– Helping the local farmer

• Local farmers use biosolids• Local farmers use clean irrigation water• Local farmers improve the environment

Regional Digester Benefits• Providing local economic development

– Creating Partnerships (farmers, industries, municipalities)

– Providing local jobs– Helping local industries and farmers with their

waste management solutions– Helping industries and farmers prevent

environmental issues– Helping industry save operating costs

• Preventing landfill disposal costs

Regional Digester

Regional Digester Benefits

• Building Partnerships– Beneficial relationship with local community– Beneficial relationship with local WWTP

• Help local WWTP come into compliance• Take high strength waste away from WWTP• Provide low NH3-N dilution water to WWTP

– Partnership with local farmers (sharing resources)

– Beneficial partnership with local industry– Relationship with State regulatory agencies– Relationship with large utilities (pipeline)

We will always need food!

We will always need energy!

We will always need to protect the environment!

A Regional Digester helps us MANAGE it properly!

Regional Digester ProjectAdditional Contact Information

• sheffandsonseng@aim.com cleanwaterman@comcast.net

Just a Couple of Water Guys

Brian Ross & Bernie Sheff

Questions ??

Additional Pictures

Local Farmers Improve the Environment

through Pollution Prevention

Pollution Prevention

• Turbidity• Nuisance algae and excessive weed growth• Bacterial slimes• Foam• Fish Kills• Sediment beds at or near outlets• Significant downstream/upstream changes• Stains on Side Slope

Common Indicators of Water Quality

Turbidity

Algae

Excessive Weed Growth

Algae Growth

Bacterial slimes

Foam

Preventing Discharges