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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/2734

Authors: Fitsum, Tsegaye
Advisors: Dr.Ing Berhanu Assafa
Copyright: Jul-2007
Date Added: 6-May-2012
Abstract: ABSTRACT In any solid waste management study information on solid waste characteristics and rate of generation is essential. One of the main constraints for proper planning and design of solid waste management in Addis Ababa is the absence of reliable and up to date study in this area. Since the lion share of the municipal solid waste (76%) is contributed from residential houses giving solution to this part will contribute much for the over all management of the municipality solid waste. The assessment of management options for domestic solid waste was done in an area called French Legasion situated in Yeka sub-city, one of the 10 sub-cities of Addis Ababa city government, with the objective of assessing the characteristics of solid waste generated at the household level and its level of impact on the environment as well as identifying sustainable management options accounting for economical, environmental feasibility and social attitudes. To get reliable data 120 households were randomly selected from the study area. A structured questionnaire was used to collect household level data on the socio-economic and daily traits. The solid waste of each household was collected, sorted and weighted for 11 consecutive days for compositional and generation rate analysis. The proximate and ultimate analysis was also undertaken in the Addis Ababa chemical engineering laboratory and in the analytical laboratory of ILRI. Statistical software called Statistical Package for Social Science (SPSS 10) was used during the analysis for both the structured questionnaire and the collected solid waste data. According to the data analysis the composition of the waste was found high in food waste (55.35%) followed by ash and dirt (22.29%); the average generation rate was determined to be 196 gm/cap/day with the average density of 311 kg/m3. The correlation analysis clearly showed that the generation rate positively correlated to the socio-economic background of the households and negatively correlated to the educational background. ix The survey analysis also showed that illegal solid waste disposal in open spaces is common practice in the area and some of the main reasons raised were the inappropriate placement and insufficient number of transfer stations and communal containers. The result of the proximate analysis showed high moisture content and this directly related to the trend of high consumption of fresh vegetables. And this ultimately lowers the calorific value of the material (6001.27KJ/Kg). Incineration is not the best available option in the management of domestic solid waste due to the high capital cost, skilled manpower requirement and environmental burden. The compositional analysis as well as the result of proximate and ultimate analysis clearly showed that the materials generated from residential houses are ideal for the preparation of compost, which ultimately diverts organics from entering the MSW stream. Since organics are the largest components of residential solid waste, the greatest reduction in waste collection and disposal can be achieved by diverting this component of the waste stream. In order to attain a sustainable management of solid waste much effort has to be done on educating of peoples towards the management options; and much efforts has to be forwarded for individuals and enterprises engaged on the recovery of waste.
URI: http://hdl.handle.net/123456789/2734
Appears in:Thesis - Environmental Engineering

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