Abstract:
The government of Tanzania developed a new master plan of the eco-city at Kigamboni area in
Dar es Salaam. The new eco-city among other thing will provide an integrated wastewater
system in line with climate change development initiatives. The master plan recommended the
centralized MBR technology for the wastewater treatment for the city. However, sustainability
issues of wastewater were not addressed in the master plan. Although the MBR technology is
one of the best technology, its selection for the proposed city of Kigamboni city was made
without prior evaluation for its sustainability. There is no detailed technical, social, Environment
and economy analysis for the selected technology. The main objective of this study was to
review the eco-city master plan with a view of assessing its sustainability and its capacity to
integrate in the existing terrain. In order to evaluate the master plan, a set of criteria and
indicators were developed based on social, economic and environmental dimensions. The set
criteria were analyzed using the Analytical Hierarchy Process (AHP) to compare and rank
different alternatives (decentralized or biological technology, Hybrid and centralized MBR) of
wastewater technologies suitable for Kigamboni eco-city. Sustainability analysis based on AHP
showed 38.87%, 36.28 and 24.86% for decentralized or biological technology, Hybrid and
centralized MBR, respectively. MBR has scored low compare to other technologies such as
Anaerobic Baffled Reactors (ABR) and Constructed Wetlands (CWs). The study also found that
public participation on wastewater selection was inadequate, planning process involved few top
political and influential leaders |
