Source separation in municipal solid waste management: Practical means to its success in Asian cities

2021 ◽  
pp. 0734242X2110496
Author(s):  
Premakumara Jagath Dickella Gamaralalage ◽  
Sadhan Kumar Ghosh ◽  
Kazunobu Onogawa

Source separation plays a pivotal role in sustainable and integrated Municipal Solid Waste Management (MSWM) and in achieving a circular economy in Asia. However, it is still not an official practice, and many cities continue to utilise open dumping, involving receiving mixed waste without pre-treatment. This paper, therefore, examines the advantages of source separation of MSW and explores the main factors for success in the planning and implementation of official source separation programmes in cities in Asia. Analysis of the results for two case studies in India and Japan could be used to strengthen capacities of policymakers in designing and implementing official source separation systems to facilitate material recovery and achieve sustainable development in Asia.

2014 ◽  
Vol 878 ◽  
pp. 23-29
Author(s):  
Jing Ying Ma ◽  
Jian Yi Zhan ◽  
Yue Jun Zhang

The management of municipal solid waste (MSW) in China is facing urgent problems with rapid industrialization and urbanization. This article focused on the status of Hangzhou, capital city of Zhejiang province, China. The regulations, policies, implementation, barriers and solutions about source separation, separate collection, clean & direct transportation, treatment and disposal were introduced. Source separation, separate collection and clean & direct transportation were seriously carried out from 2010. MSW was classified into four kinds, such as kitchen waste, hazardous waste, recyclable waste and other waste. Four kinds of wastes were collected, transported, treated and disposed, respectively. At the same time, a questionnaire survey was conducted in 2011 on 200 households in Xiasha and Gongshu Districts in Hangzhou. The results indicate that many citizens cannot effectively and correctly separated different kinds of solid wastes. Kitchen waste was directly disposed in landfill, because there is no composting plant in Hangzhou City. The collection of recoverable waste and hazardous waste was not in control of municipal solid waste management (MSWM) system. In order to optimize MSWM system in Hangzhou, the government and the citizen must make efforts in source separation, comprehensive treatment system, effective regulations and policies.


2021 ◽  
pp. 0734242X2110004 ◽  
Author(s):  
Shiza Aslam ◽  
Faizan Ali ◽  
Amna Naseer ◽  
Zeshan Sheikh

This article assesses the status of the solid waste management system (SWMS) in Karachi, the largest city of Pakistan, using the material flow analysis approach, a widely applied method in waste management (WM) studies. It involves a systematic assessment of the material flows of solid waste under the current WM system. A material flow diagram is developed to visualize the input and output waste flows. This study shows the quantification and identification of municipal solid waste (MSW) flow for the year 2019, from the point of generation to the end-use and disposal. Results show that the MSW generation increased from 10,435 to 15,600 metric tonnes per day (TPD) between 2017 to 2019. Approximately, 75% of the waste generated is collected: formally (50%); and informally (25%). The material recovery is low, accounting for only 26.28% of the total waste. There is no official material recovery and recycling facility. Therefore, material recovery solely depends on the informal sector. Results show that 70% of the daily waste ends up in landfills, which is 3120 TPD more than the formally collected waste. This estimated waste of 3120 TPD flows in either due to disposal activities of the backlogged waste or informally collected waste. Overall, Karachi’s SWMS performs poorly with a significant need for improvement. This study recommends adopting integrated WM approaches and inclusion of the informal sector to ensure the affordability and sustainability of the WM system.


2012 ◽  
Vol 11 (2) ◽  
pp. 359-369 ◽  
Author(s):  
Ioan Ianos ◽  
Daniela Zamfir ◽  
Valentina Stoica ◽  
Loreta Cercleux ◽  
Andrei Schvab ◽  
...  

2019 ◽  
Vol 18 (5) ◽  
pp. 1029-1038
Author(s):  
Antonio Lopez-Arquillos ◽  
Juan Carlos Rubio-Romero ◽  
Jesus Carrillo-Castrillo ◽  
Manuel Suarez-Cebador ◽  
Fuensanta Galindo Reyes

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