Survey of the Use of the System for Separate Collection of Household Waste from Packaging in the Municipality of Stara Zagora

2021 ◽  
Vol 6 ◽  
pp. 23-35
Author(s):  
Viktoriya Getzova ◽  
Ralitza Berberova

Separate waste collection and recycling are at the basis of today’s wastemanagement. This helps the reduction of landfilled waste, which aims to reduce soil, water, and airpollution, on the one hand, and to cut down on the depletion of resources for new production, on theother. A large portion of household waste comes from the so-called “widespread waste”, whichincludes packaging waste. Legislation at European and national levels sets specific goals toovercome this problem. Separate waste collection is carried out by municipalities via wasterecycling companies, which set up and operate systems for separate collection. Citizens are at theheart of the efficient functioning of these systems. A separate waste collection system of this kindhas been established in the municipality of Stara Zagora in Bulgaria. The objective of this paper isto present the results of a questionnaire survey of the system’s users to establish their awareness andattitudes regarding the process of separate waste collection. The results can be used to improve thesystem.

2017 ◽  
Vol 65 (02) ◽  
pp. 443-455
Author(s):  
NORIMICHI MATSUEDA ◽  
JUN’ICHI MIKI

We first report three empirical findings from our survey on the contracting-out of municipal waste collection services in Japan: (1) the rate of contracting-out and the contract price are inversely related, (2) this inverse relationship tapers out as the contracting rate becomes sufficiently high, and the contract price even tends to go up as the contracting rate approaches 100% and (3) there is a significant disparity in the contracting rates between the eastern and western parts of Japan. In order to account for these observations, we then set up a simple analytical model and examine its implications. Also, we discuss the issues that a potential hold-up situation could give rise to when the services are completely contracted out to private firms.


2017 ◽  
Vol 12 (1) ◽  
pp. 53-60 ◽  
Author(s):  
Rim Sallem ◽  
Mohamed Rouis

This paper presents a method for optimizing the household waste collection system supported by Geographical Information System (GIS) tool for the sector 1of district El Bousten of Sfax commune, Tunisia. The ArcGIS Network Analyst based model is applied for the purpose of improving the collection process effectiveness, namely, the household collection bins’ reallocation along with the vehicles’ tour optimization procedure in terms of distance and time. Results indicated a reduction of 25, 83% in route and 21, 5 % in the time spent of collection along with fuel consumption savings. These findings show that GIS based model tends to exhibit significant improvements as to the collection and transportation system, therefore, to its economical and environmental costs.


Author(s):  
Monica Vilms ◽  
Oliver Kalda

Nowadays the usage of source separation waste collection system is essential for all organisations. This paper describes a case of introduction of such a system at a university of applied sciences (UAS) in Tallinn. The project started in September 2015. The main goals of the project were to reduce the number of garbage cans in the UAS, reduce the amount of unsorted household waste and inform the school community about the significance of waste sorting and relevant environmental matters. The first step of the project was to execute a full waste audit in UAS to identify precise waste quantities which occurred on daily basis. During the week the environmental technology students weighed and sorted all the waste in all premises of the UAS. Based on the collected data, the new system comprised of 19 waste collection points with sorting instructions and adequate volume. The total number of garbage cans was reduced by 46% and mixed household garbage cans by 72%. The final step was to analyse the efficiency of the new waste collection arrangements. Results showed that the new system was well accepted and 80–85% of waste was sorted and collected in the new waste collection points.


Author(s):  
Pablo A. Miranda ◽  
Carola A. Blazquez ◽  
Rodrigo Vergara ◽  
Sebastian Weitzler

Vestnik MGSU ◽  
2021 ◽  
pp. 838-858
Author(s):  
Olga N. D’yachkova

Introduction. The problem of solid household waste management, analyzed in the context of sustainable development, is relevant both in Russia and worldwide. On the one hand, it deals with vast legitimate and illegitimate landfills, polluting the environment. On the other hand, it deals with the depletion of natural resources and the potential usability of latent reserves of recyclable waste. It is inefficient to accumulate mixed waste and build recycling capacities, since they are accompanied by atmospheric pollutions. Separate collection of waste has a great potential. According to the estimates, Russia’s waste management system will move to a new level when local waste management companies come into operation. This new level will ensure environmental protection and higher standards of living. However, the intersectoral problem of separate waste collection cannot be solved by local waste management operators. This problem deals with urban development patterns and urban economies of the RF subjects, as well as the Russian industries, that use recyclable materials. Materials and methods. The co-authors have applied the system analysis of the research literature, statistical data and regulatory documents, as well as process modeling. Results. The co-authors have analyzed the engineering model of separate waste collection, implemented by residents of multi-family homes within the framework of the “nature – economic activities – nature” pattern. The accumulation of hazardous and oversized waste is organized as the separate subsystems of the waste management system implemented by the residents of a multi-family home. Conclusions. The co-authors propose to modify the system of household waste management to prevent the over-accumulation of substantial amounts of mixed household waste in waste containers near residential houses and in waste collection rooms. The introduction of ecologically friendly innovations is needed at each stage of the life cycle of any product.


2017 ◽  
Vol 124 ◽  
pp. 1-12 ◽  
Author(s):  
Eren Yıldız-Geyhan ◽  
Gökçen Alev Altun-Çiftçioğlu ◽  
Mehmet Arif Neşet Kadırgan

2021 ◽  
Vol 17 (39) ◽  
pp. 77
Author(s):  
Oumar Bah ◽  
Boubacar Sanogo ◽  
Mohamed Traore

Cet article est une étude expérimentale pour de connaitre la caractérisation et la quantification des déchets solides ménagers du quartier de Faladié dans la commune VI du District de Bamako. A Faladié, comme dans la plupart des communes de Bamako avec comme problématiques environnementales majeures, une insalubrité alarmante, qui accentue en partie les maladies comme : le paludisme, la fièvre typhoïde, le choléra, les infections respiratoires, les anémies, .... C’est dans ce contexte que la présente étude, voulant résorber l’épineuse problématique qu’est la gestion des ordures ménagères, a été coordonnée pour connaitre « la caractérisation des déchets ménagers au niveau des dépôts intermédiaires et finaux d’une part ; et de contribuer à la mise en place d’un système de tri adapté à Faladié d’autre part ». L’approche méthodologique d’échantillonnage utilisée pour déterminer la taille d’échantillon de déchets à trier est définie par la production journalière d’ordures ménagères d’un échantillon de la population totale par catégorie en satisfaisant à un niveau de confiance de 95 %. Ainsi, le tri manuel a porté sur le contenu de deux (2) bennes de 7m³, un total de 14m³ d’ordures ménagères, soit 7382,7 kg. Dans ces conditions, l’étude a permis de dégager la caractérisation des ordures ménagères et de différencier les types de déchets valorisables de Faladié. En outre, nous avons déterminé qu’il est généré chaque jour 0,27 kg par habitant (soit 0,27 kg/habitant/jour). A la suite de l’étude, des propositions stratégiques ont été formulées à la Mairie de la Commune VI dans le sens de mettre en place un comité de gestion intégrée des déchets. This article is an experimental study for the characterization and quantification of solid household waste in the Faladie neighborhood in the commune VI of the District of Bamako. In Faladie, as in most of the communes of Bamako with major environmental problems, an alarming insalubrity, which accentuates in part diseases such as: malaria, typhoid fever, cholera, respiratory infections, anaemia, It is in this context that the present study, aiming to solve the thorny problem of household waste management, was coordinated to find out « the characterization of household waste at the level of intermediate and final depots on the one hand; and to contribute to the setting up of an adapted sorting system in Faladie on the other hand». The methodological sampling approach used to determine the sample size of waste to be sorted is defined by the daily production of household waste of a sample of the total population by category at a 95% confidence level. Thus, the manual sorting involved the contents of two (2) 7m³ skips, a total of 14m³ of household waste, or 7382.7 kilograms. Under these conditions, the study allowed us to characterize the household waste and to differentiate between the types of recoverable waste in Faladie. In addition, we also determined that 0.27 kilogram per inhabitant is generated every day (i.e. 0.27 kilogram/inhabitant/day). Following the study, strategic proposals were formulated to the Commune VI Town Hall to set up an integrated waste management committee.


2018 ◽  
Vol 22 (3) ◽  
pp. 822-832 ◽  
Author(s):  
J Pinto ◽  
J Escudero ◽  
E Solórzano ◽  
MA Rodriguez-Perez

A comprehensive study about a new production route of structural polymer foams is presented. This methodology is based on the one hand on a free foaming process induced by a chemical blowing agent inside a closed mold, and on the other hand on the use of a solid polymer able to absorb gas in close contact with the molten foamed polymer, establishing a competitive absorption of the blowing gas between both materials. This competitive absorption of the gas promotes the formation of a solid skin in all the areas in contact with the solid polymer. This phenomenon has been identified in-situ and evaluated in real time using a specific X-ray radioscopy set-up, being possible to relate unequivocally the apparition and thickness of the solid skin with the presence of the solid polymer and with the pressure achieved in the closed mould during the foaming process. The presented production route shows an accurate and independent control of the final foam relative density (even below 0.5) and the thickness of the solid skin, together with an excellent surface quality and a broad applicability, which allows the design and production of structural polymer foams with exceptional features.


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