One of the major problems human beings are confronted with in urban setting is the removal of urban waste. This problem has persuaded the urban authorities to use various tools such as Geographic Information System (GIS) to locate landfills. To do that, Sloan Digital Sky Survey (SDSS) has been used in which or multi-criteria decision making (MCDM) methods and GIS are combined. The selection of the burial place and landfill has great importance and different criteria must be considered. SDSS, using MCDM is able to investigate locating landfill using various criteria simultaneously and it determines its importance. This research aims at presenting suitable solution through using computer and GIS related to solid urban waste and their locating in Hamadan based on standard criteria. A comprehensive model based on GIS, to get the suitable burial place and landfill can help to save time and cost. The model of locating burial place of urban solid waste has been presented.

Waste disposal management has been with us since the existence of human beings and has been of a major concern for both the developed and the less developed countries. Considering the implications of solid waste disposal on human health and the environment, proper management of waste material is vital in the sustainability of human lives on this planet. Many forms of sickness such as fever and diarrhea which often claim innocent lives are the result of improper management of waste materials. The main issue for the management of solid waste is locating optimal sites for solid waste disposal and selecting appropriate landfill sites far from residential areas, environmental resources and settlement and this is being demonstrated in this paper using Geographic Information and Multi criteria Decision Process. The integration of GIS and Multi Criteria Decision Analysis has been proved to be the solution to most landfill site selection problems, because GIS provides efficient manipulation and presentation of the data whiles Multi criteria Decision Analysis provides reliable priorities. The landfill sites predicted in this paper is more accurate and reliable because about ten factors that are required in selecting optimal landfill sited were considered. The predicted landfill sites would be of great help to the local authority of Kumasi Metropolis in terms of proper management of waste materials. For each of the sub-metro within the Kumasi Metropolis at least more than one landfill sites were predicted.

Uniosun UJEES, 2024

Rapid urbanization globally has aggravated and worsen the management of municipal solid waste (MSW) in cities, especially the developing countries. This article underscores the pressing need for effective waste management solutions from the unruly contamination of soil and groundwater, or improper waste disposal and focuses on the selection of suitable landfill sites using Geographic Information Systems (GIS) techniques. With a global increase in MSW generation, especially in Sub-Saharan Africa, the environmental and health consequences of open dumping is hazardous. The study employs Multi-Criteria Evaluation (MCE) and Analytical Hierarchy Process (AHP) within the GIS environment, considering criteria such as elevation, slope, aspect, soil properties, proximity to roads, water bodies, and settlements. The analysis integrates diverse data sources, including remote sensing and soil databases, offering a comprehensive evaluation of topographical factors, soil characteristics, and accessibility. Results indicated that approximately 29.73%, falls under the category of "Restricted Area," totaling 18,887.18 hectares. High Suitable areas cover 15.85% of the region, comprising 10,070.28 hectares, while "Very High Suitable" areas, though minimal in coverage at 0.02%, represent nearly perfect sites totaling approximately 12.35 hectares. The results offer valuable insights into landfill suitability, providing a foundation for informed decision-making and sustainable waste management strategies.

1994

Background and purpose: An appropriate solid waste (SW) disposal has been a major problem in municipal environment. The use of landfills is the most economical and environmentally acceptable method for the disposal of SWs all over the world. However, landfill leachate can cause environmental issues such as soil and ground water pollution. So, finding suitable land fill site is one of the most significant tasks in SWM. In this study, Geographic Information System (GIS) and Analytical Hierarchy Process (AHP) method were used for Abadan solid waste landfill site selection. Materials and Methods: Six criteria were used in this study comprise distance from aquatic ecosystem, risk, residential, economical, geographical and social criteria. Each criterion weighted by using AHP method. After omission of inappropriate areas, the suitability examination of the residue areas was accomplished using GIS. Results: Relative importance weight of each criterion and score value of sub-criteria in the GIS environment was determined and finally suitability map was prepared. Based on the final suitability map, appropriate solid waste landfill site was located in north part of the study area. Conclusion: The combination of AHP method with GIS in our experiment proves it is a powerful tool for solid waste landfill site selection.

Engineering, 2014

Solid waste management is becoming a more serious problem with time especially in developing countries like Iraq. It is not regulated sufficiently in Iraq. At present, there are various techniques used for solid waste management such as landfill, thermal treatment, biological treatment, recycling etc. The landfill is the most common mode for the disposal of solid waste. There are no regulations for landfill site selection which is quite complex process. In this study, landfill site selection was performed by using Multicriteria Decision Analysis (MCDA) and Geographic Information System (GIS) for the Al-Mseiabqadaa. Even in the case of existing landfills in this qadaa, it's temporary or non-conforming to the environmental condition. In order to determine landfill site that is good for the inhabitants and the environment several criteria (e.g. as Urban centers, Land use, Airports, Pipes, Power lines, Railways, Roads, Slope, Streams, Surface water, Industrial areas, Oil pipes, Liquid gas pipes, Soil types) were used to select the proper site. The MCDA was used to measure the relative importance weighting for each criterion used. Each map layer was formed with the aid of GIS and final suitability map was created by overlay analyses of each criterion map. According to obtained results, high and low suitable areas were determined in the study area. Field checks were also performed to determine the accuracy and suitability of candidate site.

2017

Given the potential negative environmental impacts linked with wild landfills in Béni Mellal-Khouribga Region, there is a significant need to accelerate the development of controlled intermunicipal landfills. Any landfill project requires identification of the most suitable sites to prevent environmental adversity. So, this study was conducted to identify candidate landfill sites using geographic information system (GIS) and multi-criteria evaluation techniques. Ten suitability criteria including distance to residential areas, aspect (wind), geology (lithology), distance to faults, distance to surface water, groundwater table, land use, distance to roads, elevation, and slope are considered in the siting assessment. The thematic maps of all criteria were prepared in GIS environment using Boolean and analytic hierarchy process (AHP) standardization. After hiding unsuitable areas of landfill sites identified by the Boolean method, each criterion was evaluated with the aid of AHP and the final landfill site suitability map was generated using the overlay analysis in GIS. The results showed that 54% of the study area is not suitable, 12% is lowly suitable, 24% is moderately suitable, and indeed 10% is highly suitable for landfilling. The identified suitable areas will require careful field studies before the final decision for landfill site selection. Nonetheless, this study can help planners and local and regional authorities to better manage the solid waste in the region.

Arabian Journal of Geosciences, 2013

Landfill siting is a complicated process because it must combine social, environmental and technical factors. In this study, in order to consider all factors and rating criteria, a combination of geographic information systems and analytical hierarchy process (AHP) was used to determine the best sites for disposal of municipal solid waste (MSW) in Mahshahr County, Iran. In order to the decision making for landfill siting a structural hierarchy formed and the most important criteria: surface water, sensitive ecosystems, land cover, urban and rural areas, land uses, distance to roads, slope and land type were chosen according to standards and regulations. Each criterion was evaluated by rating methods. In the next step the relative importance of criteria to each other was determined by AHP. Land suitability for landfill was evaluated by simple additive weighting method. According to the landfill suitability map, the study area classified to four categories: high, moderate, low and very low suitability areas, which represented 18.6%, 20.3%, 1.6 and 0.8% of the study area respectively. The other 58.7% of the study area was determined to be completely unsuitable for landfill. By considering the parameters, such as the required area for landfill, distance to MSW generation points, and political and management issues, and consulting with municipalities managers in the study area, six sites were chosen for site visiting. The result of field study showed that it is a supplementary, and necessary, step in finding the best candidate landfill site from land with high suitability.

Environmental Geology, 2005

, 114 pages One of the serious and growing potential problems in most large urban areas is the shortage of land for waste disposal. Although there are some efforts to reduce and recover the waste, disposal in landfills is still the most common method for waste destination. An inappropriate landfill site may have negative environmental, economic and ecological impacts. Therefore, it should be selected carefully by considering both regulations and constraints on other sources. In this study, candidate sites for an appropriate landfill area in the vicinity of Ankara are determined by using the integration of Geographic Information Systems and Multicriteria Decision Analysis. For this purpose, sixteen input map layers including topography, settlements (urban centers and villages), roads (Highway E90 and village roads), railways, airport, wetlands, infrastructures (pipelines and power lines), slope, geology, land use, floodplains, aquifers and surface water are prepared and two different MCDA methods (Simple Additive Weighting and Analytic Hierarchy Process) are implemented in GIS environment. Comparison of the maps produced by these two different methods shows that both methods yield conformable results. Field checks also confirm that the candidate sites agree well with the selected criteria.

APPLICATION OF GIS IN LANDFILL SITE SELECTION FOR SOLID WASTE MANAGEMENT IN AN URBAN ENVIRONMENT, 2020

Less economically developed countries are facing challenges resulting from poor solid waste management due to a number of reasons such as the rise in urban population, the construction era, industrial growth, and unsustainable consumption practices. Site selection of waste disposal and waste management for developing countries always pose major challenges. The application of Geographical Information Systems (GIS) and Multi-Criteria Decision Analysis (MCDA) in the location of landfills is still in its infancy. In this study we tested the suitability of pre-existing landfill locations by comparing them with the newly located landfills in the study area. In order to locate the sites of appropriate landfills, applied the Analytic Hierarchy Process (AHP) model of MCDA during criteria evaluation to give each criterion weight matching its importance. Our findings show that most suitable landfill sites constitute a low percentage (0.11%) than unsuitable area (91.95%). The Jaccard test produced an overlap of 22.72% and high deviation between the newly located landfills and the pre-existing Pomona landfill. Comparisons of the extent of suitable area for landfill site selection show that the proportions differ significantly (χ2 = 7305.8, df=2, p<0.0001). Our study is a cost effective verifiable tool in landfill site selection and assessing suitability of landfills to make economic and environmentally conscious decisions so as to ensure minimum damage to the environment.

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