MATERIAL FLOW ANALYSIS AS A BASIS FOR DETERMINING RIVER PLASTIC WASTE MANAGEMENT STRATEGIES By

• Main Author: Ulhusna, Nida
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/43397
• Institution: Institut Teknologi Bandung

Bali Province with a population of 4,246,500 people in 2017 and as the largest coastal tourist destination in Indonesia would certainly produces high levels of waste generation, and if not managed properly will have an impact on the pollution of the aquatic environment. In accordance with Presidential Regulation No. 83 of 2018 and No. 97 of 2017, targeted at 2025 there will be a waste reduction of 30%. A good knowledge about the identification of sources of river plastic waste is needed to determine alternative river plastic waste management policies in Bali Province. Gained an average of waste streams is 9.46 kg/hour, which reached the peak of 43.25 kg/hour at 11.00-12.00 WITA. The dominant waste is organic waste (40.75%WW) and plastic waste contributed 12.17%WW. From the results of the questionnaire, the people who dispose of waste are people who are living 0 - 500 meters from the river, so that the per capita waste generation that dumps into the river is 0.0076 kg/person/day with a density of 0.097 tons/m3. So that obtained in 2019, the river waste reaches 30.41 tons/day or equivalent to 3.99%WW of the untreated waste or 1.37%WW of the total generated of Bali Province, with a plastic contribution of 3.70 tons/day. From 12.17%WW plastic waste, it was obtained the potential of plastic waste recycling reached 58.21%WW with the largest contribution from LDPE waste which reached 45.50%WW with a potential for recycling of 59% BB. In addition, there are multilayer plastic waste which reaches 16.25%WW with a potential for recycling of 62%WW. From the BCR analysis, it was found that the best alternative scenario is scenario 3 with efforts to recycle plastic waste, handling inorganic waste with economic value, and compost production so that it can achieve the target of 30% reduction by 2025 with efforts to reduce waste generation at source and collection and transportation services.