Development of 3D GIS-Based Model for Management of Urban Solid Waste in Aba Metropolis Abia State Nigeria
Abstract
The study aimed to develop 3D GIS-Based Model for Management of Urban Solid Waste in Aba Metropolis Abia State Nigeria. The objectives include to identify and collect waste disposal point within Aba Metropolis using Geo-spatial technology, to create the database of features (buildings, road, solid waste disposal point), to develop a digital 3D GIS-Based model for management of urban Solid waste in Aba Metropolis and to recommend the best solution based from the analysis obtained.The dataset included base map from Ministry of Lands and Survey, waste collection point data acquired using Handheld GPS and Unmanned Aerial Vehicles (UAV DJI Phantom 4) analysis in Agisoft and other Geo-spatial software, projected population density data from National Population. Data processing involved scanning, georeferencing, digitizing, superimposing or overlay of data from different data source in Arc Map. The results include 68063 buildings and 3682 roads digitized, location of twenty-eight (28) waste collection and three (3) waste disposal points with Geo-spatial technology, development of a 3D GIS based waste model of a disposal site with a Perimeter of 269.252m Area 4633.2 (m²) volume above 47503.9(m³) below 13.659 (m³) total 47490.3 (m³), another result from buffer analysis reveals 1125 and 7065 buildings housing people around collection and disposal point respectively are under waste risk especially along Aba River (waterside) as multi criteria analysis was further used to confirm waste hazard, vulnerability and risk. From the analysis there should be house to house collection of waste to enable government combat and control the discharge of waste within the urban area was recommended, this can be achieved successful with help of database creation in Geographic Information System especially a 3D model of waste, buildings, road as this will show reality of Aba and its environment. This will eventually help in improving the socio-economic life of the people for sustainability, improved living and good governance which is apt with the Un-habitat vision of 2030 agenda on sustainable environment and socio-economic development globally.
