Pollution Engineering - April 2009 - (Page 39) From Curbside to Landfill From Curbside Pickup (Garbage/Trash) to Landfill, Cash Flows (Garbage/Trash/ Municipal Solid Waste (MSW) Curbside of Residential Customers $-Revenues $-Expenditures Garbage Truck Service for Curbside Pickup $-Revenues $-Expenditures Landfill Local Solid Waste Agency $-Cost "Tipping Fee" “ Combined net cash flow for the plasma arc facility and the curbside to landfill operations would be about $9 million per year of positive cash flow. electricity and sell it to the grid at 4.50 cents per kilowatt hour, the municipality would receive a revenue of $35 per ton of MSW processed (tipping fee), and receive $15 per ton for the vitrified slag byproduct as road aggregate material. EXPENDITURES: Parameter Cedar Rapids Marion CURBSIDE PICKUP a. Time at curbside for solid waste pickup b. Operating, hours per day for solid waste pickup c. Operating, days per week for solids waste pickup d. Capital cost of a new truck, rear loading refuse truck e. Annual cost of capital for refuse truck at 5%, 6-yrs f. Number of employees per refuse truck g. Cost per employee per year, refuse truck operation h. Time at curbside for recycling pickup i. Operating, hours per day for recycling pickup j. Operating, days per week for recycling pickup k. Capital cost of a new truck, recycling truck l. Annual cost of capital for recycling truck at 5%, 6-yrs m. Number of employees per recycling truck n. Cost per employee per year, recycling truck operation o. Additional staff required for over-all operations Number of additional persons on payroll Cost per employee per year, over-all operations p. Percentage of annual recycling revenues as a loss 8.00/year $60,649.10 10.00% 0.00/year $0.00 0.00% 0.509 minutes 8.00 hours/day 5.00 days/week $180,000.00 $35,095.37/yr 3 persons/truck $60,649.10 0.408 minutes 8.00 hours/day 5.00 days/week $140,000.00 $27,296.40/yr 2 persons/truck $60,649.10 0.208 minutes 8.00 hours/day 5.00 days/week $180,000.00 $35,095.27/yr 3 persons/truck $60,649.10 0.163 minutes 8.00 hours/day 5.00 days/week $140,000.00 $27,296.40/yr 2 persons/truck $60,649.10 Workin’ for the city A preliminary cash flow analysis of the process has established a positive net annual revenue of just under $3.8 million per year. This cash flow is generated just by collecting and delivering residential solid waste to the landfill even after subtracting the landfill tipping fee of $35 per ton of waste. If this cash flow was utilized towards financing a process for management of MSW to the landfill, say, a plasma arc gasification system, what impact could it have? A plasma arc gasification facility with capacity of 500 tons per day of MSW demonstrates this affect could be quite meaningful. Capital investment for a 500-tons-per-day facility would be quite large, an estimated $101.6 million. Bond payment for the capital cost at 6 percent interest for 20-year financing would tack on an additional $8.8 million per year. However, revenue from the facility could cover some of that cost. If the plasma arc facility was used to produce ” LANDFILL DISPOSAL q. Tipping Fee, $/ton waste solids r. Pounds waste per truck (refuse truck) s. Pounds recycling material per truck (recycle truck) t. Receiving trucks, operation u. Percentage of recyclables picked up but landfilled v. Drop off fee to recycling center w. Additional fees Figure 2 APRIL2009 www.pollutionengineering.com 39 $35.00/ton 16,480 lbs/truck 9,420 lbs/truck 5.00 days/week 10.00% $0.00/ton $0.00/year $35.00/ton 16,480 lbs/truck 9,420 lbs/truck 5.00 days/week 0.00% $10.00/ton $179,122.00/year http://www.pollutionengineering.com
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