Land For Waste Disposal Research Articles

Land scarcity as a site selection challenge for the management of municipal solid wastes in Accra, Ghana

Some of the major contributing factors of poor solid waste management and disposal in developing countries are proximity of available land for waste disposal and attitudinal factors. This research used Accra, Ghana as a case study which has a land size estimated to be 3,245 km2 and a population growth rate of 3.1%. The outcome of the research projects that with Accra population of 4,010,054 and waste generation rate of approximately 0.5 kg/person/day, land proximity for waste disposal will no more be available by 2040. This will worsen the current waste management menace in the municipality if the situation remains unchanged. This research also recommends the contingent valuation method for the determination of adequate compensation for the associated communities to release land for efficient waste management and disposal in the region.

Land scarcity as a site selection challenge for the management of municipal solid wastes in Accra, Ghana.

Some of the major contributing factors of poor solid waste management and disposal in developing countries are proximity of available land for waste disposal and attitudinal factors. This research used Accra, Ghana as a case study which has a land size estimated to be 3,245 km2 and a population growth rate of 3.1%. The outcome of the research projects that with Accra population of 4,010,054 and waste generation rate of approximately 0.5 kg/person/day, land proximity for waste disposal will no more be available by 2040. This will worsen the current waste management menace in the municipality if the situation remains unchanged. This research also recommends the contingent valuation method for the determination of adequate compensation for the associated communities to release land for efficient waste management and disposal in the region.

Application of Geographical Information Systems (GIS) and Analytical Hierarchy Process (AHP) in the Selection of A Suitable Sanitary Landfill Site for Solid Waste Disposal And

Shortage of land for waste disposal and inappropriate dump sites is the biggest problems in the Niger Delta Area of Nigeria, Warri in particular. This problem has its negative impact on human and environment owing to the menace often caused by indiscriminate dumping of solid waste. The swamping nature of the soil and the irregular topographic nature of the land hinder the flow of accumulated water formed by rains. This makes runoff during the rainy season almost impossible leading to flood in most cases. To select an appropriate site for landfill, there is need to consider different alternative areas using numerous criteria’s before making decision. In this study, geographical information systems (GIS) and analytical hierarchy process (AHP) were employed to analyze selected criteria’s that can influence the selection of a suitable site for sanitary landfill application in Warri, Delta State, Nigeria. The selected criterions include; flood extent, stream, rivers, swampy areas, ground water, built-up areas, roads, slopes, airport, palaces and point of interests (POIs). Features of interest such as roads, built-up areas, swampy areas, rivers and streams in the SPOT 5 satellite imagery were converted to vector format by digitizing in order to create a geographic database dataset. Weighted Overlay Linear Combination for map superimposition was adopted while constraints and factors were employed as the criteria for decision-making process. Suitability rating value of 1 to 5 meaning; not suitable, least suitable, moderately suitable, highly suitable and mostly suitable was use as the final index for land suitability. Results of the weighted overlay revealed three potential sites within the study area and they include; site 1, site 2, and site 3 with 3.334, 5.418 and 47/582 hectares of land suitable for sanitary landfill applications. Keyword: Sanitary landfill, weighted overlay, Suitability rating, geographical information systems (GIS), analytical hierarchy process (AHP) DOI : 10.7176/JNSR/10-2-02 Publication date: January 31 st 2020

MSW Landfill Site Selection for Hyderabad City Using GIS and AHP

One of the significant difficulties in most of massive urban areas is lack of land for waste disposal. According to UN world population prospects, about 54% of the population resides in urban areas which are anticipated to rise to 66% by 2050. India is estimated to add 404 million urban dwellers by 2050. The substantial increase in the population growth has lead to the immense generation of waste. 5000 TPD of municipal solid waste is being generated from Greater Hyderabad Municipal Corporation (GHMC). In many places, the solid waste generated is dumped unscientifically onto the open lands. So there is a need for optimized potential site selection for disposal of waste. This paper mainly focuses on selection of potential site for the disposal of municipal solid waste generated from GHMC area using Geographic Information System (GIS) and Analytical Hierarchy Process (AHP). In AHP, weights were allocated to each criteria based on relative importance with respect to each other and ratings are assigned depending on its magnitude of impact. Various factors are considered in the siting process were categorized into environmental and economic criteria. Road networks and slope were clustered under economic basis and water bodies, sensitive sites, groundwater levels and land use were clustered under environmental basis. For all criterions, thematic maps were generated and then combined with AHP using GIS for site selection. Keywords: Landfill site selection, GIS, AHPs Cite this Article T. Srinivasa Rao, I. Naga Babu, Chandana N. MSW Landfill Site Selection for Hyderabad City Using GIS and AHP. Journal of Remote Sensing & GIS. 2018; 9(1): 15–25p.

Sustainable management of household solid waste

In most countries, the majority of household solid waste is landfilled because of associated low capital, operation and maintenance costs. However, many existing landfills have exhausted their handling capacities and new facilities are faced with the problem of siting. Alternatives to traditional landfill practice are required to achieve sustainability in managing solid waste. This manuscript discusses an advanced landfill concept, referred to as a biocell, which involves sequential application of anaerobic degradation, aerobic decomposition and waste mining in a single waste cell. Biodegradation of waste in the biocell is enhanced through leachate re-circulation coupled with landfill gas collection in the anaerobic phase and air injection in the aerobic phase. The biocell is expected to realise sustainability by reusing the location where solid waste is treated, thereby eliminating the need of new land for waste disposal. Environmental controls also eliminate ground/surface water contamination and harmful landfill gas emissions.