Question: This minidesign problem is focused on estimating the quantity of waste that a client of yours, Phantom City, generates now and in the future, and
This minidesign problem is focused on estimating the quantity of waste that a client of yours, Phantom City, generates now and in the future, and asks you to consider a design of a green waste and food waste diversion and processing program. Use the following assumptions to begin your calculations:\ \ The average total weight of waste generated from Residential, Commercial, and Institutional generators in Phantom City is 4.5 lb/person/d.\ The population of Phantom City will grow as it has since 1960 and can be projected using the data given in Table 1.\ The composition of waste generated by Phantom City is the same as the national average reported in Table 2 that was generated from Figure 4 in the 2018 MSW Factsheet published in November 2020 by EPA.\ A total of 15% of the population of Phantom City lives in apartments served by dumpsters and assume that this percentage will remain the same in the future. The balance of the population lives in single family homes, that numbered 52,000 single family homes in 2010.\ A total of 1,000 commercial accounts (including apartment complexes, businesses and institutional customers) existed in 2010, and assume this ratio of commercial clients to single family homes is expected to remain the same in the future. The waste composition for these Institutional and Commercial clients is shown in Table 3.\ The capital cost of composting = $5,000/T/d capacity; O&M costs of composting = $30/T; collection cost = $65/T; disposal cost for compost rejects = $100/T\ Table 1. Population of Phantom City Over Time\ \ Year Population\ 1960 95,722\ 1970 105,634\ 1980 115,689\ 1990 125,728\ 2000 135,880\ 2010 145,220\ Table 2. Waste composition for MSW from Phantom City.\ \ Component Weight %\ Paper & Cardboard 23.1%\ Glass 4.2%\ Metals 8.8%\ Plastics 12.2%\ Rubber, Leather, and Textiles 8.9%\ Wood 6.2%\ Yard Trimmings 12.1%\ Food 21.6%\ Other 2.9%\ Table 3. Waste composition for Institutional and Commercial facilities in Phantom City,\ \ Component Institutional Weight % Commercial Weight %\ Paper 52.3% 56.3%\ Glass 6,9% 3.4%\ Metals 4.2% 6.3%\ Plastics 15.1% 10.9%\ Rubber, Leather, and Textiles 0.5% 1.8%\ Wood 4.3% 7.7%\ Yard Trimmings 0.2% 1.6%\ Food 8.9% 9.1%\ Other 7.6% 2.9%\ \ \ \ With this input information, please answer the following questions (100 pts total):\ \ Estimate the population of Phantom City in the Year 2035 using data for past population numbers for the city given in Table 1. (10 points).\ Estimate the total annual quantity of waste generated by Phantom City in the Year 2035 (10 points).\ Determine the total quantity of MSW components listed in Table 2 that are expected to be generated in the Year 2035 (10 points).\ Of the total quantity of MSW determined in Question 3, estimate the annual quantity of waste generated by each of the following sources in the Year 2035 (10 points).\ Residential customers (Single family homes, 70% of total waste)\ Commercial customers (Businesses and apartments, 20% of total waste)\ Institutional customers (10% of total waste)\ Using Tables 2 and 3 that describes the composition of waste components in Residential, Commercial and Institutional waste streams, determine the annual weight of MSW components from each source of MSW, i.e., Residential, Commercial, Institutional. (10 pts)\ If Phantom City is interested in evaluating a food waste diversion program for pre-consumer food waste, i.e., that coming from Commercial facilities, what is the maximum quantify of food waste the program would be expected to handle in the Year 2035? What would be the expected program size if food diversion from Commercial facilities can be expected to be 75%? (10 pts).\ If Phantom City is considering combining Residential Green Waste Composting with Commercial Food Waste Composting, and Residential Green Waste diversion can be expected to be 60%, what would the expected program size be for the combined facility? (10 pts).\ If the composting facility is open 250 days/yr, the City can borrow money at 3% interest over a 10-year period, and a 10% reject rate is expected from the facility, what is the net cost of diverting Commercial Food and Residential Green waste from Phantom Citys landfill stream? (Account for the food and green waste collection cost, reject disposal cost, and the value of avoided disposal cost in your calculations) (20 pts)\ If the final compost project has a density of 810 lb/yd3 and a 30% loss of compost mass occurs during the composting process, what will Phantom City have to charge/yd3 finished compost product to have the compost system break-even? (10 pts)
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