Landfill Reclamation Research Articles

UML을 이용한 GIS기반 새만금 DIPSDRM 공법 모바일 관리 시스템 설계 및 구현

The world largest land reclamation project in the name of Saemangeum(Ariul) from 1991 to the present has been implementing in a part of the west coast of Korea. In the Saemangeum reclamation project, the large-scale project cost is used for the landfill reclamation. A number of landfill reclamation methods have been studied in order to reduce the large-scale cost of the Saemangeum project under construction. There are many studies related to the on-site real-time monitoring with mobile systems for operating a wide range of landfill. In order to apply the work method for efficient cost-savings in the landfill operations to the Samangeum project, this paper develops a mobile management system that is composed of a mobile interface module, a data server module for data transmission and storage, and an analysis server module to analyze the input data and derive the results. The mobile system is designed by analysing user`s and system requirements, functional interactions, and data flow using unified modeling language(UML). The user interface is developed for the on-site real-time monitoring through the status and related attributes of land reclamation by using the digital maps of the Samangeum coverage via mobile devices. Finally, a mobile management system would be developed that can provide a 3D GIS service based on the Dry Internal Project Site Digging Reclamation Method(DIPSDRM).

Long-term area change of two tidal flats in Japan and its future projection due to sea level rise

ABSTRACT Udo, K., Takeda, Y., Yoshida, J., Mano, A., 2013. Long-term area change of two tidal flats in Japan and its future projection due to sea level rise This study investigates century-scale area changes of two tidal flats in Japan facing the Ariake Sea and the Yatsushiro Sea, and Tokyo Bay, and their future projections in order to estimate the effect of sea level rise due to climate change on the tidal flats. The long term area change shows notable erosion of tidal flats due to the large scale of landfill reclamation in cities for coastal development and sea reclamation in localities for farmland development, during the period of Japan's rapid growth after 1950s. The future projections using the recent sea bed topography and estimation result of sea level rise show that there is much difference between the future projections with and without consideration of vertical accretion rate. It is estimated that tidal flat erosion up to tens of square kilometers may occur in a long term even only in the study...

Case study of landfill reclamation at a Florida landfill site

A landfill reclamation project was considered to recover landfill airspace and soil, reduce future groundwater impacts by removing the waste buried in the unlined area, and optimize airspace use at the site. A phased approach was utilized to evaluate the technical and economic feasibility of the reclamation project; based on the results of these evaluations, approximately 6.8ha of the unlined cells were reclaimed. Approximately 371,000 in-place cubic meters of waste was mined from 6.8ha in this project. Approximately 230,600 cubic meters of net airspace was recovered due to beneficial use of the recovered final cover soil and reclaimed soil as intermediate and daily cover soil, respectively, for the current landfill operations. This paper presents the researchers’ landfill reclamation project experience, including a summary of activities pertaining to reclamation operations, an estimation of reclamation rates achieved during the project, project costs and benefits, and estimated composition of the reclaimed materials.

Groundwater quality as a geoindicator of organochlorine pesticide contamination after pesticide tomb reclamation: a case study of Franciszkowo, northwestern Poland

The need of surface soil removal during reclamation of the former underground landfills makes environmental monitoring difficult to perform. Environmental quality assessment after reclamation is very important because it provides information about: (1) the efficiency of remediation, (2) the rate of biodegradation of contaminants which were not removed during reclamation works and (3) the possible migration of contaminants from soil and permeable host rocks to surface waters and groundwaters. The concept of geoindicators, which was introduced to facilitate the assessment of environmental changes, can help assess environmental quality at sites previously subjected to reclamation. The groundwater quality is usually used as a geoindicator of inorganic contaminants. This concept was applied to find changes in organochlorine pesticide concentrations in groundwaters after toxic pesticide burial ground reclamation. The aim of this study was to monitor the concentrations of organochlorine pesticides and their metabolites in groundwaters at the former pesticide landfill site after its remediation. The study showed that very high concentrations of organochlorine pesticides and their metabolites in a contaminated soil had a small influence on pesticide concentrations in groundwaters and that this influence decreased in time. It has been 2 years since reclamation of the landfill took place, and the concentrations of organochlorine pesticides in groundwaters dropped to acceptable levels within the current environmental quality standards.

사용종료(使用終了) 비위생매립지(非衛生埋立地)의 순환적(循環的) 사용(使用)을 위한 선별물질(選別物質)의 활용(活用) 가능성(可能性) 평가(評價)

대전시 <TEX>${\bigcirc}{\bigcirc}$</TEX> 권역 택지발지구내 불법매립지 선별 정비사업과정에서 회수된 선별결과물의 재활용성 및 에너지전환 기능성을 평가하였다. 본 연구에서 사용된 순환형 매립정비시스템(SLR-System, Sustainable Reclamation-System)은 수분함량 약 28.0%조건에서 약 91.4 <TEX>$m^3/hr$</TEX> (about 130.61 ton/hr)의 처리 성능을 보였으며, 선별결과물의 회수율과 순도는 선별토사가 약 98.9%와 약99.66%, 선별가연물류가 약 91.8%와 약 92.0%로 각각 측정되었다. 특히, 선별토사의 경우, 입도크기가 <TEX>${\O}$</TEX>35 mm이하로 유기이물질 함량이 0.31%(V/V)로 재활용법적 기준치를 만족하였으며, 최대 약 98.42%까지 재활용이 가능한 것으로 평가되었다 또한, 선별가연물의 경우, 저위발열량이 약 3,636 kcal/kg으로 RDF 품질기준을 만족하였으며 최대 약 84.43%까지 RDF 생산이 가능한 것으로 측정되었다. potential assessment of converting closed non sanitary landfills into sustainable landfill through the reclamation works(= landfill mining project) of illegal landfill discovered in land development site using Sustainable Landfill Reclamation system(SLR-system) was investigated. The SLR system had treatment capacity of 91.4 <TEX>$m^3/hr$</TEX> (130.61 ton/hr) in condition of 28.0% of water content. Recovery ratio and purity of sorted soil were 98.9% and 99.66%, respectively. Sorted combustibles were 91.8% and 92.0%, respectively. Especially, high heating value (HHV) and low heating value(LHV) of combustibles were 4,282kcal/kg and 3,636 kcal/kg, respectively, in considering the energy content and recovery ratio of combustibles. Therefore, combustibles separated from landfill site have higher value than Fluff RDF standard value(3,500kcal/kg) of MOE. RDF can be produced with combustibles by 84.43%. Averaged size and organic foreign matter content of the sorted soil were less than 035mm and 0.31 %(VN), respectively. In addition, concentration of all contents of hazardous matters containing soils met safety standards. Therefore, it is possible to be recycled as refilling and cover materials to rebuild Sustainable landfills by 98.42%.

“Outcasts and Dreamers in the Cities”: Urbanity and Pollution inDead Voices

Dead Voices: Natural Agonies in the New World, by the Anishinabe author Gerald Vizenor, shows how people can come to form a profound relationship to a place even in sites of (in this case, American Indian) displacement and relocation. I argue that Vizenor's text reflects a complete formation of an urban community in its reclamation of landfills and sewers as integral and religiously significant human spaces that must not be ignored. The community in this novel is not only multicultural but also interspecies, as Native ties to physical place and plant and animal species are reinforced. Moreover, I show the importance of this portrayal of urban community and belonging in a Native context, considering that over two-thirds of all Native people in the United States live in urban settings.

Surface Coal Mining and the Reclamation of Tips, Landfills and Quarries – Some Geotechnical Case Studies from Northern England

Underground coal mining has almost disappeared from Northern England as the deeper terrestrial reserves have been exhausted, and only one mine still continues to extract undersea coal. The legacy of this once major industry has been the creation of many tracts of derelict land and abandoned colliery tips. Old tips are associated with potential hazards such as instability, combustion and contamination, and they are often considered to be visually intrusive or an obstruction to re-development. Surface coal mining is also in decline, due to increased public perception that it causes environmental nuisance and damage, which has resulted in the introduction of ever more restrictive planning statutes, even though it provides a cost effective way of restoring old tips and derelict land. A consequence of this has been the identification of a wider relationship between land reclamation works and the extractive industries which includes underground mining and tips, surface mining and quarrying, and landfilling and contaminated land. The design of surface mining projects to incorporate restoration of tips and derelict land often poses difficult geotechnical and geo-environmental engineering problems. Several case studies illustrate how some of these problems have been resolved for specific restoration projects.

Design and operation of landfills for optimum stabilization and biogas production

Most municipal landfills are constructed and operated with exposure to intermittent rainfall. Infiltration of rainfall, together with the inherent moisture content of landfilled wastes, promotes leachate production and accelerates rates of conversion of waste constituents. As these conversion processes proceed, waste stabilization occurs, leachate quality changes, and biogas is released in correspondence with the prevailing phase of stabilization. The intensities and temporal and spatial dimensions of these phases are waste-specific, a function of landfill design and operational strategy employed, and characterized by changes in physical, chemical and biological indicator parameters. Recognizing that most landfills exist as microbially mediated anaerobic waste conversion processes, with the sequential phases of acid formation and methane fermentation accounting for the majority of waste stabilization being accomplished, a fundamental understanding of these two principal phases of landfill stabilization is provided and used as a basis for developing guidance for controlled landfill design and operation. This guidance emphasizes optimization of stabilization efficiency, establishes cost-effective procedures for leachate management, and promotes regulated biogas production and utilization. To accommodate these objectives, the benefits of converting landfills into controlled bioreactor systems through regulated leachate generation, containment, collection, and in situ recirculation for accelerated waste stabilization and integrated biogas management are described, and opportunities for ultimate leachate disposal, biogas utilization and landfill reclamation are illustrated and compared to relative costs of other management options.