scholarly journals Recyclables Collection Route Balancing Problem with Heterogeneous Fleet

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7406
Author(s):  
Roger Książek ◽  
Katarzyna Gdowska ◽  
Antoni Korcyl
Keyword(s):  
Solid Waste ◽  
Solid Waste Management ◽  
Municipal Solid Waste Management ◽  
The European Union ◽  
Waste Collection ◽  
Solid Waste Collection ◽  
Crew Rostering ◽  
Heterogeneous Fleet ◽  
The Impact ◽  
Conventional Fuel

Nowadays, robust and efficient solid waste collection is crucial to motivate citizens to participate in the circular economy by sorting recyclable solid waste. Vocational vehicles, including garbage trucks, contribute significantly to CO2 emissions; therefore, it is strongly recommended, and in the European Union it is mandatory, to replace conventional-fuel-based garbage trucks with electric ones. For providing sustainable and energy-efficient solid waste collection with a heterogeneous fleet, in-depth mathematical computations are needed to support solving complex decision-making problems, including crew rostering and vehicle routing, because the distance and capacity of electric garbage trucks differ from conventional-fuel-based ones. However, the literature on solid waste collection using electric garbage trucks is still relatively scarce. The main contribution of this paper is developing an optimization problem for balancing travel distance assigned to each garbage truck of a heterogeneous fleet. The problem is based on specific requirements of the Municipal Solid Waste Management in Cracow, Poland, where the working time of routes is balanced and the total time of collection service can be minimized. For the problem, an MIP program was developed to generate optimal crew schedules, so that the hitherto network of segregated solid waste pickup nodes can be served using a heterogeneous fleet in which the share of electric garbage trucks is up to 30%. We study the impact of the changed composition of the fleet on modifications in crew rostering due to the shorter range of an electric vehicle compared to a conventional-fuel-based one.

scholarly journals Willingness to Pay for Improved Household Solid Waste Collection in Blantyre, Malawi

Economies ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 54 ◽  
Author(s):  
Hanke Ndau ◽  
Elizabeth Tilley
Keyword(s):  
Waste Management ◽  
Willingness To Pay ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Pilot Scale ◽  
Environmental Perceptions ◽  
Waste Collection ◽  
Solid Waste Collection ◽  
The Impact ◽  
Minute Walk

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.

scholarly journals Route optimization for solid waste collection: Trabzon (Turkey) case study

2013 ◽  
Vol 9 (1) ◽  
pp. 6-11
Keyword(s):  
Solid Waste ◽  
Solid Waste Management ◽  
Path Model ◽  
Route Optimization ◽  
Optimization Process ◽  
Municipal Solid Waste Management ◽  
Waste Collection ◽  
Solid Waste Collection ◽  
Waste Production ◽  
The City

In a municipal solid waste management system, decreasing collection/hauling costs, which consist of 85 % of total disposal expenditure, can be carried out by a route optimization. Thus, a huge amount of economical benefits is getting furnished. If route optimization is performed in solid waste collection/hauling process, due to reductions in “empty miles” negativity, total expenditures will be decreased. Trabzon City located in the northeast side of Turkey has about 185 thousand inhabitants according to Census 2000. The city shares just about 1% of the Gross Domestic Income in Turkey. In other words, that means that Trabzon City livings have moderate revenue. The objectives of this study are to optimize for the route of collection/hauling in Trabzon City by taking consideration of data about road net, demographics and solid waste production. In order to analyse the solid waste collection/hauling process in the city, the processes were recorded by a Sony DCR-TRV145E brand video camera. To use route optimization process, data related in present spending, truck type and capacity, solid waste production, number of inhabitants and Global Positioning System (GPS) receiver data for each route were collected and all the data were analyzed with each other. For 39 districts in the city, a shortest path model was used in order to optimize solid waste collection/hauling processes, as minimum cost was aimed. The Route View ProTM software as an optimization tool was used for that purpose. Geographic Information System (GIS) elements such as numerical pathways, demographic distribution, container distribution and solid waste production amount were integrated to the software. To give an idea, thematic container layer has 777 container location points for the entire city. After performing routes by the software, the optimized routes were compared with the present routes. Success by the optimization process was around 4-59 % for distance and 14-65 % for time. Consequently, a route optimization process on the street stationary container collection system will contribute a benefit by 24 % in total cost.

scholarly journals Improving Municipal Solid Waste Collection Services in Developing Countries: A Case of Bharatpur Metropolitan City, Nepal

2019 ◽  
Vol 11 (11) ◽  
pp. 3010 ◽  
Author(s):  
Rajesh Kumar Rai ◽  
Mani Nepal ◽  
Madan Singh Khadayat ◽  
Bishal Bhardwaj
Keyword(s):  
Developing Countries ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Municipal Waste ◽  
Municipal Solid Waste Management ◽  
Waste Collection ◽  
Solid Waste Collection ◽  
Household Level ◽  
Metropolitan City

Municipal solid waste management is one of the major challenges that cities in developing countries are facing. Although waste collection services are critical to build a smart city, the focus of both scholarship and action/activism has been more on the utilization of waste than on collection. We devised a choice experiment to elicit the preferences of municipal residents with regard to the various attributes of solid waste collection services in the Bharatpur Metropolitan City of Nepal. The study showed that households identify waste collection frequency, timing of door-to-door waste collection services, and cleanliness of the streets as the critical elements of municipal waste collection that affect their welfare and willingness to pay. While almost all households (95%) were participating in the waste collection service in the study area, more than half (53%) expressed dissatisfaction with the existing service. Women were the main actors engaged in waste collection and disposal at household level. The results of the choice analysis suggest that households prefer a designated waste collection time with waste collection bins placed at regular intervals on the streets for use by pedestrians who often throw garbage on the streets in the absence of bins. For these improvements, households were willing to pay an additional service fee of 10–28% on top of what they were already paying. The study also finds that municipal waste collection can be improved through the involvement of Tole Lane Committees in designing the timing and frequency of the service and by introducing a system of progressive tariffs based on the number of storeys per house.

Environmental Management in cities: A Perspective from the Akure Solid Waste Management Authority, Ondo State, Nigeria.

2021 ◽  
Vol 8 (4) ◽  
pp. 6-18
Author(s):  
S. E. Okosun ◽  
A. O. Omodehin ◽  
I. S. Ajayi
Keyword(s):  
Environmental Management ◽  
Waste Management ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Waste Collection ◽  
Solid Waste Collection ◽  
The Core ◽  
Ondo State ◽  
Collection And Management

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.

THE REALITY OF MEDICAL SOLID WASTE COLLECTION, TRANSPORTATION, STORAGE AND DISPOSAL AT THU DUC DISTRICT HOSPITAL, HO CHI MINH CITY IN 2019

2021 ◽  
Vol 62 (5) ◽  
Author(s):  
Phan Thi Thu Trang ◽  
Vo Van Hai ◽  
Le Thi Thanh Huong
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Cross Section ◽  
Solid Waste Management ◽  
District Hospital ◽  
Ho Chi Minh City ◽  
Waste Collection ◽  
Solid Waste Collection ◽  
Descriptive Research ◽  
Waste Classification

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%.

Life cycle assessment of potential municipal solid waste management strategies for Mumbai, India

2016 ◽  
Vol 35 (1) ◽  
pp. 79-91 ◽  
Author(s):  
Bhupendra K Sharma ◽  
Munish K Chandel
Keyword(s):  
Global Warming ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Municipal Solid Waste Management ◽  
Human Toxicity ◽  
The Impact

Dumping of municipal solid waste into uncontrolled dumpsites is the most common method of waste disposal in most cities of India. These dumpsites are posing a serious challenge to environmental quality and sustainable development. Mumbai, which generates over 9000 t of municipal solid waste daily, also disposes of most of its waste in open dumps. It is important to analyse the impact of municipal solid waste disposal today and what would be the impact under integrated waste management schemes. In this study, life cycle assessment methodology was used to determine the impact of municipal solid waste management under different scenarios. Six different scenarios were developed as alternatives to the current practice of open dumping and partially bioreactor landfilling. The scenarios include landfill with biogas collection, incineration and different combinations of recycling, landfill, composting, anaerobic digestion and incineration. Global warming, acidification, eutrophication and human toxicity were assessed as environmental impact categories. The sensitivity analysis shows that if the recycling rate is increased from 10% to 90%, the environmental impacts as compared with present scenario would reduce from 998.43 kg CO2 eq t−1 of municipal solid waste, 0.124 kg SO2 eq t−1, 0.46 kg PO4−3 eq t−1, 0.44 kg 1,4-DB eq t−1 to 892.34 kg CO2 eq t−1, 0.121 kg SO2 eq t−1, 0.36 kg PO4−3 eq t−1, 0.40 kg 1,4-DB eq t−1, respectively. An integrated municipal solid waste management approach with a mix of recycling, composting, anaerobic digestion and landfill had the lowest overall environmental impact. The technologies, such as incineration, would reduce the global warming emission because of the highest avoided emissions, however, human toxicity would increase.

Surviving from garbage: the role of informal waste-pickers in a dynamic model of solid-waste management in developing countries

2006 ◽  
Vol 11 (3) ◽  
pp. 371-391 ◽  
Author(s):  
ROCÍO DEL PILAR MORENO-SÁNCHEZ ◽  
JORGE HIGINIO MALDONADO
Keyword(s):  
Developing Countries ◽  
Waste Management ◽  
Solid Waste ◽  
Dynamic Model ◽  
Solid Waste Management ◽  
Waste Collection ◽  
Management Policies ◽  
The Impact ◽  
Waste Pickers

In developing countries, informal waste-pickers (known as scavengers) play an important role in solid waste management systems, acting in a parallel way to formal waste collection and disposal agents. Scavengers collect, from the streets, dumpsites, or landfills, re-usable and recyclable material that can be reincorporated into the economy's production process. Despite the benefits that they generate to society, waste-pickers are ignored when waste management policies are formulated. The purpose of this paper is to integrate the role of scavengers in a dynamic model of production, consumption, and recovery, and to show that, in an economy producing solid waste, efficiency can be reached using a set of specific and complementary policies: a tax on virgin materials use, a tax on consumption and disposal, and a subsidy to the recovery of material. A numerical simulation is performed to evaluate the impact of these policies on landfill lifetime and natural resource stocks. A discussion on the implementation of these instruments is also included.

scholarly journals Determinants of municipal solid waste management in Portugal

2016 ◽  
Vol 4 (2) ◽  
pp. 3
Author(s):  
Ana Luísa Mota Freitas ◽  
Francisco Vitorino Martins ◽  
Elizabeth Real de Oliveira
Keyword(s):  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Sociodemographic Factors ◽  
Municipal Solid Waste Management ◽  
Waste Collection ◽  
Behavioural Factors ◽  
Selective Collection ◽  
Collection Programs

Municipal solid waste management has been a topic of interest of several authors over time, in particular the implementation and maintenance of waste collection programmes. Initially, pioneering studies focused on the economic aspects of the provided services. However, many authors later argued the costs of providing solid waste collection services should also be influenced by socio-economic and behavioural factors, exogenous to the municipalities. The present study will be developed in this context, looking, more broadly, to explain the factors influencing the decision-making of the Portuguese municipalities in implementing and maintaining programs of selective collection of solid waste, considering the economic, financial, technological and sociodemographic factors. The results show that, indeed as presented by several authors before, economic factors aren’t the only determinants that influence municipal costs concerning these services, as demographic, geographic and technological factors must be taken into account. Moreover, the enforced legislation also impacts the municipal costs due to municipalities being obliged to contribute to the success of these collection programs in order to fulfil the waste recovery targets. This implies that the costs of these services and the inherent infrastructures are usually financed by its citizens in the form of utilization taxes and also the state.

scholarly journals Municipal solid waste management in some countries of the world

2020 ◽  
Vol 217 ◽  
pp. 04010
Author(s):  
Olga Guman ◽  
Olga Krinochkina ◽  
Victor Khomenko ◽  
Ekaterina Wegner-Kozlova
Keyword(s):  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Middle Urals ◽  
Municipal Solid Waste Management ◽  
Main Research ◽  
Mineral Compositions ◽  
Municipal Solid Waste Landfills ◽  
The Impact

The aim of the study is both an analysis of existing basic solutions and innovations in the field of municipal solid waste management and new developments by domestic authors. The main research method was environmental monitoring in the impact zone of municipal solid waste (MSW) landfills. In the process of monitoring, the properties of the soils of the landfill bases were studied by testing them and further laboratory studies of lithological and mineral compositions, moisture and density, filtration and other characteristics. As a result, the following were established: the dependence of soil water permeability on particle size distribution, lithological, organ mineral compositions and the degree of their heterogeneity; maximum minimum-required thickness of screening soils at the base of MSW landfills in the Middle Urals. The established dependences of the engineering and geological characteristics of soils make it possible to use them as natural impervious screens, which can be successfully applied in other regions under similar conditions. Among the constructive solutions in the field of municipal solid waste management, the developments of domestic scientists, which were tested in the Moscow, Nizhny Novgorod and Sverdlovsk regions, are considered. Some of them relate to environmental protection in the area affected by landfills, while others are aimed at optimizing the operation of such landfills. The optimization technology consists in combining the operation and reconstruction cycles of municipal solid waste landfills within their land allotment. It allows involving previously unused materials into circulation and obtaining insulating material from “old-year” waste.

scholarly journals OPTIMIZED ROUTING OF TRUCKS FOR INSTITUTIONAL SOLID WASTE COLLECTION IN KUMASI, GHANA

Detritus ◽  
2020 ◽  
pp. 50-58
Author(s):  
Alhassan Sulemana ◽  
Emmanuel Amponsah Donkor ◽  
Eric Kwabena Forkuo ◽  
Juliet Asantewaa ◽  
Isabella N. A. Ankrah ◽  
...  
Keyword(s):  
Solid Waste ◽  
Travel Time ◽  
Solid Waste Management ◽  
Operating Cost ◽  
Travel Distance ◽  
Route Optimization ◽  
Maintenance Cost ◽  
Waste Collection ◽  
Complete Collection ◽  
Solid Waste Collection

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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