Optimal Process Network for Integrated Solid Waste Management in Davao City, Philippines

Abstract

Municipal solid waste management (MSWM) systems in developing countries adopt practices from developed countries to reduce their environmental burdens. However, several complex issues specific to developing countries hinder the full implementation of these practices. The future of MSWM in Davao City, Philippines, is envisaged as a notable example of the combination of new infrastructure and local MSWM practices. A linear programming model was developed, following material flow analysis and life cycle assessment, to design an optimal system for Davao City. The performance of the system was evaluated in terms of greenhouse gas emissions, energy and revenue generated, and the amount of landfill waste. The results show that the proposed system positively affects the environment compared to the current system, due to additional treatment options. However, the main allocation concern transitions from organic waste in the current system to plastic waste in future scenarios. Furthermore, the mitigation of greenhouse gas emissions and the extension of landfill life will be heavily influenced by trade-offs between sorting operations and the management of incinerated wastes with high calorific values. Therefore, plastic-waste-specific treatment options will be critical for future MSWM systems. The results herein underscore the need for sustainable MSWM in the study area, considering the region-specific conditions.

Managing the low carbon transition pathways through solid waste electricity

“…In an extensive study covering 367 countries, the World Bank conducted an in-depth analysis of waste generation and its management around the world 55 . Table 1 outlines the total volume of solid waste generated in each region in 2016 and how it was categorized [56][57][58] . Approximately 2 billion tons of solid waste was produced in that year, and projections suggest this figure could surge to 3.40 billion tons by 2050 due to increasing population and urbanization trends 59 .…”

“…The income level of a region significantly influences waste collection and disposal methods. For instance, in countries with lower income levels, where proper landfill sites are not available, open spaces and streets often become default dumping grounds, with over Solid waste classification and capacity around the world in 2016[56][57][58] .…”

Perencanaan Infrastruktur Pengelolaan Sampah di Kampus Universitas Muhammadiyah Surakarta

“…Peraturan Menteri Pekerjaan Umum Nomor 03/PRT/M/2013 mengatur Pengelolaan sampah terpadu terdiri atas kegiatan pengumpulan, pemisahan, pengolahan, dan pendaurulangan sampah, sehingga sampah menjadi produk bernilai ekonomis. Sistem dan infrastruktur pengelolaan sampah perlu diadaptasi sesuai dengan kondisi sosial ekonomi daerah sekitar (Olalo, Nakatani, & Fujita, 2022). Wardi (2011) meneliti tentang pola pengelolaan sampah berbasis sosial-budaya di Bali.…”

Municipal Solid Waste Collection and Haulage Modeling Design for Lahore, Pakistan: Transition toward Sustainability and Circular Economy

“…Still, local municipalities' technical and administrative capacity issues hinder them from performing an active role as "clients", which impedes the desired results [18]. Low-income countries can improve the SWM system by adopting the experience in waste collection and treatment technologies from developed nations [19] by applying modification based on local conditions.…”