Using boolean and fuzzy logic combined with analytic hierarchy process for hazardous waste landfill site selection: A case study from Hormozgan province, Iran (original) (raw)
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Landfill Site Selection Using Fuzzy Logic & AHP & WLC (Case study: Razan city - Iran)
2021
The landfill has the potential impacts of environmental pollution if not properly selected, which can be irreparable because the environment and health components are human and other creatures. The ultimate goal Locating the most appropriate place to achieve the fewest adverse effects to the environment and natural resources and economically the most cost and engineering perspective to have the best features. This study aims to locate a place for a landfill in the city of Razan. The ARC GIS 9.3 software and the Analytical Hierarchy Process (AHP) are used. The data layers such as elevation, slope, aspect, soil, climate, and vegetation were determined and collected. Then by using the analytical hierarchy process (AHP), weight parameters were given. Then parameters were standard in the GIS environment. The layers obtained the value by multiplying the analytic hierarchy process and data layers together with (WLC) method, and this is the final layer that can be extracted. The final plan ...
Sustainable development (SD) can be defined as the right and correct usage of various resources to promote the quality of life. Using productive resources and recycling them properly play an important and effective role in health and growth of a society. Waste, which because of its large amount and being returnable to the nature considered as a productive resource, is one of the most environmental problems. The present study tries to examine different factors effecting on landfill sites and the value of each while introduces usage of new algorithms to site selection and decision making practices. Optimal areas for landfill municipal wastes were selected by Boolean, fuzzy and analytic hierarchy process (AHP) methods using the GIS techniques. Effective factors in landfill were generally classified into 4 main and 15 secondary criteria. Site selection in the area carried out by different algorithms, then final results were extracted and AHP method was selected with respect to field inspections, volume evaluation of place, and value of local land rather than Boolean and fuzzy ones. Site selection on the one hand and careful management of landfill operation on the other hand reduce the pollution caused by this natural cycle to the lowest possible level. Thus, minimizing waste disposal and maximizing material recycling must take priority over all other municipal waste management plans.
Land
In recent decades, population increase and urban development have led to catastrophic environmental consequences. One of the principal objectives to achieve “sustainable development” is to find suitable landfills. Due to their physical characteristics, which have led to a lack of landfill sites and closeness to water bodies, agricultural fields, and residential areas, the cities of Javanrood, Paveh, and Ravansar were chosen as the necessary research regions. On the other hand, these landfills are unable to accommodate the growing urban population. Therefore, this study attempts to develop a framework for spotting the most suitable sites for landfill construction with these three cities as case studies. For this, 10 important driving factors (9 factors and 1 constraint) in landfill site selection were generated. Second, for the fuzzy membership function, the analytic hierarchy process (AHP) method was employed for the standardization of criteria and determining the weight of the driv...
MethodsX, 2019
Landfilling with simplicity and economic advantages is the most common element for waste management in both developed and developing countries. Landfill site selection in a proper way is an important municipal planning process which prevent environmental issues including water pollution imposed for insanitary landfills. The present research was developed to exhibit a simplified method of multi criteria decision making (MCDM) and Fuzzy memberships in GIS environment to ascertain best landfill sites for Shiraz county, located south of Iran. 15 most common sub-criteria, documented in literature and implicated by Iranian environmental protection organization (IEPO) including surface water, ground water, land use, distance to well, soil type, slope, protected area, fault in environmental group, residential area, road, airport, village, infrastructure, historical area, wind direction in socioeconomical group were selected and the weight of each criterion was determined based on expert's knowledge with use of analytical hierarchy process (AHP). The results of the present research are as follows: Distance to residential area and groundwaters with weight of 0.36 and 0.28 were recognized as the most important criteria for landfill site selection. The six suitable areas for landfill in Shiraz county is 1.003% of total area equal to 8710 ha. AHP and Fuzzy memberships has a great potential and ability for landfill site selection.
J Environ Health Sustain Dev 2020, 5(3): 1043-1052, 2020
Landfill siting is a difficult, complex, and protracted process, which requires evaluating different criteria. A suitable site should be located to dispose the municipal solid wastes hygienically (sanitary landfill), which is one of the fundamental subjects related to the environmental stability of the human settlements. The aim was to select a suitable waste disposal area using fuzzy-Analytic Hierarchy Process (AHP) models. Materials and Methods: To conduct this study, the information about elevation, slope, soil, drainage, vegetation, land use, population, and roads were produced and corrected in layers called shape files using the Geographic Information System (GIS) software. Finally, weights were applied in expert choice software by combining and overlapping information layers in GIS. Results: Based on the fuzzy-AHP model, 6 sites were identified as suitable areas for municipal waste disposal. Among the selected sites, one site was highly suitable, two were suitable, and three sites were moderately suitable. These areas with an area of 83.8 km 2 are located along the west part of the city adjacent to the Iraqi border. The unsuitable sites for municipal waste disposal were located in the eastern and northeastern areas. Conclusion: However, applying fuzzy-AHP model provides the necessary conditions for assessing effective relationships among discrete criteria. In the end, combining these models and their findings represented advantages of this kind of modeling and improved scoring in all of these pixels.
Environmental Earth Sciences, 2016
Landfilling is the most common method used for disposal of solid waste and selection of suitable landfill for municipal solid waste management is important part of urban planning. The aims of this paper are determining the constraints, criteria for landfill site selection according to present legislations in Iran, zoning potential of Shabestar city for construction of municipal landfill and selection of the most suitable sites. At first, by reviewing of internal and external literature, the criteria which were necessary to achieve the aims of study were determined. Then, conceptual model of landfill site selection steps and process was developed. After that, the required maps were collected from relevant organizations and prepared using geographic information systems (GIS) tool in order to use in the next steps. Finally, all criteria maps were standardized by fuzzy functions and entered in mathematical combination model. In this study, the fuzzy functions in ArcGIS 10 including linear, large, small and Gaussian were used. Weighting of criteria was performed by analytical hierarchy process (AHP) method using expert choice application and weighted linear combination (WLC) was chosen for integration of maps. Preliminary results of zoning showed that nearly 6.2 % of the study area has good suitability for municipal landfill. To select the best site among the candidate sites for Shabestar city, at first the sensitive analysis was performed and then the best site was selected based on required area, soil depth, dominant wind direction and visibility from residential area.
SN Applied Sciences
Recognizing potential sites for landfill has increasingly become an important waste management strategy around the world. This study aims to determine municipal solid waste (MSW) landfills in SaharKhiz Region located in Gilan by comparing Fuzzy logic and Boolean logic. Fuzzy logic, which has been used in this research, is based on weighted linear combination (WLC); however, the utilized Boolean logic is considered only to determine the accuracy and validity of every method. At first, the Boolean logic using a geographical information system (GIS) is used to recognize potential and excluded zones, based on zero and one value system. In the next phase, Fuzzy logic is used, between zero and one, to standardize information layers, based on their type (increasing or decreasing). The final weight of every layer was determined using the analytical hierarchy process. Finally, the WLC method was used to integrate layers in the GIS environment to provide the final site suitability map in five classes of Fuzzy membership degree. The results show that Fuzzy logic, based on WLC, has more flexibility to resolve conflicts of human judgment, and it also has higher accuracy than Boolean logic in the selection of optimal landfill sites for MSW in SaharKhiz Region, Gilan Province, based on ecological and socioeconomic parameters.
2020
Today, with the increasing urban development, construction waste is a major problem for urban life. The city of Qazvin is no exception to this, and researching an optimum landfill site is an important necessity. The purpose of this research is to optimum site selection areas for landfill of Construction wastes using the geospatial information system (GIS) in a boundary area of Qazvin county which taking into account the terms and conditions of organizations such as the Municipality, Waste Management and Environmental Protection Organization. In this study, 16 layers of information including geology, soil type and permeability, landuse, climate, river distance, distance from protected areas, aspect, etc. in the boundary of Qazvin county were used. After producing the preliminary maps, the sub-criteria of each information layer are classified and evaluated and the values are converted to fuzzy values between zero and one. Then, fuzzy analytic hierarchy process (FAHP) method have been ...
Arabian Journal of Geosciences, 2020
Landfill site selection is one of the important steps in the management of municipal solid waste. Due to the detrimental environmental, economic, and ecological effects of landfill site selection, site selection must be done carefully and scientifically. This study aimed at finding the optimal site selection for a municipal landfill in Kerman City that has the least risk in the environment and is economically optimal. At first, the effective criteria were identified and quantified by fuzzy method. Then, the weight of criteria was also determined by analytic network process. Combination of multi-criteria decision-making method and geographic information system was used to analyze data. Then, using environmental impact assessment method, the selected landfill from aspects such as physical and chemical; biological and ecological; sociological and cultural; and economic and operational components were investigated at two stages of construction and operation. The results of multicriteria decision-making showed that 1.86% of the land area had a high capability for landfill and 19.06% of the area had no capability. Finally, in the field study, three sites were selected because of their greater area, lower slope, and the proximity to the city as the best options for landfill through field survey. Of these three options, site 1 has a higher priority due to its better distance, greater area than the other two sites, and reduction in landfill transport costs. Also, environmental impact assessment of the selected landfill (option 1) showed that, in general, the negative impacts on the environment at the operation stage due to being in the group of very low and low impacts do not have much intensity of action, and this is due to the desired environmental conditions of the selected landfill for construction of a sanitary landfill. The research findings and field observations also showed that the weighted linear combination method and its integration with analytic network process technique have the flexibility and high potential for model decision-making and implementation and provided more accurate and objective results. Moreover, it is more reliable than other methods including analytic hierarchy process and fuzzy and can be used elsewhere to select the best landfill site selection.
City and Environment Interactions, 2020
Rajshahi is considered as one of the most growing cities in Bangladesh with enormous potentialities for physical and environmental development. The city has taken over air pollution, and it should now shift their focus on preparing to face the consequences of rapid urban growth. With unorganised solid waste management even after the absence of industries and mega industries, the city has a chance of collapsing in the period of potential future massive development movement. In order to combat this potential risk during that period, the landfill can be applicable in this developing city being the cheapest and straightforward method. Concerning this, this study attempts to identify suitable places to dispose of Metropolitan Solid Waste (MeSW). To select suitable sites for landfills, several critical factors, such as ge-ology/hydrogeology, land use, aspect, slope, and distance from the surface water body, settlements, roads, railway, and protected areas, were chosen according to standards and regulations. Weights of criteria are determined using the Fuzzy Analytical Hierarchy Process (F-AHP), and then the weighted overlay analyses are used to nominate landfill sites. According to findings extracted, only about 6% area is highly suitable, and 22% of the area is moderately suitable for the landfill site development. Considering parameters such as minimum required area for landfills, buffer distance from residents, major roads and agricultural lands, political and management issues, and having discussions with key personnel, the study opts two potential sites for landfill development. Inappropriate landfill locations other than this will lead to adverse environmental, economic, and ecological externalities.