regional digester manure and food processing waste
TRANSCRIPT
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!
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