Basic Study on Development of Waste Cold Heat from LNG Tank and Freeze-Drying Technique for the Construction of Regional Zero-Emission System of Organic Solid Wastes.

概要

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The feasibility study for the construction of regional zero-emission system of organic solid wastes such as waste food was carried out noticing the usefulness of waste cold heat of -160°C from LNG tank to the production of feed by freeze-drying technique. As the results, the daily energy of waste cold heat from the LNG tank located m a research area was estimated to be 4.8×10<SUP>6</SUP> cal/day, and the ability for freeze-drying treatment by the waste cold heat was concluded to be 7.3 ton/day in a case of using waste food of which water content was 72%. Emissions of waste food from ten shopping center and one provision center of school lunch in the research area were 1.9 ton/day and 0.4 ton/day, respectively. Therefore, the potential of the waste cold heat was seemed to be sufficient for the conversion the waste food to feed material by freeze-drying treatment. The dry products from waste food of 2.3 ton was calculated to be 0.52 ton. It suggests that feed of 5.2 ton per day was produced by mixture of the ratio of 10 % to other feed material.
社団法人環境科学会の論文