Options for sustainable industrial waste management toward zero landfill waste in a high-density polyethylene (HDPE) factory in Thailand

The feasibility of the 3R concept tends to increase the reduction, reuse, and recycling of industrial waste. In this study, we investigated the feasibility of 3R methods to cope with industrial waste generated from high-density polyethylene production in Thailand. The sources and types of waste and existing waste management practices were identified. The four sources of waste generation that we identified were: (1) production, (2) packaging, (3) wastewater treatment, and (4) maintenance, distributed as 47, 46, 4, and 3 %, respectively. The main options for management were: sales to recycling plants (60.41 %), reuse and recycling (25.93 %), and industrial-waste landfilling (10.47 %). After 3R options were introduced, the proposed alternatives were found to be capable of reducing the amount of waste by 33.88 %. The results of life-cycle assessment (LCA) were useful for considering the environmental impact where 3R options were adopted. We also found that net greenhouse gas (GHG) emissions and other environmental impacts could be reduced when industrial waste diverted from landfill is used as alternative fuel. However, the cost of waste disposal seems to be the greatest obstacle for the adoption of 3R methods in Thailand.

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