Potential Utilization of Municipal Solid Waste of Gwalior City, India

This paper aims at determining the recent composition of municipal solid waste of Gwalior city and provide sa notion to take action and proposed economical & viable waste management technologies and techniques for effective utilization of waste. In this study, MSW samples were collected from the Kedarpur landfill site situated at Shivpuri link road and were analyzed for physical composition. The study reveals that Gwalior city produces a high quantity of biodegradable waste (58.03%) with high moisture content (68.60%) and plastic waste (15.96%). Waste composition and characterization disclosed that vigorous segregation is required before dispatching the waste for different treatment processes or landfilling. Based on this study, we may conclude that the combined mechanism of planning and implementation of waste-to-energy (WTE) technologies and treatment such as Anaerobic Digestion/ Bio-methanation, Material recovery facility (MRF), and Bio-remediation/Bio-mining for old existing waste and new generating waste is needed for upgrading the waste management scenario of the city. Keywords: Municipal solid waste (MSW), Kedarpur Landfill site, Composition & Characteristics, Waste to Energy, Anaerobic Digestion, Bio-Mining, Recycling & Materials Recovery Facility (MRF)

Generation, characterization, and environmental implications of solid waste and its management in the Everest region

Managing solid waste is becoming a rather challenging task in remote areas, including the Mt. Everest region in Nepal, due to its cold climate, complex topography, and extreme environmental factors. Using published and unpublished literature and personal communications to key informants, this paper analyzes the situation of solid waste management in the Everest region as it relates to increasing tourism and possible environmental implications in the region. The study revealed that combined efforts from people of all levels associated with the mountain region would create a circular waste management system. The paper also reports the existing practices and planned activities for the essential process such as source segregation of waste, collection, use of material recovery facility, and recycling which could lead to sustainable solid waste management in the Everest region and beyond with similar context.

Optimization of Waste Management at the Purwosari Material Recovery Facility (MRF) Mijen District, Semarang City

Semarang City is working on constructing a Material Recovery Facility (MRF) in various urban villages to reduce the waste that enters the Jatibarang Landfill. However, the construction of MRF is not optimal. MRF Purwosari still functions as a container without waste processing. By projecting waste generation for the next ten years, the results of optimization planning are processing waste into RDF, redesigning MRF covering an area of 1,571 m2 with an investment cost of IDR 1,602,837,997 and an operational cost of IDR 307,741/ton/day. The NPV value was Rp.4,836,965, EIRR 12%, and BCR value of 1.81.

Micro- Level Audit of Segregation, Collection, Transportation, Treatment and Disposal of Municipal Solid Waste at Source of Dhantoli, Nagpur

: A micro-level audit of the Municipal Solid Waste Management system was carried out for centrally situated Dhantoli locality of Nagpur, Maharashtra. Dhantoli being a very elite locality of Nagpur was facing problems due to increasing municipal solid waste. Waste quantification was carried out to find the total amount of waste generated per day from the locality and the percentage of biodegradable and non-biodegradable waste was also determined. The waste sample was analyzed for its characteristics and its results indicated that organic waste was highest among other components of the waste. The outcomes of the audit also highlighted the lacunae in the collection and transportation system of the locality. Considering all the parameters, a decentralized composting plant was suggested for the treatment and disposal of biodegradable waste; while for the non-biodegradable waste establishment of a Material Recovery Facility (MRF) center was proposed.

Optimal Sequence Planning for Robotic Sorting of Recyclables From Source-Segregated Municipal Solid Waste

Sorting of recyclables from source-segregated municipal solid waste (MSW) stream is an essential step in the recycling chain in a material recovery facility (MRF) for waste management. Manual sorting of recyclables in an MRF is a highly hazardous operation for human health as well as time-consuming. Application of robotics for automated waste sorting can alleviate these problems to a large extent. The total sorting time depends upon the pick-and-place (PAP) sequence used in a robotic sorting system. In this context, the generation of optimal PAP sequence plan is a key challenge considering that it cannot be solved by an exhaustive search due to the combinatorial explosion of the search space. This paper reports an approach for generating optimal PAP sequence plan for robotic sorting of recyclables from source-segregated MSW stream in a system equipped with thermal-imaging technique. The PAP sequence generation is formulated as an optimization problem wherein the objective is to minimize the total sorting time. The formulated problem has been solved using a genetic algorithm (GA)-based approach. Numerical simulations as well as physical experiments using a 6 degrees-of-freedom (DOF) articulated manipulator have been performed to test and validate the developed optimal sequence generation algorithm. Results revealed an improvement of up to 4.28% speedup in total sorting time over that of randomly generated sequences. It is envisaged that the developed approach can substantially improve the sorting performance in an MRF.

GAMBARAN TEMPAT PENGOLAHAN SAMPAH TERPADU DI KABUPATEN BADUNG DAN KOTA DENPASAR TAHUN 2019

ABSTRAK Sampah yang tidak dikelola dengan baik dapat mengakibatkan dampak yang buruk bagi lingkungan. Tempat Pengolahan Sampah Terpadu (TPST) merupakan salah satu cara dalam mengelola sampah. Tercatat terdapat 27 TPST yang ada di Kabupaten Badung dan Kota Denpasar. Hasil monitoring dan evaluasi terhadap pengelolaan TPS 3R tahun anggaran 2012 oleh Direktorat PLP Cipta Karya menunjukkan keberfungsian TPS 3R masih rendah. Tujuan dari penelitian ini adalah untuk mengetahui gambaran umum TPST yang ada di Kabupaten Badung dan Kota Denpasar. Penelitian ini merupakan penelitian deskriptif menggunakan metode cross-sectional. Objek penelitian ini adalah 24 TPST di Kabupaten Badung dan Kota Denpasar. Data dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa dari 24 TPST yang diteliti, 21 TPST beroperasi dengan aktif dan 3 TPST tidak beroperasi. Lembaga pengelola TPST juga bervariasi dimana mayoritas dikelola oleh kelompok swadyaya masyarakat. Kegiatan pengolahan sampah yang dilakukan di TPST bervariasi yaitu pengangkutan sampah, pengolahan sampah organik, anorganik, serta pengolahan sampah organik dan anorganik. Permasalahan yang dialami oleh TPST adalah kondisi sampah yang masih tercampur dan tingginya residu yang dihasilkan, Penting bagi TPST untuk bekerjasama dengan pihak terkait untuk meningkatkan performa TPST. Kata Kunci : Sampah, tempat pengolahan sampah terpadu ABSTRACT Solid waste that is not managed properly can have negative impact on the environment. Material recovery facility (MRF) is one way to manage waste. There were 27 MRF in Badung Regency and Denpasar City recorded. The results of monitoring and evaluation of MRF in 2012 by Direktorat PLP Cipta Karya show that the functioning of the MRF is still low. The purpose of this study was to determine the general description of MRF in Badung Regency and Denpasar City. The data were analyzed descriptively. This research is a descriptive study using cross-sectional method. The object of this research is 24 MRFs in Badung Regency and Denpasar City. The results showed that of the 24 MRFs studied, 21 MRFs operated actively and 3 MRFs did not operate. The MRF management institution also varies where the majority is managed by community. The waste processing activities carried out in MRF vary, namely waste transportation, processing of organic, inorganic waste, and processing of organic and inorganic waste. The problems that experienced by MRF were the condition of the waste that was still mixed, and the high residue produced. It is important for MRF to work with relevant parties to improve the performance of MRF. Keywords : Solid waste, material recovery facility