| Summary: | 碩士 === 國立成功大學 === 環境工程學系 === 107 === SUMMARY
In Taiwan, Taiwan Sugar company has multi-business including sugar refinery, livestock, agriculture and, biotechnology, etc., There are opportunities to develop by-product Industrial symbiosis among the business. This study is to change the current state of the Taiwan Sugar Company by recycling and recycling the by-products of the business. Materials, energy, water and resources that are no longer needed in one process can be used as a raw material in another process, to improve the efficiency of resource use to enhance environmental and economic benefits. The environmental and economic benefits of the new resource chain model will be assessed, using eco-efficiency and Cost-Benefit Analysis, respectively. The eco-efficiency calculations show the new circular of the sugar industry and the livestock industry, the ratio between total product volume and waste volume increased by 24.8% and 61.5%, respectively; the ratio between total revenue and waste volume increased by 23.3% and 79.5%, respectively. The cost-benefit analysis of the manufacture of by-products into new products shows that the sugar industry by-product soot is made into the red brick of the construction industry with a profit of 5,302,330 NTD; the sugar industry ash replaces the cement component in the concrete hollow brick, and the profit is as high as 291,700,005 NTD. The sugar industry by-product bagasse was used for pulping and papermaking, and the profit was 19,411,770NTD. The sugar industry by-product molasses extracted ethylene oxide as a natural surfactant, with a profit of 35,301,000 NTD.
INTRODUCTION
Every industry and process needs to rely on resources. Most of the resources in Taiwan also need imported raw materials to meet. According to the Living Planet Report (2018) of the World Wildlife Fund (WWF), as time goes on, human activities consume 1.5 Earth resources a year if they don’t change the linear model used in today's industries; In 2030, two Earth resources are needed. Because, the global consumption of resources is gradually increasing, so it is necessary to improve resource efficiency and industry sustainability by changing the way raw materials are obtained, product production processes, and waste disposal to reducing the use of raw materials and reducing to rely on imported raw materials. In order to achieve the goal, the industries uses the by-products and wastes produced by the manufacturing process, the materials, energy, water and other resources that are no longer needed in one process can be used by another process as raw material. Let resources be recycled and reused to achieve maximize the utility and value in the circular system. However, in the successful case of industrial symbiosis, the Kalundborg symbiosis park reduced CO2 emissions by 635,000 tons; the British sugar industry produced less than 200 grams of waste per ton of sugar; and the profit of Nanning Sugar increased by 60 million. We will use the successful industrial symbiosis model cases to bring to Taiwanese companies.
MATERIALS AND METHODS
However, in Taiwan, Taiwan Sugar company has multi-business including sugar refinery, livestock, agriculture and, biotechnology, etc., There are opportunities to develop by-product Industrial symbiosis among the business. In this study, the purpose is to find potential circulation paths through the exchange of resources between the Taiwan Sugar business or with outside industries to improve the circular benefits of resources and enhance environmental and economic benefits. First, through the material flow check, to determine the flow direction and quantity of resources, water, energy and material inputs and outputs of Taiwan Sugar Company's various businesses. In combination with design a resource cycle potential table that covers with the composition of the resource and the method of reuse. And through the literature to collect new reuse technologies and cases, to identify opportunities for resource link between the businesses to achieve higher economic value.
RESULTS AND DISCUSSION
The environmental and economic benefits of the new resource chain model will be assessed, using Eco-efficiency and Cost-Benefit Analysis, respectively. By converting by-products into raw material, the eco-efficiency calculations show the new circular of the sugar industry and the livestock industry, the ratio between total product volume and waste volume increased by 24.8% and 61.5%, respectively; the ratio between total revenue and waste volume increased by 23.3% and 79.5%, respectively. The Cost-Benefit Analysis of the manufacture of by-products into new products shows that the sugar industry by-product soot is made into the red brick of the construction industry with a profit of 5,302,330 NTD; the sugar industry ash replaces the cement component in the concrete hollow brick, and the profit is as high as 291,700,005 NTD. The sugar industry by-product bagasse was used for pulping and papermaking, and the profit was 19,411,770NTD. The sugar industry by-product molasses extracted ethylene oxide as a natural surfactant, with a profit of 35,301,000 NTD.
CONCLUSION
Through the study of Taiwan Sugar Company, we will identify new circular trends in the by-products of businesses to enhance value. However, using circular benefits to evaluate these potential new products, the results show that the new reuse approach benefits are increased. In the future, if they are implemented in enterprises or cooperate with outside companies, they can have higher benefits for the company.
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