Geo-Information for Urban Waste Disposal and Management: The Case Study of Owo LGA, Ondo State, Nigeria (original) (raw)
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Journal Article, 2020
Municipal solid waste management is a global contemporary issue affecting cities' authorities. Like other major cities of the world, Kano metropolis, with a population of more than four million , is faced with serious solid waste management problems. This study assesses the suitability of existing locations of solid waste disposal sites within metropolitan Kano. Satellite imageries (Landsat, AsterDEM), GPS-locations of the waste disposal sites, and topographical map of Kano metropolis were used as data for this study. The data were modeled and analyzed using a multi-criteria decision technique. The output produces restriction and suit-ability maps for solid waste disposal within the metropolis. Results show that only 26 percent of the existing solid waste disposal sites are suitable, while 74 percent are unsuitable sites. The study recommends the relocation of those existing unsuitable solid waste disposal sites to more environmentally favorable sites as highlighted in this study. ARTICLE HISTORY
Solid waste disposal is a serious problem in the urban areas of Nigeria because of indiscriminate dumping. Particularly, Katsina-Ala Town has the problem of identifying suitable sites for solid waste disposal. The main objective of this study was to select potential areas suitable for solid waste disposal for Katsina-Ala Town. The main data used for this study were spot5 satellite image with a spatial resolution of 5m; digital elevation model (DEM) with 0.5 m spatial resolution, and ground control point (GCP) collected through ground point survey (GPS) and topographical map of the study area. The maps were prepared by overlay and suitability analysis using geographic information system (GIS) methods, remote sensing techniques and multi criteria analysis. Factors considered for MCE in this study includes; drainage, elevation, road network, important places and settlements. The final suitability map of the study area was prepared on Arc map and labelled as high, moderate, low. Results indicate in the total area suitable regions are 1.3% less suitable; 21.8% moderately suitable; and 0.37% most suitable. The most suitable areas for solid waste disposal fall on the north-eastern part of the town where there are least environmental and health risks. The GIS and remote sensing techniques are important tools for solid waste site selection. Hence, the capacity to use GIS and remote sensing technology for the effective identification of suitable solid waste dumping site will minimize environmental risk and human health problems.
Site Suitability Analysis for Municipal Solid Waste Disposal in Birnin Kebbi, Nigeria
Management of solid waste is one of the challenges facing most developing countries like Nigeria where there is no substantial National Waste Management Plan. This led to the practice of open dumping system, which is not environmentally sound and socially acceptable. Considering the nature of solid waste disposal in Nigeria, there is a need to utilize techniques and technology for effective decision making in selecting appropriate site for solid waste disposal. This aim of this paper lies in management of waste at its final destination or dumping grounds with the objective of locating the most suitable site for municipal solid waste disposal in Birnin Kebbi. Remote Sensing technology and Geographic Information System Multi-criteria evaluation method were employed to perform effective site suitability analysis of the study area. Landsat 8 OLI was used to generate needed data for this research. Buffer distance analysis and overlay operation were used to evaluate site suitability criteria considered for this research. The result achieved in this study generated maps that shows better site for urban solid waste disposal/landfill in Birnin Kebbi; these may help in finding a better approach to curtail the current challenges.
The Use of GIS for Identifying Optimum Landfill Sites in Osogbo, Southwestern, Nigeria
UNIOSUN Journal of Engineering and Environmental Sciences, 2023
The amount of waste disposed off globally has significantly increased due to increase in population and change in consumer habits. Million tons of organic waste are disposed of globally through incineration, land applications, landfill, and other methods. Selecting appropriate places for waste landfills is a challenging task for planners, especially in states with dense populations such as Osogbo due to land scarcity, land prices, and increased solid waste generation. Therefore, this study aimed to identify the optimal suitable areas for the solid waste landfill for proper waste management in the study area. In this work, a multi-criteria decision-making approach combining GIS and the Fuzzy Logic technique for landfill suitability site evaluation was used. Six factors are involved in the selection process namely soil, drainage, land use/land cover, built-up areas, road network, and slope. Using the weighted overlay analysis tool in the GIS environment, the results of the MCDM assigned to each criterion show that five potential sites in this study were suitable for the construction of a potential landfill, of which two are located in the most suitable zone and three are located in the unsuitable zone. It was concluded that the results presented on the final aggregation maps demonstrate the significance of selecting the appropriate criteria weights for the environmental and economic set of standards.
Site Suitability Analysis for Landfill in an Industrial Area in Nigeria
Journal of Environmental Geography
This study was set against the background of identifying management strategies to combat the menace associated with poor solid waste management in urban areas of Nigeria. Therefore, it becomes highly necessary to determine suitable sites for landfill. Using remote sensing and geographic information tools and technologies the study identified the scenes of present dump sites; evaluated the conditions for selecting landfill sites; and determined suitable landfills in Ajaokuta, Nigeria. Data for the study were sourced from Sentinel-2A, 2021. Integrated GIS-based analysis using multi-criteria evaluation method was employed to scrutinise the appropriateness of the existing dumpsites for siting landfills. However, with reference to Federal Environmental Protection Agency (FEPA) guidelines, results of buffering and proximity analyses indicated that none of the existing dumpsites could be converted to landfill sites. Moreover, a fuzzy overlay of all the criteria considered was employed to i...
Geospatial Assessment of Suitable Landfill Sites Location in Owerri
Asian Journal of Environment & Ecology, 2017
This study was done with the aim to map the present waste disposal sites in the city, to prepare a landfill suitability map of the area, to recommend the best and the most suitable locations to site the dump sites/ landfills based on a multi criteria decision making technique and GIS. It was carried out in the city of Owerri, capital of Imo state, South Eastern part of Nigeria, from May to August 2016. Data used in this research work were the coordinates taken at the existing landfill sites (Table 1), a Landsat 8 Satellite Imagery and a Shuttle Radar Topographic Mapper (SRTM). Arc GIS v 10.2 and Erdas Imagine 2014 were used to analyze the data. Selected criteria were mapped using the GIS technique and spatial analytic tools, then different constraint map layers were overlaid to obtain a potential suitability map. The results showed ten proposed landfill sites at Awaka, Obinze, Amone, Okuku, Irete, Amaeze, Ihiagwa and Imeabam, with the site at Imeabam, being the most suitable. A more efficient waste disposal system can be developed if GIS is used more in decision making as was illustrated in this research work.
The indiscriminate dumping of solid waste with the attendant environmental consequences has become one of the hydra-headed problems in urban area today. Unfortunately, the ancient city of Ibadan, with an unprecedented high rate of urban sprawl is presently in dire need of suitable dumpsite for proper disposal of her solid waste. The main focus of this study was to scientifically select potential areas for suitable dumpsite for solid waste in the city of Ibadan. The main data used for this study were Landsat image with a spatial resolution of 30 m; SRTM of 90m spatial resolution, ground control point (GCP) collected by ground point survey (using GPS) and base map of the study area. The maps were prepared by multi-criteria (overlay) analysis of Geoinformation techniques. The study revealed that suitable areas for waste dumpsite are scattered within Ona Ora, Oluyole, Egbeda, Ido and Lagelu (LGA).
FUDMA JOURNAL OF SCIENCES
This study assessed the location of landfills in Zaria LGA of Kaduna State by the use of GIS and RS. Increase in population has brought rapid urbanization, which in turn accelerates the rate of waste generation. This caused indiscriminate disposal of waste in landfills within residential centers, which are not properly located; these are source of disease, pollution, and unaesthetic. Hence, all the landfills in the study area were identified (27 landfills) and their locations or spatial data recorded using a GPS. GIS was employed for mapping and spatial analysis using buffering of 500 meters’ proximity to residential houses in order to designate the proper and improperly located landfills. Results of the GIS analyses indicated 2 landfills were properly located, while the remaining 25 were not. Based on the results of this study it is recommended that all the improper landfills should be abandoned and banned by the government; new landfills should be designated at outskirts of the to...
AbstractLandfill refers to suitable end destination for refuse residues to be finally dumped. The majorchallenge has been the identification of method for the determination of suitable landfill. Also isthe multi-objective nature of the site identification spatial processes. Recently, researchers haveindicated that the use of geospatial technology in Multi-Criteria Evaluation (MCE) technique forsite selection analysis looks more appropriate for the location of landfill. This study used thesatellite image 2014 and Geographic Information System (GIS) technique of MaximumLikelihood Classification (MLC) to classify land cover/use that serve as basic land cover data ofthe study area. Global Positioning System (GPS) and Integrated Land and Water InformmationSystem (ILWIS) 3.3 Academics were respectively used as hardware and software for datacapture and analysis while the data manipulation was carried out using the Spatial Multi-CriteriaEvaluation (SMCE) technique. All inputs criteria for the analysis were treated as constrains thatparticipated based on Boolean Logic (BL). While working within the criteria tree of SMCE,constrains were normalized after the imputations of all the map layers. Aggregation to obtain thecomposite index map was then carried. The outcome revealed that three suitable landfills weresuccessfully located to be utilized as standard landfills in Bauchi Metropolis. Therefore, thestudy recommends the use of geospatial technology in SMCE to suitably locate the spatialpositions of landfills in developing cities. Key words: Geospatial Technology, Spatial Multi-Criteria Evaluation, Landfill and Refuse
The rapid growth in urban populations in developing nations such as Nigeria in recent decades and the subsequ ent accelerated urbanization trend have highlighted the need to establish environmentally suitability models. The study area falls within One of the primary methods of urban solid wastes management is sanitary landfill. Improved sitting decisions have gained significant interest in ensuring minimal damage to the different environ mental subcomponents as well as raising the dangers associated with the residents living in its vicinity, thus imp roving the overall sustainable development associated with a landfill's life cycle. This paper uses modern appro ach to sitting a new landfill. Geology, geophysics and geotechnical data were modelled in ArcGIS 10.3 environment using multiple criteria decision analysis (MCDA) in which criteria such as distance from settlement, roads, highway, land use, water body, river, water table, elevation, slope were used after classification, reclassifying, weighting of criteria, data overlaid and finally suitability model map was generated to identify most suitable, moderately suitable and not suitable areas.