Landfill Design

Among prevalent methods of disposal for municipal solid waste, landfilling is the most common one. A landfill requires a piece of land and receive a huge amount of wastes for a certain period of time. Many landfills all around the world are located into or nearby urban areas where the land is scarce and highly demanded. Therefore, an important question arises on how to re-use this piece of threatening land. The aim of this study is to highlight the benefits of landscape work with the roles of landscape architects or equivalent disciplines to succeed a sustainable development of a landfill site not only after the landfill being closed but also from the beginning of it. To achieve this, a comprehensive investigation has been done among related literature to address these issues and prove that landscape work is one of the key factors that can lead a landfill project to a more successful and beneficial one which eventually makes the project sustainable. The findings of the study are use...

Landfills are the common method of waste disposal. A closed landfill site can be an eyesore land and cause environmental hazardous impacts on surrounding areas. A sustainable solution for redevelopment of a closed landfill site, returns the land to an attractive and beneficial after-use. This study aim to identify potential sustainable solutions and factors in the redevelopment of closed landfill sites. The paper critically reviews the literature regarding vital understanding of the redevelopment process. The study also analyzed the successful landfill redevelopment projects in a wide range of time and locations to suggest the best end-use option. Additionally, the study offers an approach for integrating the social, economic and environmental benefits through the sustainable redevelopment solution contributing to the universal sustainable development and green built environment.  

Among prevalent methods of disposal for municipal solid waste, landfilling is the most common one. A landfill requires a piece of land and receive a huge amount of wastes for a certain period of time. Many landfills all around the world are located into or nearby urban areas where the land is scarce and highly demanded. Therefore, an important question arises on how to re-use this piece of threatening land. The aim of this study is to highlight the benefits of landscape work with the roles of landscape architects or equivalent disciplines to succeed a sustainable development of a landfill site not only after the landfill being closed but also from the beginning of it. To achieve this, a comprehensive investigation has been done among related literature to address these issues and prove that landscape work is one of the key factors that can lead a landfill project to a more successful and beneficial one which eventually makes the project sustainable. The findings of the study are useful for those who are engaging in landfill industries both practitioners and academicians and will contribute knowledge about sustainable development of landfill from a different perspective.

ABSTRACT This paper presents the main aspects and experiences gathered during the phase of investigations and design for the solid waste landfill in the municipality ″Centar Zupa″ in Republic of Macedonia. One of the specifics of this landfill is that it is located not far from the Lake Debar. This situation asked for more detailed and sensitive approach to the problem. A brief overview of the necessary approach in a treatment of such problems is given, having in mind the present situation in this field in country. Some basic elements of the technical solutions are given, as well as the conditions for protection of the natural environment and geotechnical conditions for construction. Some of the results form the investigations of the natural geological media and materials for daily and final covering are also given. An adequate attention is given on the results from stability and stress-strain analyses. A necessity for preparing of specific laboratory test of shear strength and deformability in a large scale in order to simulate the composition and properties of the solid waste is underlined. One of the main goals of the paper is to animate the scientific and public institution that a serious approach is necessary in a treatment of problem with solid waste landfills in the country. Authors believe that the applied approach of complete engineering will be a positive example for the future works in this field.

The use of clay as a landfill cover system is a choice of alternative materials that are widely used in almost all the existing landfill system in Indodonesia and in the world. In addition to the relatively low cost of procurement is also available in almost all regions in Indonesia. However, alternative reliable overburden landfills has not been much discussed and researched. The purpose of this study is to design an ideal final cover layer landfill technically and mechanically. The results showed that the addition of fly ash and palm oil fiber (POF) between 10% of fly ash and 0.5% of POF can enhance the mechanical value of soils. the compressive strength of soils increase from 39.4 kPa to 89.0 kPa or rose by 129%, decreasing the value of soil hydraulic conductivity is to be 1,2x10-7 from the initial value of 1,17x10-6 or decreased by 850.4%, increase in soil friction angle of 8.55° to 24 °, and lowering the soil liquid limit of 33.48% to 24.5%, decreasing of swelling potential of 8 % to only 1.5% at the end of the wetting cycle, reduce the cracking intensity factor (CIF) from 1.96% to zero cracks. Mechanical behavior is heavily influenced by the nature of fly ash which has of a small water absorption and change the water in the soil for the pozzolanic reaction and produce calcium hydrate silica (CSH), in which the reaction is to form granules (binder) in the soil so that the soil becomes dense and hard, while palm oil fiber have cellulose and lignin as dominant compounds that tend to have high water absorption but serves to strengthen the fiber tensile force between the fibers and the soils surface due to adhesion forces so that the soil is not easily collapse and reduce the potential shrinkages and cracking of the soils.. I. INTRODUCTION Cracks behavior of natural clay used as Compacted clay liners (CCL) is the main problem of the structure of clay. because it will lead to cracks in the overburden landfills. and consequently will reduce the sealing function of the cover layer dramatically. From the standpoint of engineering, landfill cover materials must have sufficient technical properties, such as low hydraulic conductivity, sufficient compressive strength, high tensile strength, and flexibility. The drying process will lead to the behavior of cracks in clay soil will cause the surface of the liquid migrating into landfills causing increased liquid and gaseous waste. In the end the potential for contamination of soil and ground water will increase [14]. Currently there are several possibilities in the use of other materials to improve the performance of the clay as a hydraulic barrier in landfills. Research to design a cover liners that is ideal in landfills, which is to analyze the mechanical behavior of soft soil, the behavior and development of shrinkage and cracking of soft soil, stabilized fly ash and reinforcement fibers whether it can increase the capacity of soft soils as final cover landfill, it also makes models of laboratory hydraulic conductivity of soil stabilization fly ash and fiber in its effectiveness to retain surface run on and leachate from the landfill.