J. Technology and Education, Vol.13, No.1, pp.9-14, 2006
研究論文
再資源化に向けての生ゴミからの塩分除去処理に関する基礎研究
坂下 裕一、吉村 忠与志*
福井工業高等専門学校 物質工学科(〒916-8507 鯖江市下司町16-1)
Salinity removal treatment from household waste for resource recycling
Yuichi SAKASHITA , Tadayosi YOSHIMURA*
Fukui National College of Technology
(Geshi-cho, Sabae, Fukui 916-8507, Japan)
(Received April 20, 2006; Accepted May 25, 2006)
The waste discarded from ordinary homes is incinerated using heavy oil at high temperatures. However, despite the depletion of fossil fuel resources and concomitant atmospheric pollution associated with the combustion thereof, we continue to incinerate garbage using heavy oil. Given the deleterious impact that this has on the global environment, the incineration of household waste should be stopped. Instead, we should consider ways in which garbage could be used as a resource and recycled. However, the salinity content of household waste is another potential environmental problem, particularly when the household waste composted during drying, and a method for ameliorating this high salinity therefore needs to be developed.
We developed a method for removing the salinity from household waste in water. In order to prevent the generation of unpleasant or offensive odors during treatment, it is important that the household waste not be permitted to decay. We therefore used titanium dioxide supported in silica gel a photocatalyst to prevent the anaerobic/aerobic digestion of household waste. By using the photocatalyst in combination with a decomposition tank, we were able to develop a method for removing the salinity from the household waste.
Keywords: Salinity removal treatment, Resource recycling of household waste, Photocatalyst, Preventing the anaerobic/aerobic digestion of the household waste
