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TRANSCRIPT
Case Study: Mohegan Sun
Written by: Priscilla Hayes, Director
SWRRG
Atlantic County Forum, June 5, 2008
Edited by: Jean McInnis
Mohegan’s Recycling Program
• Avoided Incineration Costs– Waste meat and vegetables from Mohegan kitchens and restaurants are picked up every morning by Millaras Piggery
– Grease from all kitchen and restaurant wastewater is removed by AGRUs and waste fryolator oil is picked up by Western Mass Rendering and used as a constituent in animal feed stock
AVOIDED INCINERATION - MITIGATION OF THE FOOD CYCLE
WASTE &BEDDING
COMPOST at Piggery
WORMS
Grease
Recycled
WashedReused
Waste Meat & Veggies Piggery
WMR as animal feed constituent
Department Name 2002 2003 2004 2005 2006 2007 MTGA Engineering (Earth/Sky Casino)
Tons Tons Tons Tons Tons Tons
Trash (non‐segregated) 7711 8551 8640 9123 9048 9348
Trash co‐mingled w/bottles & cans
420 estimate
585 673 664 525 estimate
536
Cardboard 637 813 888 840 773 721Bottles/Cans 456 594 672 658 600 539Scrap Metal 71 136 66 70 3 87Office Paper 31 68 82 89 120 117Light Iron 5 0 0 0 0 0Mixed Paper 9 0 3 0AGRU Grease/Fryolator Oil 428 377 433 453 459 452Lamps (fluorescent, HID, halogen, compact, etc)
1.5947 .7079 3.4916 7.6 5 17.7
Electronic Waste (NLR & We Recycle 2006/2007)
.1385 .289 1.42 6.5 27
Lead Acid Batteries 2.89 2.8 .669Batteries (alkaline/NiCad) 1.9115 .838 1.24 1.185Drummed WastesOily Solids 1.6 1 .862Millaras PiggeryFood Waste (# of 55 gal drums)
8698 10,436 16,331 15,276 12,557 12,555
RECYCLING SUMMARY
Overall Features of Mohegan Sun Food Waste Recycling System
• Collection stations follow the logical flow of food waste from five distinct streams in the casino: – Employee dining room
– Sit down dining rooms
– Banquet dining
– Room service
– Pot room—leftover food
Overall Food Waste System, continued
• 13 Somat machines pulverize, mix, and press water out of most food waste
• This vastly reduces the volume and weight of the food waste sent to the piggery; moreover, it reduces the excess water consumed by the pigs, which can be a problem.
• More importantly, it reduces the cost, since the water is heavy, and removing it removes cost
Overall Food Waste System, continued
• Other stations, including the pot room, simply scrape food waste into a barrel
• The food waste is moved with wheeled gurneys to refrigerated locations, to await pickup by the farmer.
• Waste oil is divided into two types—the more valuable, yellow grease, which is spent oil from the Frylolators, and e.g. bacon cooking
• The “brown” grease, which is trap grease
Yellow Grease/Brown Grease
• Yellow grease is pumped into waste fryolator oil tanks located on both Earth and Sky Loading Docks
• Yellow grease is recycled by Western Mass Rendering for use as an animal feed constituent
• Brown grease is extracted from wastewater by AGRU and placed in 55 gallon drums for pick up
• Brown grease is also recycled by Western Mass Rendering for use as an animal feed constituent
Some Continuing Issues
• Food waste recycling sequence is more effective than bottles and cans recycling. Also, employees put bottles and cans in the collection unit in plastic bags, creating contamination and extra air space.
• “Fast food,” from tenant restaurants at the casino, is lost as regular trash. Millaras Piggery is the end destination, going to compostable tableware and food packaging would not help here.
• The casino has two systems to handle the trap grease and the residual food scraps in the wastewater; one does not accommodate all of them.
Tray Collection Belt in Employee Dining Room
Banquet Plate and Food Waste
Room Service Before
Room Service After
Shells go in the Trash (left)/Pot Room with Barrel (right)
Food Conducting Trough for the Somat Machine
Somat Machine extracts the water
Gurneys Used to Transport Barrels of food waste to refrigeration
Food Waste Barrels—Each is Only Filled Three Quarters Full for Ease of Handling
Yellow Grease Barrels
The Farmer Washes the Barrels Squeaky Clean at the Farm
Yellow Grease Tank (to the right on the Office Paper Container)
Interceptor for Trap (Brown) Grease and Residual Food Waste
Brown Grease Barrels
Brown Grease Barrels Ready To Be Covered With Plastic For Pickup by Western Mass Rendering
Contamination of Bottles and Cans with Plastic Bags
Other Recycled Materials
Mohegan Sun also has roll offs for: –Scrap metal
–Wood
–Cardboard–Bottles/Cans–Office Paper–Newspapers
Comparative CostsType of Trash Disposal
DestinationDisposal charges
Hauling Charges Per Dumpster
Dumpster Weights
Regular Trash Covanta incinerator
$60/T $100/haul 7‐15T
Co‐mingled Bottles/Cans
Willimantic Waste
$49/T $60/haul
Bottles/Cans Willimantic Waste
$45/T $60/haul
Cardboard Willimantic Waste
No charge $60/haul
Office paper/ newspapers
Willimantic Waste
No charge $60/haul
Scrap Metal Willimantic Waste
No charge $100/haul