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PhD topic Gladys Setyamukti

M.Sc. Gladys Setyamukti
Organic Waste Processing as Community-Based Solid Waste Management Approach
M.Sc. Gladys Setyamukti
Solid waste is a major problem in Indonesia, many disasters happened involving solid waste. For example, in 2005 in Leuwi Gajah-Cimahi, the final dumping site in the city of Bandung, a land slide covered a residential area causing 143 dead and hundreds injured. After that, the final dumping site was closed. However, the alternative dumping site at that moment was not able to receive all the solid waste from Bandung resulting in solid waste everywhere on the streets for weeks. Waste management in Indonesia touches upon institutions, law and law enforcement, financing schemes, operation and public participation. The operation consists of collecting, transportation, treatment and final dumping. While collection is organized by the community, the municipality is usually responsible for the transportation. Some problems that can be identified are: 1. coverage for solid waste transport services by the municipality is still low, 2. municipal solid waste contains domestic waste mixed with non-domestic waste, such as waste from industry, offices, health services, stores and traditional markets, 3. law enforcement is low, the government is very permissive, 4. the concept of 3R (Reduce, Reuse, Recycle) is not being applied in waste management although there is some un-organized recycling. This study aims at improving the solid waste management by developing strategies for decentralized organic waste collection and processing and enhancing the benefits for the local community. The study is based on a case study area in the Citarum river basin (Java, Indonesia). This study will identify the most effective processes for dealing with the organics fraction in domestic solid waste under tropical conditions at community level. The hypotheses of the study are:
  1. Organic waste can be separated and kept separate from the rest of the waste during the entire waste processing line.
  2. Clean organic waste can be turned into a healthy product (compost) for soil improvement purposes.
  3. Separate management of organic waste in developing countries reduces the waste flow ending up at the landfill by at least 50%.
Fundamental research will be carried out on the optimal conditions for the processing of organic waste into high quality products at low emission levels, and on defining conditions for land application on tropical soils of resulting products. Moreover, the study will focus on the social dimension of dealing with organic waste at the community level and how to implement in the practice fundamental research results under a multi-stakeholder perspective. In order to achieve the goals of the research five steps will be carried out:
  1. Inventory of the ways in which cities, communities and households deal with organic waste in Indonesia and carrying out a SWOT analysis of each
  2. Emission measurements of small scale organic waste processing facilities in order to assess the environmental impact from the actual practices and identification of optimization potentials
  3. Measurements of effects of land application of the product from these processing facilities in order to describe soil-compost interaction and the impact on the nutrient and carbon stocks in the soil
  4. Comparative evaluations of small scale organic waste processing facilities in terms of environmental, financial and social burden and benefits
  5. Implementation workshops with local communities of small demonstration projects in order to develop a road map for improved management of organic waste under consideration of involved stakeholders.
The outcome of the study will assist local actors to set up schemes to produce high quality products under optimum process conditions and to develop a management plan for organic waste processing and product application in Indonesia. This research is part of a methodological approach assisting the implementation of 3R strategies in developing countries.

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