Evaluation of CDM potential of wastewater treatment project: the case of Arusha wastewater treatment project

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University of Dar es Salaam
The aim of this study was to evaluate CDM potential of the Arusha Wastewater treatment system as a climate change mitigation activity through capture and use of methane which is a potent Greenhouse gas. With the current treatment system methane is released to the atmosphere from the open lagoon treating wastewater anaerobically, adding up to the level of Greenhouse gases in the atmosphere and hence contributing to global warming. Methodology used during this study involved a thorough review of literature materials available at the United Nation Framework Convention on Climate Change (UNFCCC web-site), consultations, field visits and collection of key parameters to support calculation and analysis necessary for this evaluation. The results have shown a significant amount of CO2 equivalent that can be reduced per year (6,321 tC02e) if this project is registered as CDM, the results have also shown a good extent of electricity (2,067 Mwh/y) that can be generated from captured methane. However, the financial analysis gave a 6% IRR which is below the benchmark IRR (12%) for such an investment in Tanzania to be financially viable, which implies that the project has a low CDM potential unless possibility in reducing the investment cost is realized. Further studies are therefore recommended for AUWSA to focus on means to lower the investment costs so as to replace the anaerobically open lagoon of the current treatment system.
Available in printed form, East Africana Collection, Dr. Wilbert Chagula Library, Class mark (THS EAF TD745T34N82)
Sewage, Water, Purification, Arusha wastewater treatment project, Clean Development Mechanism
Ntawiha, M. (2013) Evaluation of CDM potential of wastewater treatment project: the case of Arusha wastewater treatment project, Master dissertation, University of Dar es Salaam. Dar es Salaam.