Groundwater Vulnerability towards Pollution in Area Around the Piyungan Landfill, Bantul Regency, D. I. Yogyakarta

The Piyungan landfill is located in Bantul Regency, Daerah Istimewa Yogyakarta, still uses an open dumping system. The open dumping system produced more quantity of leachate from other systems. Leachate spreads to the ground and seeps into the ground to the groundwater surface. These conditions have an impact on the environment. This study aims to assess the groundwater vulnerability to leachate contamination in the area around the Piyungan landfill. The research method used is survey and mapping, and data analysis is carried out using the Le Grand method. Geographic Information System (GIS) is also used to visualize data into maps. The Le Grand method considers as many as 5 physical environmental parameters, including the groundwater depth, absorption above ground, aquifer permeability, groundwater slope, and horizontal distance of wells with pollutant sources. Next, scoring is carried out for each of these parameters, and then a groundwater vulnerability map is made using the overlay method. The results of the study were three classes of the potential vulnerability of groundwater pollutions. That were large pollution potential (may or may be polluted), medium pollution potential (maybe polluted but slightly), and small pollution potential (very difficult to pollute).

Analytical Hierarchy Process Tool in Google Earth Engine platform : A case study of a tropical landfill site suitability

Kolkata being a metropolitan city in India, has its main Municipal Solid Waste dumpsite situated at Dhapa just adjacent to the East Kolkata Wetlands Ramsar site. The current prevalent situation at Dhapa is open dumping leading to various contaminations and hazards putting forth the need to look for alternative sites where the landfiilling operation can be shifted to using scientific methods. A User Interface (UI) based Analytical hierarchy process (AHP) tool has been developed within the Google Earth Engine (GEE) cloud platform to find out the alternative dumping sites using geospatial layers. AHP function is not available as a native algorithm or developed by any researcher in GEE. The tool has three major functionalities, of which the first one handles the UI elements. The AHP procedure is within another function, and the last function integrates the AHP coefficients to the layers generating the final suitability layer. Users can also upload comparison matrix as GEE asset in the form CSV file which gets automatically integrated into the AHP to calculate the coefficients and consistency ratio to generate the spatial suitability layers. This approach showcases a generalized AHP function within the GEE environment, which has been done for the first time. The tool is designed in the cloud platform which is dynamic, robust and suitable for use in various AHP-based suitability analysis in environmental monitoring and assessment.

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

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.

STRATEGI PENGELOLAAN TEMPAT PEMBUANGAN AKHIR (TPA) SAMPAH DI KOTA PEKANBARU Strategy for Management of Waste Disposal Sites (TPA) in Mandau District.

The existence of landfill as final waste management was used by some people to live near a landfill and acquire a livelihood. This kind of situation could influence health and social condition, also environment as the impact from landfill. The aim of this research to analyze the condition of existing landfill in Mandau Sub-district, the negative and positive impact and the modeling of landfill based on community. The research was quantitative and qualitative used survey method with interview, questionnaires and observational directly. The sampling technique was purposive sampling and the participants of this study were consist of 30 scavengers and 20 families who lived are limited to 300 meter from landfill and they were interviewed accidentally by researcher. This research also involved the governments in supporting data collection. The data were analyzed and presented in the form of descriptions. The result obtained the current landfills condition were not feasible if it still used the open dumping method with a service period of up to 9 years 2 months. The negative impact caused by landfill activity also affected to scavengers ' health. The positive impact was the emergence of a job which could produce income for family economic. Landfill modelling which could be applied was 3R + 1P concept according to Ministerial Regulation (Trash Bank and Integrated Waste Management), this concept was socialized to community..

FEASIBILITY STUDY OF JALUPANG WASTE DISPOSAL SITE OF SUBANG REGENCY

The increasing number of residents in Subang Regency every year has a direct impact on the amount of waste generation that must be managed. Until now, Subang Regency only has the Panembong Waste Disposal Site (WDS) in Parung Village which is intended to serve the entire Subang Regency area which includes 30 sub-districts. The Panembong TPA has started operating Since 1991, with the current Open Dumping operational system, the Panembong TPA has experienced an overload on an active land area of ​​± 2.2 Ha. The total area of ​​the Panembong TPA is ± 6.5 Ha which is used ± 1.6 Ha for general landfill infrastructure, the Active Zone of ± 2.2 Ha is used as a landfill area and the Passive Zone ± 2.7 With such conditions, the Subang Regency government proposes and plans to transfer and move the location of the Final Waste Disposal Site (TPA) at the planned location, while the planning location for this TPA is at: Jalupang Village, Kalijati District. The new TPA is planned to use the Sanitary Landfill system, considering that the Open Dumping system is no longer allowed by the government since 2009 which is based on Law No. 18 of 2008 concerning Waste Management. The initial step in the construction of the Sanitary Landfill TPA system is determining the location of the TPA which must comply with the requirements and provisions regarding environmental management, public order, city/environment cleanliness, regional regulations on waste management and urban spatial planning, as well as other implementing regulations that have been determined. by the government. To be able to determine the location of the landfill that meets these requirements.

Potential of Energy Municipal Solid Waste (MSW) to Become Refuse Derived Fuel (RDF) in Bali Province, Indonesia

The generation of municipal solid waste (MSW) in Bali has various environmental impacts. One of the updates on sustainable waste processing is the RDF treatment plant processing. Before carrying out the processing, MSW characterization is needed because each region has a diverse composition. The processing of MSW into RDF provides benefits for achieving MSW reduction targets, renewable energy use, and the reduction of greenhouse gas (GHG) emissions. For this reason, this study was conducted to determine the potential of MSW in Bali as an alternative to renewable fuel and its potential to reduce GHG. MSW's potential calorific value as a raw material for RDF in Bali can reach 9.58 - 17.71 MJ/kg. The implementation of processing waste into RDF in pellets has shown a calorific value of ± 3904 - 4945 kkcal/kg. Implementing MSW processing into RDF in Bali can reduce GHG by 178 - 330 times compared to open dumping.

SOLID WASTE DISPOSAL IN EAST MAMPRUSI MUNICIPALITY: ASSESSMENT OF REASONS FOR DISPOSAL METHODS

Purpose: The study determined the methods of solid waste disposal in the municipality, in relation with awareness and compliance with dumping on approved locations. Methodology: The study adopted simple and purposive sampling techniques to select households and respondents. The target respondents for the study were, planning and Environmental offices, chiefs and opinion leaders, and heads of households. Data were analyzed using a regression model to determine the influencing factors of the disposal options, whiles also evaluating compliance with the disposal on approved lands. Findings: The research found out that; open dumping in the neighborhood, (83.33%), was the main disposal option of the municipality, also, there was a significant relationship between; awareness of approved dumping sites and compliance with dumping on approved sites, distance to the waste disposal sites affected the disposal on approved sites, and lack of knowledge on by-laws on waste management also affected the choice of disposal option. The research concluded that open dumping of waste is mainly driven by low awareness of approved disposal sites and the absence of recycling alternatives. The unique contribution to theory, practice and policy: The study recommended the need for the provision of more communal containers and waste bins by government and sector players on waste management in the district; intensive education on bye-laws, emphasizing on the significance of dumping waste on approved sites is a welcoming intervention.

Artikel Review: Penggunaan Kitosan Dan Biji Asam Sebagai Biokoagulan Alami Dalam Perbaikan Kualitas Air Sumur Di Sekitar Tpa Sampah Antang

Lokasi TPA Antang yang berada di sekitar perumahan penduduk, dalam pengoperasiannya melakukan cara open dumping. Sistem ini tidak memperhatikan sanitasi lingkungan, sampah hanya di tumpuk dan dibiarkan membusuk. Sampah hanya ditimbun dan dibiarkan terbuka dengan tanah, di mana sistem pengolahan lindi (leachate) yang tidak maximal dapat mempengaruhi kualitas air tanah dangkal di sekitarnya. Penelitian ini bertujuan mengetahui efektifitas kitosan dari Cangkang Bekicot dan Biji Asam Jawa dapat menurunkan konsentrasi logam berat tembaga (Cu) pada air sumur di sekitar TPA sampah Antang Makassar. Tahap pembuatan kitosan meliputi deproteinasi, demineralisasi serta deasetilasi. Proses preparasi biji asam meliputi pembersihan biji dari bauh, di hancurkan menggunakan mortal setelah itu di ayak. Penelitian ini menggunakan variasi volume kitosan 10.000 ppm dan volume biji asam yaitu 5 mL, 10 mL, 15 mL, 20 mL dan 25 mL kitosan dan biji asam yang ditambahan kedalam air sumur 500 mL. Kadar Cu pada air sumur sebelum dan sesudah penambahan kitosan dan biji asam diukur menggunakan Atomic Absorption Spectrophotometric (AAS). Penjernihan air sumur di sekitar TPA sampah Antang menggunakan kitosan dan biji asam pada penelitian ini diselesaikan melalui studi literatur dengan menggunakan metode koagulasi dan bahan aku kitosan dan biji asam. Dari beberapa hasil studi literatur yang telah dilakukan, maka dapat disimpulkan bahwa proses koagulasi menggunakan kitosan dari cangkang bekicot dan biji asam dapat digunakan untuk memperbaiki kualitas air