洗浄系への雨水利用の試み

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We have been studying the storage of rainwater for use in various ways, such as flushing the lavatory, fire prevention and emergency drinking water. From ancient times, rainwater has been used as water for living, for example, as water to wash with on solitaly islands. However, there are few reports of basic research into the use of rainwater for cleaning systems. From the viewpoint of effective utilization of water for living and purification of water, this study measured the detergency of rainwater by cleaning model experiments. The data were compared with that of groundwater and showed that rainwater had good properties as a washing solvent. The results obtained were as follows : 1. With the addition of an interfacial active agent (LAS and soap), the detergency of rainwater increased much more than that of groundwater. 2. Solid particles showed much more difficulty in adhereing to some fibers such as cotton, rayon, nylon and polyester in the rainwater than in the groundwater. A good dispersion capacity of solid particles was observed in the rainwater, and this increased with the addition of interfacial active agents. This good pollution control effect was estimated to be caused the good dispersion capacity of solid particles in the rainwater. 3. Rainwater has been properties for use as a washing solvent than groundwater. This is thought to result from differences in the water quality between rainwater and groundwater.
福岡女子大学の論文
2001-01-31

洗浄系への雨水利用の試み

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