Solid Waste Landfill Site Selection Research Articles

QGIS-based weighted linear combination plugin for landfill site selection: a case study in Tokat Province, Turkey.

Proper disposal of solid waste is crucial for the protection of natural resources and human health. However, increasing population and changes in consumption habits have led to a global increase in solid waste production. Therefore, a site selection process for solid waste management that takes into account environmental, economic, and social factors is needed. The number of open-source GIS (geographic information system) software programs used in site selection analysis is increasing day by day. QGIS software is an open-source GIS software developed by free software developers, with its popularity increasing with each new version and allowing for the development of plugins with the Python programming language. The shareability of plugins developed with QGIS software brings together open-source GIS users around the world for common goals. In this study, a plugin called "LANDFILL SITE SELECTION (LFSS)" was developed in the QGIS software environment for solid waste landfill site selection and a suitability map was created for solid waste landfill site selection in Tokat, Turkey, using this plugin. For this purpose, 14 evaluation criteria and 8 exclusion criteria were selected, the importance levels of criteria and sub-criteria were determined using the AHP method, and a solid waste landfill site selection suitability map was created using the developed plugin.

Comparison of AHP and TOPSIS methods in municipal solid waste landfill site selection of Songhor County

Comparison of AHP and TOPSIS methods in municipal solid waste landfill site selection of Songhor County

Katı Atık Yer Seçimi İçin Kars İlinde Bir Uygulama

In order to control environmental pollution caused by solid wastes needs to be stored properly. In this study, SWARA which is a Multi Criteria Decision Making method was used to determine solid waste site selection criteria in Kars Province and criteria weights were determined by SWARA. Also MOORA method was used to select the most suitable solid waste site. As a result of this study, it has been determined that the importance of solid waste landfill site selection criteria are "Natural Life Protection Areas", "Land Costs", "Population Density", "Soil and Geology Structure", "Distance to Urban Areas". On the other hand, it has been determined that the least caretakers are "Slope", "River Network", "Road Network", "Underground Water Conservation Areas", "Historical and Important Cultural Areas". In order of the optimal solid waste location selection, A4 alternative in Kars province has been the optimal solid waste location.

Municipal solid waste landfill site selection: a geotechnical and geoenvironmental-based geospatial approach

This research is aimed at determining suitable areas within Akure metropolis with residual soils of excellent geotechnical properties as landfill liners and with considerable depth to groundwater table, along with other environmental factors, for siting municipal solid waste dumpsite. Field work, soil sampling, and laboratory geotechnical tests were carried out based on standards outlined in British Standards, BS 1377. The suitability of geotechnical parameters was evaluated using existing standards described in previous research works. The geotechnical conditions, along with lithologic, hydrologic, topographic, and land-use conditions, of the study area were allotted weightages, and respective maps were produced using fuzzy membership approach. The coefficient of permeability, plasticity index, fines percentage, and maximum dry density (MDD) values ranged from 2.66 × 10–9 to 3.99 × 10–3, 0 to 34.9%, 4.3 to 78.8%, and 1432 to 2113 kg/m3 respectively. Based upon the evaluation of the derived geotechnical parameters, about 307 km2 of the study area (over 90% of the soils sampled) is highly suitable for landfill consideration. Based on the sites’ lithological conditions, the charnockite-derived soils are most suitable for landfill consideration. The land-use/land-cover criteria indicated that areas covered with dense vegetation, cropland, grassland, and/or derived savanna cover an area of about 188 km2 and are rated most suitable for landfill. Based on topography, distance to drainage, and depth to groundwater table criteria, an average of about 78 km2 of the land mass of Akure is rated averagely to very suitable. Based on the overlay of all the fuzzy members used as criteria, of the total land area of about 335 km2 which Akure metropolis occupies, an area of 31.7 km2 (9.5%) is most suitable and 133.73 km2 (39.9%) is averagely suitable, while 169.73 km2 (50.6%) is considered not suitable for siting solid waste landfill. This study ascertained that the integration of geotechnical, lithological, hydrological, and topographical factors, as well as land-use criteria, are important in the selection of appropriate municipal solid waste landfill sites with minimal environmental contamination potential or threat. It further proves that GIS is a genuine tool for making decisions regarding the planning, designing, and development of urban areas.

Implementation of fuzzy, Simos and strengths, weaknesses, opportunities and threats analysis for municipal solid waste landfill site selection: Adana City case study.

The selection of suitable landfill locations for municipal solid waste has become a top priority, especially in developed countries as a result of rapid population growth, unplanned urbanisation, increasing waste production and the limited area available. However, determining the location of landfill sites is a complex decision-making problem for municipalities and depends on social, environmental, technical and economic factors and regulations. In this study, we combined a geographic information system (GIS), multi-criteria decision-analysis techniques and fuzzy logic to determine the best location for landfill sites in Adana, Turkey, in four steps. Firstly, the threshold values and the coefficient weights of 15 criteria, grouped into environmental and socio-economic factors, were determined by a literature review and expert opinion to select suitable landfill locations. Secondly, selection criteria were standardised using fuzzy logic. Thirdly, we assessed the criteria weights based on their effectiveness on the selection of potential landfill sites using the Simos method. According to the weight coefficients, environmental factors are more important than socio-economic factors. Final maps for each criterion were calculated and overlaid by a GIS. As a result, the final suitability results were divided into four discrete categories: very high, high, moderate and low suitability areas, representing 1%, 76%, 17% and 6% of the location options, respectively. Finally, four different alternative areas were identified as being very highly suitable for landfill locations, which were evaluated in detail using a strengths, weaknesses, opportunities and threats analysis. Three key aspects affect the final decision of a landfill site, in decreasing order of importance: environmental protection, minimising the negative impact on urban life quality and economic issues. Consequently, these results can guide decision-makers (ministries, municipalities, planners, etc.) during the selection of suitable landfill sites in both national and international studies.

Site Selection for Hazardous Waste Using FuzzyLogic Combined With Analytic Hierarchy Process: ACase study in Nahavand, Iran

Hazardous wastes include various types of chemicals and other wastes generated from industrialand other sources. Because of the complexity of waste management systems, the selection of theappropriate solid waste landfill site requires consideration of multiple alternative solutions andevaluation criteria. This paper investigated the utilization of the fuzzy logic in combination withAnalytic Hierarchy Process (AHP) technique by applying GIS and IDRISI programming for choosinghazardous waste landfill site in Nahavand, Iran. Based on the real conditions of the study area, weconsidered economic, biological and topographical factors (12 criteria). The candidate sites weredetermined based on the criteria weights. The best location was determined via the fuzzy logic andthe AHP methods. This study found that the combination of fuzzy logic and the AHP method was thebest option for selecting a site for hazardous waste landfill. In the end, 6 suitable areas were selectedfor a hazardous waste landfill in the city. This study verified that the combination of the AHP methodwith fuzzy logic using GIS in our project is a powerful tool for solid waste landfill site selection.

A Combined Goal Programming and AHP Approach for Solid Waste Landfill Site Selection

Tum dunyada, nufus ve kentlesmenin artmasi ve gelisen teknoloji ile beraber uretilen atik miktari da artmaktadir. Kati atiklarin bertarafi, buyuk oranda duzenli depolama yontemiyle saglanmaktadir. Bir duzenli depolama sahasinin uygun sekilde projelendirilmesi ve isletilmesi icin en onemli on sart uygun kurulus yeri seciminin yapilmasidir. Saglikli, verimli, uzun omurlu, surdurulebilir ve yasal duzenlere uygun duzenli depolama yer secimi cok kriterli bir karar problemidir. Bu calismada; Ankara ili ve cevresinde kurulabilecek kati atik duzenli depolama tesisi kurulus yeri alternatifleri, cevresel, ekonomik, sosyal ve zeminsel kriterler acisindan Analitik Hiyerarsi Prosesi (AHP) ile degerlendirilmistir. Duzenli depolanan yillik atik talebini karsilayacak alternatiflerin secimi; AHP ile hesaplanan kriter agirliklarini, alternatif onceliklerini kullanan ve sistem gerceklerini yansitan hedef programlama (HP) modeli ile gerceklestirilir.

Evaluating solid waste landfill site selection using multi-criteria decision analysis and geographic information systems in the city of Elazığ, Turkey

Evaluating solid waste landfill site selection using multi-criteria decision analysis and geographic information systems in the city of Elazığ, Turkey

Solid Waste Landfill Site Selection in the Sense of Environment Sensitive Sustainable Urbanization: Izmir, Turkey Case

Each stage of the planning process should be based on the natural resource protection, in the sense of environmental sensitive and sustainable urban planning. Values, which are vital for the continuity of the life in the Earth, as soil, water, forest etc. should be protected from the undesired effects of the pollution and the other effects caused by the high urbanization levels. In this context, GIS-MCDM based solid waste landfill site selection is applied for Izmir, Turkey, where is a significant attraction place for tourism. As Multi criteria Decision Making (MCDM) technique, Analytical Hierarchy Process (AHP) is used. In this study, geological, tectonically and hydrological data, as well as agricultural land use, slope, distance to the settlement areas and the highways are used as inputs for AHP analysis. In the analysis stage, those inputs are rated and weighted. The weighted criteria are evaluated via GIS, by using weighted overlay tool. Therefore, an upper-scale analysis is conducted and a map, which shows the alternative places for the solid waste landfill sites, considering the environmental protection and evaluated in the context of environmental and urban criteria, are obtained.

Municipal Solid Waste Landfill Site Selection using Analytical Hierarchy Process Method and Geographic Information System in Abadan, Iran

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.

Municipal solid waste landfill site selection using geographical information systems: a case study from Çorlu, Turkey

The rapid population growth due to fast urbanization in developing countries leads to environmentally sustainable and efficient management of solid waste. Insufficient solid waste landfill sites, in particular, require new areas because of rapid urbanization. This reveals the need to select appropriate landfill sites, in terms of pollution, that meet the requirements of curbing pollution. In this study, a new solid waste site selection tool was presented for the assessment and selection of areas for a municipal solid waste (MSW) landfill using a combination of point count index and constraint overlaying method with a geographical information system (GIS). For this purpose, factors affecting the site selection tool development were gathered under three groups, namely geological and natural, environmental and social–economical. For the first group, weighting for each criterion—depending upon its relative importance—was assigned, and ratings were given appropriately with their relative magnitude of impact. For the second and third groups, buffer zones were created in order to perform overlay analysis. This tool was used to perform MSW landfill selection of Corlu District. According to the final map produced with this tool, two areas were identified within the district limits. This procedure was time saving as it was quite easy and did not require too much time and money to collect data. However, besides the usefulness of the procedure, at the final stage of decision-making, some further investigations should also be made.

Municipal solid waste landfill site selection with geographic information systems and analytical hierarchy process: a case study in Mahshahr County, Iran

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.

Municipal solid waste landfill site selection for the city of Şanliurfa-Turkey: an example using MCDA integrated with GIS

A municipal solid waste (MSW) management system needs solid waste management (SWM) techniques where the presence of a sanitary landfill is vital. One of the most important issues of sanitary landfilling is to locate the facility to an optimal location. Despite the versatility and case-dependent nature of conventional expert-based site selection procedures, the number of sites to be chosen increases with increased population forcing a number of constraints. Consequently, constraints and environmental regulations mechanically mask unsuitable areas, leaving very little areas to be assessed. This turns the situation into a challenging issue for a geographical information system (GIS) used with multi-criteria decision analysis (MCDA), to select optimal site. The study aims to apply MCDA integrated with GIS to select possible sites of a MSW landfill with the same expert and same cognitive parameters while compared with the already present one. Results of this study revealed that conventional expert-based methods could not always evaluate all constraints at the same time and map reproduction is limited when parameter maps are changing rapidly in time. In order to produce cognitive and reproducible analyses, GIS with MCDA integration offers a good solution for site selection issue and forms a good alternative for conventional methods.