博士 / 國立臺灣大學 / 漁業科學研究所 / 107 / Currently the utilization of deep ocean water (DOW or deep sea water/DSW) is receiving much attention due to its high added value with large quantity, high productivity and potential for recycling energy. Deep ocean water possesses three main characteristics: low temperature, cleanliness and nutrient richness. In eastern Taiwan, the steep coastal landforms make it a great potential to develop deep ocean water industry. In order to promote DOW related industry, Yilan County government in eastern Taiwan has established DOW Park in Nan''ao Township.
Taking Danan’ao Deep Ocean Water Park as an example, this research has collected the utilization methods, draft, and the prices of deep ocean water of America’s NELHA and Japan, and had a preliminary calculation of benefit assessment for deep ocean water utilization in the Park. In addition, it has also briefly introduced the utilization conditions of deep ocean water extraction pipes of the United States, Japan, and Taiwan. Related contents have been summarized as below: (1) the pipe diameter of America’s deep ocean water extraction pipe is designed to be larger, whose costs are lower. The deep ocean water charges are 0.074 US dollars per 1,000 gallons (About 0.66 NT dollars per ton). (2) Japan’s deep ocean water exploitation scale is smaller. Due to the heavy weathers, the pipe diameter is mainly designed to be small caliber. In order to improve pipe safety, steel wires have been specially designed to cover the HDPE pipe to strengthen the intensity of the pipelines. Deep ocean raw water charges are 300-540 Yen per ton, in which Okinawa Prefecture Deep Ocean Water Research Institute charges 400 Yen per ton (about 138 NT dollars per ton) for raw material processing, but charges only 6 Yen per ton (about 2 NT dollars per ton) for agriculture and aquaculture. (3) The benefit assessment of deep ocean water utilization on aquaculture industry has been analyzed as Plan A and Plan B. Plan A has designed 0.9 hectare of the land for segmented utilization of aquaculture, the fish production area is 0.55 hectares, estimating the annual output value to be 66.5 million dollars, the benefit before tax to be 27.6 million dollars, and daily water consumption to be 7,200 tons. Plan B has designed 5.5 hectares of the land for segmented utilization of aquaculture, the fish production area is 2.4 hectares, estimating the annual output value to be 411 million dollars, the benefit before tax to be 185 million dollars, and daily water consumption to be 46,000 tons. The maximum water charges for making profits of Plan A and B are 10.5 dollars/ton and 11.0 dollars/ton respectively. If referring to the cost of water prices of America’s NELHA or the water price standards Japan provides for agriculture and fishery industry, abundant profits could be expected if utilizing deep ocean water on aquaculture industry, which is worth government’s vigorous promotion.
Through commercializing the DOW resources and introducing non-governmental investment from the private sectors, the DOW Park aims to promote regional development and upgrade the related industries. In the present study, we investigated the potential market demands, technical conditions and its biological natures of developing salmon aquaculture at Nan''ao DOW Park. It aims to take advantage of the characteristics of DOW to propose industrial strategies on salmon aquaculture with DOW and establish the developmental goals at different times. Ingeneral, three stages i.e. short, medium and long-term stages will be analyzed respectively. In the short-term stage, the objective of harvested salmon is to achieve 30,000 mt yr-1 for the domestic market demands in the common size of 1 kg-5 kg fish-1. In the medium and long-term stages, the objectives are focusing on the markets in Japan, China and Southeast Asian countries, aiming to achieve the salmon harvest with 300,000 mt-500,000 mt year-1. The domestic market of the DOW salmon industry is estimated to reach approximately US$ 330 million (NT$ 10 billion) of linking industrial cluster and value chain. The study may also provide the government an innovative strategy and market orientation towards DOW industry guidance as well an investment consideration for enterprises having an interest in developing DOW related industry.
| Identifer | oai:union.ndltd.org:TW/107NTU05451001 |
| Date | January 2019 |
| Creators | Wang-Ching Chen, 陳旺卿 |
| Contributors | Hong-Nong Chou, 周宏農 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 182 |
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