Solid Waste Management and Transport Route Optimization Using Geographic Information System in Lagos Metropolis, Nigeria

2020 ◽  
Vol 15 (3) ◽  
pp. 96-101
Author(s):  
Oluwaseyi Joseph Afolabi

With an unprecedented population and rapid urbanization, the solid waste collection and transportation has become a major challenge in Lagos metropolis. The main objective of the study was to optimize routes for solid waste collection and disposal using Geographic Information System (GIS) in order to improve solid waste management system in Lagos metropolis. Data on the GIS Network Analyst was used to determine movements between the transfer loading stations and the landfills to determine the collection time, travel distances, optimized routes and alternative routes for solid waste disposal while maximising total solid waste collection and disposal for environmental sustainability. Based on the findings, the study therefore recommends possible interventions such as regular collection of solid waste, proper management of the transfer loading stations and landfills, and that the collection of solid waste should be given more attention because it is important in the development of cities. Keywords: Solid wastes, Transportation, Route Optimization, GIS, Lagos metropolis

2019 ◽  
Vol 45 (3) ◽  
pp. 273-286
Author(s):  
Diogo Appel Colvero ◽  
Ana Paula Duarte Gomes ◽  
Luís António da Cruz Tarelho ◽  
Manuel Arlindo Amador de Matos ◽  
José Carlos Martins Ramalho

Most Brazilian municipalities are small, i.e., with less than 50,000 inhabitants. In the State of Goiás, for example, 91% of the municipalities are small. Of these, only 4% have their municipal solid waste (MSW) disposed in authorized landfills. Thus, the present study aimed to propose a municipal solid waste management facility (MSWMF) shared between two small municipalities of the microregion of Chapada dos Veadeiros, in Northeast Goiás. The reason for selecting this microregion is that it is composed only of small municipalities that use waste dumps for the disposal of their MSW. For this purpose, the areas subject to approval or restricted for the installation of a MSWMF were identified with the aid of a geographic information system (GIS). Also, the host municipality (HM) of the MSWMF proposed for Campos Belos and Monte Alegre de Goiás was defined with the use of mass geometry methodology. According to the results obtained, 59% of the territories of these two municipalities that will integrate the proposed MSWMF are restricted for the installation of landfills, and Monte Alegre de Goiás was selected to host the landfill.


2018 ◽  
Vol 77 ◽  
pp. 500-515 ◽  
Author(s):  
Diogo Appel Colvero ◽  
Ana Paula Duarte Gomes ◽  
Luís António da Cruz Tarelho ◽  
Manuel Arlindo Amador de Matos ◽  
Kamila Almeida dos Santos

Economies ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 54 ◽  
Author(s):  
Hanke Ndau ◽  
Elizabeth Tilley

Insufficient staff, inappropriate collection vehicles, limited operating budgets and growing, hard to reach populations mean that solid waste management remains limited in most developing countries; Malawi is no exception. We estimated the willingness to pay (WTP) for two hypothetical solid waste collection services. Additionally, we tested the impact of the WTP question positioning relative to environmental perceptions on respondents’ WTP. The first scenario involved a five minute walk to a disposal facility; the second scenario involved a 30 min walk. Additionally, the order of the question was randomized within the questionnaire. A WTP value of K1780 was found for the five minute walk scenario when the question was placed first, and K2138 when placed after revealing the respondent’s perceptions on the environment. In the 30 min walk scenario, WTP was K945 when placed first and K1139 when placed after revealing the respondent’s perceptions on the environment. The estimated values indicate that there is both a willingness to pay for solid waste services and that there are at least two options that would be acceptable to the community; a pilot scale implementation would be required to validate the hypothetical values, especially given the dependency on problem framing. Community financing should be considered as a sustainable approach to solid waste management in underserved areas.


2021 ◽  
Vol 8 (4) ◽  
pp. 6-18
Author(s):  
S. E. Okosun ◽  
A. O. Omodehin ◽  
I. S. Ajayi

Management of wastes which is a part of the daily activities of man is an important aspect of environmental management. Over the years, there have been concerted efforts made towards adequately solving the problems created by improper waste management and disposal in Nigeria cities. This study, appraises environmental management in cities; a perspective from the Ondo state Waste Management Authority (OSWMA) Akure. The broad objectives of this study are to identify types of wastes managed by OSWMA, describe the attitude and role of residents (household) toward solid waste management, and examine the possible constraints faced by OSWMA, Akure in the discharge of their duties. Samples were drawn from the total number of OSWMA staff and clients served by the authority in the core, transition and peripheral districts of Akure. 53 questionnaires were administered to the staff representing 10% of the total number of staff while 324 questionnaires representing 1% of residents were administered, collated and analyzed using SPSS version 19. The results of the analysis, revealed that majority (81.1%) of the staff respondents opined that the type of waste managed by the Authority is solid waste; using the door to door method of solid waste collection as submitted by 54.5% of the staff. On the other hand, majority of the households’ respondents (81.4%) expressed willingness to pay for service rendered by the authority. Findings also revealed that poor funding was the main constraints faced by the authority. The study therefore recommends proper funding, provision of equipment and facilities needed for smooth running of the authority in order to ensure effective collection and management of waste in the study area.


2021 ◽  
Vol 62 (5) ◽  
Author(s):  
Phan Thi Thu Trang ◽  
Vo Van Hai ◽  
Le Thi Thanh Huong

There are 11 rooms and 38 departments with 1791 staffs in Thu Duc District Hospital. Moreover, there are above 6000 patients coming for examination and approximately over 900 in-patients at the hospital. Although the medical solid waste management was concentrated and focused on, there is still some insufficient points that need to be researched. Therefore, we are now proceeding in researchingour aim to describe the reality of medical solid waste management at Thu Duc District Hospital in 2019 and evaluate the factor that affects the waste management. The method for this research is cross-section descriptive research. We have observed all tools, equipments used for managing medical solid waste, and observed the medical solid waste classification in 36 departments/ clinical units, paraclinical, also have used designed inventory. The ratio of the department that meet thegoals in general of collecting, transporting, storage and waste disposal is not really high, only 75%, in which that the ratio for collecting by department only is lowest with 77.8%; next for collecting the waste by equipments with 80.6%; for waste classification by equipments is 83.3%.


Detritus ◽  
2020 ◽  
pp. 50-58
Author(s):  
Alhassan Sulemana ◽  
Emmanuel Amponsah Donkor ◽  
Eric Kwabena Forkuo ◽  
Juliet Asantewaa ◽  
Isabella N. A. Ankrah ◽  
...  

Solid waste collection constitutes 60-80% of the total solid waste management cost. Reduction of solid waste collection cost can be achieved through route optimization in a geographic information system (GIS) environment. The purpose of this study was to generate optimized routes for solid waste collection on Kwame Nkrumah University of Science and Technology campus in Kumasi, Ghana. The study modelled the existing routes for a complete collection cycle using travel time criteria and generated optimized routes for same using an ArcGIS software. Validation of the optimized outcome (travel distance and travel time) was done by subjecting the solid waste collection trucks to the optimized routes. The results from the study showed significant reduction in total travel time from 1,000.75 mins to 855.70 mins for existing and optimized routes respectively, translating into saving of 14.5%. Total travel distance significantly reduced from 367.30 km to 334.20 km for existing and optimized routes respectively, representing saving of 9.0%. Significant savings in travel time and travel distance have implications on reduction of fuel and maintenance cost of institutional solid waste collection trucks. The results indicate that the application of GIS-based route optimization in solid waste collection can provide significant improvement in reduction of operating cost.


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