Spreadsheet Tool User Manual forï£°ï£° Planning MSW Management

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Spreadsheet Tool User Manual for Planning MSW Management The total amount of impacts on the various variables would increase or decrease the percentage of inputs on the Inputs Worksheet. This would in turn have an effect of the total waste inventory along with a change in the total amount of MSW going to the landfill. The Inputs impacted would be as follows: VARIABLES Percentage of Per Capita MSW Generation Per Capita MSW Generation IMPACTS ON DECREASES Percentage of Segregation Percentage of Recycling Percentage of Treatment Percentage of MSW Segregation Percentage of Recycling of Dry Segregated MSW Percentage of Decentralised Treatment of Wet Segregated MSW INCREASES INCREASES INCREASES MSW TO LANDFILL DECREASES 26
Spreadsheet Tool User Manual for Planning MSW Management 3 Assumptions and Calculations in the Spreadsheet Tool 3.1 Assumptions There are several assumptions made in the Spreadsheet Tool. These assumptions were required to be made in order to make the Model functional and more flexible. The main assumption is the Waste Flow Model which has been assumed for this MSW Tool. The Waste Flow model has been considered after reviewing several waste flow models around the world for various different cities. The inputs required in the Inputs Worksheets were set based on Outputs in this Waste Flow Model. The inputs in the Inputs Worksheet have to be entered by the user. However, default values have been provided after comparing values from various cities around developing and developed countries. → The per capita generation of MSW is assumed to be only from the households. The other areas are not considered. → The assumptions made in the Waste Flow Model include that the Total MSW Generated undergoes segregation where the MSW is separated as Segregated or Non‐segregated MSW. → Non‐segregated MSW refers to mixed waste which is sent to the Waste bins directly. → Segregated MSW refers to 100% segregation of MSW into dry and wet components. The Dry component of the segregated MSW undergoes Recycling where the MSW is recycled and the leftover Dry MSW is sent to the Waste bins. The Wet component of the segregated MSW undergoes Decentralised Treatment where the MSW is treated and the leftover Wet MSW is sent to the Waste bins. → The MSW from the bins is then collected by vehicles (dumper placer whose capacity is assumed to be that of one bin and waste collection vehicle whose capacity has to be entered by the user). The vehicles transfer the MSW to the Transfer Stations. → From the Transfer Stations the MSW is sent to the Landfill. → The MSW received at the landfill then undergoes segregation where the MSW is separated as Segregated or Non‐segregated MSW. → The Non‐Segregated MSW is deposited into the landfill. → Segregated MSW refers to 100% segregation of MSW into dry and wet components. The Dry component of the segregated MSW is deposited into the landfill. The Wet component of the segregated MSW undergoes Centralized Treatment where the MSW is treated and the leftover Wet MSW is deposited into the landfill. → Therefore the total MSW deposited in the landfill is assumed to be the non‐segregated MSW at the landfill site, dry component of the segregated MSW at the landfill and the leftover wet component of the treated wet segregated MSW at the landfill. 27
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Spreadsheet Tool User Manual forï£°ï£° Planning MSW Management

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