Sustainable Approach for Landfill Management at Final Processing Site Cikundul in Sukabumi City, Indonesia

Abstract

Abstract:The main problem of landfill management in Indonesia is the difficulty in getting a location for Final Processing Sites (FPS) due to limited land and high land prices. Besides, about 95% of existing landfills are uncontrolled dumping sites, which could potentially lead to water, soil and air pollution. Based on data from the Ministry of Environment (2010) multi-year researches related to the rehabilitation of dumpsites toward sustainable landfill. The research methods are literature reviews, experiments, laboratory analysis and field observations. A pilot model of dumpsite rehabilitation was carried out in 2010 at the Final Processing Site at Cikundul in Sukabumi City, consisting of (1) mining landfill (2) construction of landfill cells in a former mining area with a semi aerobic landfill and an anaerobic landfill and (3) landfill operations using decomposed material from landfill mining as a soil cover. The purpose of the study is to develop a sustainable approach for landfill management and rehabilitation through landfill mining and implementation of semi aerobic landfill. Findings in the construction of landfill mining indicate that (1) the construction of landfill mining is constrained by leachate that is trapped in a pile of waste, therefore, the leachate needs to be pumped to leachate treatment installations, (2) the volume of waste excavation is expanding due to the high plastic content of about 26% in landfills (3) the potency of decomposed materials from landfill mining is 40-83% for landfill operations or greening.. The performance of landfill systems shows that leachate quality of semi aerobic landfill tends to be lower than that of anaerobic landfill. Gas composition at semi aerobic landfill in FPS Sukabumi shows about 6-10% CH 4 and about 15-16% O 2; for an aerobic landfill, the gas composition is about 47-57% CH 4 and about 2-3% O 2 . In conclusion the concept mining landfill could be developed especially for big cities where it is difficult to find a new site for landfill or to get soil cover for landfill operation. In a sustainable approach, the excavated area can be turned into a new area for landfill cell so that the capacity of existing Final Processing Site can be expanded using the block landfill concept. The landfill should be divided into three blocks: compost block, composting block and active block. Usage of the three blocks are rotated with the intention of using solid waste on the compost block as soil material for the active block through landfill mining.

Feasibility Study for Mining Waste Materials as Sustainable Compost Raw Material Toward Enhanced Landfill Mining

“…For example, in a study conducted at the Cikundul landfill in Sukabumi City, fine materials (soil cover and organic waste) utilized in the active zone and sold as landfill soil for construction accounted for 56.36% of the mining materials. In contrast, rough materials, such as plastic, glass, and metal, which are sold by scavengers, accounted for 37.68%, and other waste was stockpiled in the spoil heap [6]. A study conducted at the Blondo landfill in Semarang District using mining material for granule organic fertilizer revealed a NPV>0 value of IDR 12,079,813,538.…”

“…Few feasibility studies have been conducted on the utilization of organic materials from landfill mining, especially in Indonesia [6,7,9]. Several feasibility aspects, including environmental, technical, and financial matters, can be analyzed to determine whether landfill mining using organic materials is feasible as landfills in Indonesia contain a higher percentage of organic than inorganic material [6]. This organic material can be used as granular organic fertilizer (GOF), cover soil, and construction fill soil [6,7].…”

“…Several feasibility aspects, including environmental, technical, and financial matters, can be analyzed to determine whether landfill mining using organic materials is feasible as landfills in Indonesia contain a higher percentage of organic than inorganic material [6]. This organic material can be used as granular organic fertilizer (GOF), cover soil, and construction fill soil [6,7]. Notably, the feasibility assessment performed in this study was expected to overcome the problem of waste in the Jatibarang landfill, thereby reducing waste accumulation, extending the landfill's life, and increasing the economic value of waste [10].…”

A SWOT Analysis of Landfill Management System: Case Study of Talangagung Edu-tourism Landfill in Malang, East Java

“…s one of the developing countries, municipal waste management is still a problem that has not been resolved to date in Indonesia [1], [2], [3], [4]. The increase in the amount of waste generated continues to occur as a result of the increase in human population, daily needs and the economy sector development.…”