Modeling leachate generation and transport in solid waste landfills. The paper discusses the characteristics of leachate generated from municipal solid waste landfilling sites of ludhiana city, punjab india. Jul 23, 2015 specification for landfilling operation waste subjected to landfilling shall be compacted in thin layers by compactors to achieve high density of the waste. These subtitle d requirements specify isolation of the wastes within a plasticsheeting and compactedclaylined tomb, collection of leachate, monitoring of. Apart from municipal waste the following types of waste are deposited at the landfill. Without sufficient leachate collection the longterm efficiency of the liner system is problematic, and the stability of the waste body cannot be ensured. Municipal solid waste landfills water quality issues. Landfill leachate is generated by excess rainwater. Control of leachate discharge into the environment and base sealing systems. Creed, environment energy and waste research center, limay, france.
Landfilling methods area method wastes are spread and compacted on the surface of the ground cover material is spread and compacted over the layer of waste suitable on flat and gently sloping land and where the groundwater table is high trench method involves the excavation of a trench excavated soil serves as cover. Leachate samples were collected and analyzed for various physicochemical parameters to estimate its pollution potential. The waste management licensing regulations, 1997 2002 provide for the licensing by the agency of waste recovery and disposal activities. Control of water input and surface sealing systems. These problems include possible contamination of the groundwater and. Inevitable consequences of the practice of solid waste disposal in landfills are gas and leachate generation due primarily to microbial decomposition, climatic conditions, refuse characteristics and landfilling operations. Pdf toxicity analysis and public health aspects of. Liquid waste socalled leachate contains organic and inorganic compounds and some pathogenic.
This study aims to serve as a reference for the implementation of the most suitable technique for reducing the negative environmental. Leachate samples were collected in october end 2015 to july 2016 at monthly once as fresh samples from the landfilling sites located km from gulbarga city. When the total depth of landfill exceeds 9 m30 ft from. Pdf treatment of leachate from municipal solid waste. Solid waste landfills big and small been around for a long time most economical method of solid waste disposal landfilling is a fact. Glossary of waste management terms waste management. Approximately 91% of all household and commercial waste collected in 1998 in ireland was landfilled. General information structure and purpose of these guidelines a landfill is an engineered, inground facility for the safe and secure disposal of societys. All the three are unlined and fall under the category of uncontrolled solid waste disposal facility. Abstract the paper discusses the characteristics of leachate generated from municipal solid waste landfilling sites of udnoor village, kalaburagi district karnataka. An overview of municipal solid waste management and landfill. The generation of leachate is caused principally by precipitation percolating through waste deposited in a landfill. Recovery of faecal indicator and pathogenic microbes from landfill leachate. As the main challenges in waste management are the reduction and proper treatment of waste and the appropriate use of waste streams, the book satisfies the needs of a modern landfill, covering waste pretreatment, in situ.
Nov 24, 2004 sanitary landfilling and leachate control strategies leachate problems in landfills. There are many potential environmental problems associated with the landfilling of waste. Landfill leachate is the liquid that seeps through or out of waste deposits in landfill sites. Landfilling of waste shall establish an conditions that shalld provide for disable and reduce hazardous impacts on human health and the environment throughout whole landfill life cycle, particularly the pollution of surface and ground waters, soil and air. Environmental pollution caused by the landfill leachate has been one of the typical dilemmas of landfilling method. Leachate collection and treatment must be stressed as a basic requirement. The interment of municipal solid waste in landfills is one of the most common disposal methodologies adopted in most of the countries.
Even the best planned solid waste collection and disposal. Leachate generated from these landfills generally gets collected in. Leachate samples were collected and analysed for various physicochemical parameters to estimate its pollution potential. Characterization of leachate and its impact on surface and. The majority of municipal solid waste both in the us and globally is placed in landfills. Introductionin developing countries like india, landfilling is the most commonly practiced form of municipal solid waste msw disposal due to its economic advantages. Alyaqout and hamoda evalu ated leachate in the arid climate of kuwait from active and closed landfills. Us epa in adopting subtitle d msw landfilling regulations because in a drytombtype landfill in which an attempt is made to isolate the wastes from water the wastes in the landfill will be threat to generate leachate for very long periods of time wellbeyond the 30year required minimum postclosure care period. Water pollution is caused by the formation and movement of leachate, which is produced by the infiltration of water through the waste material. Graded requirements are then set for all aspects of landfilling, including public participation. Pdf treatment of leachate from municipal solid waste landfill. Pdf characterization of leachate from municipal solid.
Inactivation of enteric bacteria and viruses in sanitary landfill leachate. Leachate treatment leachate recirculation pump 75cm thick clay liner drainage facility cell separation system for inert and stable residual waste leachate treatment will be a combination of physical, biological and chemical clay linerlayer with permeability of 107 cmsec or an hdpe liner 1. Landfill systems, sanitary landfilling of solid wastes, and. Leachate quantity, quality and landfill gas emissions also would be reduced. It is the policy of the swedish environmental protection agency sepa to develop sustainable strategies for existing as well as future solid waste.
The waste management act, 1996 designates the agency as the licensing authority for landfills. The nature of leachate varies significantly among landfills depending on waste composition, climatic con ditions such as rainfall rate, landfill age and landfilling technology 912. Leachate is the liquid that passes through the landfilled waste and strips contaminants. Control of waste input and pretreatment before deposition. Solid waste landfills, second edition 2016 1 part a. Characterization of leachate from municipal solid waste msw. The purpose of this module is to learn about municipal solid waste landfilling. The burial of municipal solid waste in landfills is the most common disposal alternative in most countries. Redon lsee, laboratory of water and environmental sciences, ensil, limoges, france. Though it is considered most costeffective means of waste disposal, but poor management practices specially in developing countries like india are the major causes of environmental pollution. Concepts, processes, technology provides information on technologies that promote stabilization and minimize environmental impacts in landfills.
Landfills, solid waste, leachate, mathematical models. This approach has the potential to be a more sustainable, economical, and environmentally sound method of managing msw relative to traditional sanitary landfilling practices. Pdf characterization of leachate from municipal solid waste. Landfilling of waste has increased dramatically over recent years and there have been many examples of landfills which are unacceptable on environmental and health grounds. Leachate collection systems consist of a drainage layer, the drainage pipes, shafts, and collection pipes. Delhi, capital of india, generates approximately 7,000 metric tons. Leachate generation is a major problem for municipal solid waste msw landfills and causes significant threat to surface water and groundwater. Study of the organic matter contained in leachate resulting. Analysis of the role of the sanitary landfill in waste.
Assessment of heavy metals and organics in municipal solid. Municipal landfill leachate management maryam pazoki springer. Leachate accumulates in the waste footprint of the landfill. Municipal solid waste management and landfilling technologies. Leachate is the liquid produced when water percolates through solid waste and contains dissolved or suspended materials from various disposed materials and biodecomposition processes. Leachate, mainly from younger landfills in ireland is, however. Prior to the commencement of monsoon season, an immediate cover of 4065 cm thickness of soil shall be placed on the landfill with proper compaction and grading to prevent infiltration. Landfilling is one of the major municipal solid waste msw disposal methods practiced worldwide. Groundwater pollution by municipal solid waste landfill leachate. Landfilling of pretreated waste improves landfill behavior, characteristics, and operation. Eu regulations, such as the landfill directive1, have significantly reduced the volume of leachate produced, a study on leachate management in ireland has found. Landfilling in ireland the environmental protection agency. It is predicted by the comparison of carbon content in the fresh and pretreated msw that resultantly increases. Parcels of land that are designated and permitted to perform landfilling activities.
Landfills were often overused in past, everything went into them modern facilities discriminate in waste acceptance. Leachate is a widely used term in the environmental sciences where it has the specific meaning of a liquid that has dissolved or entrained environmentally harmful substances that may then enter the environment. Electronic wastes and msw landfill pollution of groundwater g. Pdf leachate generation is a major problem for municipal solid waste msw landfills and causes significant threat to surface water and groundwater find. In developed countries, welldesigned sanitary landfills are used which typically include bottom liners, leachate collection systems, leachate treatment, gas collection, gas treatment, final covers, and air and water monitoring systems. Due to its economic advantages, landfilling is still the most dominant treatment method used worldwide for municipal solid waste msw, especially in developing. A practical solid waste control program is within the means of any community. It is most commonly used in the context of landfilling of putrescible or industrial waste. Nov 24, 2004 sanitary landfilling and legal requirements. Delhi, capital of india, generates approximately 7,000 metric tons of msw daily.
Municipal waste alone accounted for 2 million tonnes. Municipal waste means household waste as well as commercial and other waste which, because of its nature or composition, is similar to household waste. The dump is today not considered good landfilling technology, but has, however, been included as a. Treatment of leachate from municipal solid waste landfill. Pdf management of municipal solid waste landfill leachate. Landfills that are closed may still be accepting waste for recovery, e. In rapidly growing communities a master plan for the col lection and disposal of solid waste, based on a thorough engineering analysis, is vital. However, the leachate arising from such landfills is now being recognized as a potential health risk to both surrounding ecosystems and human populations. This is one of a group of international reference books which address this problem, specifically in this case covering the strongly contaminated wastewater developed from landfills. Wastes in landfills consists of not only solid but also liquid.
Health and environmental effects of landfilling and. Treatment of landfill waste, leachate and landfill gas. Leachate treatment leachate recirculation pump 75cm thick clay liner drainage facility cell separation system for inert and stable residual waste leachate treatment will be a combination of physical, biological and chemical clay linerlayer with permeability. Present and longterm composition of msw landfill leachate. Impact of municipal solid waste landfill on environment a.
Landfill sites act as ecological reactors where wastes undergo physical, chemical and biological transformations. Table ii11 variation of raw leachate quality with different waste types survey of. The design and operation of municipal solid waste msw landfills as bioreactors continues to be a topic of great interest in the solid waste community. Once in contact with decomposing solid waste, the percolating water. Landfill systems, sanitary landfilling of solid wastes. Volume of leachate and environmental impact from landfills. Though it is considered most costeffective means of waste disposal, but poor management practices.
Leachate from a landfill varies widely in composition depending on the age of the landfill and the type of waste that it contains. As the water moves through the waste, it dissolves components of the waste. Characterization of leachate from municipal solid waste. Proper drainage shall be constructed to divert runoff away from the active cell of the landfill. Landfill facilities must be designed to protect the environment from contaminants, which may be present in the solid waste disposed in the unit. Technical guidebook on solid wastes disposal design, operation and management second edition 2010 by national solid waste management commission. Landfill leachate treatment case study, srv atervinning. In chinas, the leachate generated by infiltrated precipitation after hdpe geomembranes in top cover started failing, contributed more than 60% of the overall amounts over 100 years of landfilling. The alternative is almost insurmountable future prob lems. Municipal solid waste msw dumpsite constitutes a major anthropogenic point source of leachate contamination to the ambient groundwater and poses a significant threat to the geoecosystem. It usually contains both dissolved and suspended material. Pdf landfills are one of the most historical and ordinary methods of waste disposal and still remain in many parts of the world.
Chemical composition and hazardous effects of leachate. The book discusses leachate landfill management issues such as quality, quantity. Information will be provided that describe the components of a landfill, the processes which take place in a landfill, and basic landfill design. Leachate samples were collected from the base of solid waste heaps where the leachate was drained out by gravity. This would include the entrance, staging area, buffer area and the area that will accept waste for disposal the waste footprint area. A waste disposal plan and a final restoration plan should also be developed. Hence, critical factors for sustainable landfilling are landfill liners, the thickness of the soil cover, leachate collection, landfill gas recovery. Sep 23, 2020 landfilling for solid waste disposal is preferred in many municipalities globally. Impact of municipal solid waste landfill on environment. Landfilling of waste shall establish an conditions that shalld provide for disable and reduce hazardous impacts on human health and the environment throughout whole.
1128 934 1596 850 1705 1402 1790 791 1146 1361 614 361 1796 1474 806 1410 1698 290 181 767 107 1807 1236 1058 38 824 1827 8 110 175 123 603 291 1422 406 671 1242 592