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DENR/ Div. Of Pollution Prevention & DENR/ Div. Of Pollution Prevention & Environmental AssistanceEnvironmental Assistance
OverviewOverview
Technology in Composting Technology in Composting • Materials HandlingMaterials Handling• Biological Process OptimizationBiological Process Optimization• Odor ControlOdor Control
Capital CostCapital Cost• Increases with technologyIncreases with technology
Operational CostsOperational Costs• Decrease with technologyDecrease with technology
Footprint (Area Required)Footprint (Area Required)• Decreases with technology (usually)Decreases with technology (usually)
Aeration Through Porous Floor PlatesAeration Through Porous Floor Plates Composting Time: 2 - 3 WeeksComposting Time: 2 - 3 Weeks Curing Time: 2 MonthsCuring Time: 2 Months Durable Materials of ConstructionDurable Materials of Construction Equipment Needed: Front End LoaderEquipment Needed: Front End Loader Vector/Vermin Control Needed With Food Vector/Vermin Control Needed With Food
WastesWastes Capacities: 3 - 4 Days Food Waste + Capacities: 3 - 4 Days Food Waste +
Bulking Agent Per BinBulking Agent Per Bin
Aerated Compost Bins At Aerated Compost Bins At CaledoniaCaledonia
12 Bins - Two Rows of 6 Bins12 Bins - Two Rows of 6 Bins Construction Cost - $40,000Construction Cost - $40,000 Footprint - 50 SF per BinFootprint - 50 SF per Bin Capacity of Each Bin - 36 Barrels (35 - Capacity of Each Bin - 36 Barrels (35 -
gal.) of Food Scrapsgal.) of Food Scraps Blowers - 980 CFMBlowers - 980 CFM Aeration Plates - 2’ x 2’, $89 EachAeration Plates - 2’ x 2’, $89 Each Filling/Emptying - With BobcatFilling/Emptying - With Bobcat
Aerated Static PileAerated Static Pile
Aeration Provided By Mechanical BlowersAeration Provided By Mechanical Blowers Can Shorten Composting time to 3 - 5 Weeks Can Shorten Composting time to 3 - 5 Weeks
(followed by 30 days curing)(followed by 30 days curing)
Aerated Static PileAerated Static Pile
Better Suited to Larger Volumes (landscape Better Suited to Larger Volumes (landscape debris and food waste) debris and food waste)
May Not Be Suited to Wastes That Need May Not Be Suited to Wastes That Need Mixing During Composting, Like Food WastesMixing During Composting, Like Food Wastes
Difficult to Adjust Moisture Content During Difficult to Adjust Moisture Content During Composting If NeededComposting If Needed
Odor Control Difficult With Positive AerationOdor Control Difficult With Positive Aeration Less Land Area Than Windrows, Still Labor Less Land Area Than Windrows, Still Labor
Univ. of GeorgiaUniv. of Georgia Hyatt Regency, Hyatt Regency,
ChicagoChicago Vermont DECVermont DEC Univ. of South CarolinaUniv. of South Carolina Connecticut DEPConnecticut DEP Flushing Hospital, NYFlushing Hospital, NY Texas A&M UniversityTexas A&M University
23682368 Wright Environmental Tunnel SystemWright Environmental Tunnel System
• Paul Roth, Innovative Environmental Paul Roth, Innovative Environmental Systems Systems
(757)890-1354(757)890-1354 Green Mountain Technologies Earth TubGreen Mountain Technologies Earth Tub
• John DeRham, (802) 368-7291John DeRham, (802) 368-7291
SummarySummary
Factors To Consider In Selecting TechnologyFactors To Consider In Selecting Technology• Available SpaceAvailable Space• Available Labor (Inmate or Staff)Available Labor (Inmate or Staff)• Vendor Previous Experience With Same Vendor Previous Experience With Same
FeedstocksFeedstocks• Control of Odors, Vermin, and VectorsControl of Odors, Vermin, and Vectors• Life - Cycle CostsLife - Cycle Costs
– Capital Costs And All O&M Costs Over Expected Life Of Capital Costs And All O&M Costs Over Expected Life Of SystemSystem