JWARP  Vol.12 No.2 , February 2020
Study on Reduction of Mixed Water Salinity by Sound Wave
—Toward Water Scarcity Issue-Solving in Isolated Islands in the World
Abstract: There are so many Isolated Islands (inhabited islands) in the world, including Japan. However, at present islanders, there have been faced with the decline of industries, serious concerns of rapid aging and very low birthrate without children and water scarcity issues etc. It can be said that these situations are under the environment which shows a microcosm of Japanese and/or world survival society in the near future. In this paper, the experimental data on the reduction of the mixed water (seawater & rainwater) salinity by the sound wave when changing the volume ratio were first shown, taking into the characteristics of the Isolated Islands. Next, the main analysis result on the water qualities of mixed water with which sound wave was irradiated was shown and the consideration mainly based on the WHO drinking water quality standards was carried out. Finally, through a simple water quality improvement apparatus using small hydroelectric power, a consideration regarding a possibility of the purification of the water (to be a drinking water) based on the solar circulation energy (regenerative type’s natural energy) such as small hydropower utilization, natural sunlight utilization, natural gravity utilization, natural oscillation utilization has been described in the paper.
Cite this paper: Hiratsuka, A. and Imamura, A. (2020) Study on Reduction of Mixed Water Salinity by Sound Wave
—Toward Water Scarcity Issue-Solving in Isolated Islands in the World. Journal of Water Resource and Protection, 12, 155-170. doi: 10.4236/jwarp.2020.122010.

[1]   Hiratsuka, A., Imamura, A., et al. (2018) The Relationship between Sound and Rainwater Quality Purification Using Waterwheel Rotation. 13th International Symposium on Advanced Science and Technology in Experimental Mechanics, Kaohsiung, 30 October-2 November 2018, Full_Papers, F08023-Akira HIRATSUKA.pdf.

[2]   Hiratsuka, A., et al. (2019) Study on Sustainable Rainwater Resource Utilization—Towards Deepening of Homo Environments. Journal of Water Resources and Protection, 11, 491-528.

[3] (In Japanese)

[4]   Tanbo, N. (2019) Asu no Sekai [Tsugi no Jidai: Kou KindaiBunmei] ha Donna Mononinarudarou ka? (How Will Tomorrow World [Next Era: Post moderncivilization] Be?) Column, Nakiusagi, No.5 (April), 1-5, Kaihatsu Koho. (In Japanese)

[5]   Kimura, M. (2003) Mineral of the Sea—Seawater as Human Amniotic Fluid. Ocean Newsletter, No. 66, the Ocean Policy Research Institute, the Sasakawa Peace Foundation. (In Japanese)

[6]   Nakagawa, Y. and Takada, J. (2012) Japan Has Died Out at Zero Nuclear Power “Non-Science” National Crime of Fukushima Cesium Evacuation. Okura Shuppan. (In Japanese)

[7]   Ikegami, A. (2014) Declaration of “Zero Nuclear Power” of Former Prime Minister Koizumi Read by Akira Ikegami. Komichi Shobou. (In Japanese)

[8]   Koizumi, J. (2018) Zero Nuclear Power, One Can Do It If One Try. OhtaShuppan. (In Japanese)

[9]   Nakamura, N., et al. (2017) Accelerated Crystallization of Colloidal Glass by Mechanical Oscillation. Scientific Reports, 7, Article No. 1369.

[10] (In Japanese)

[11]   Saito, N., et al. (2005) Isolation of Vibrio vulnificus from Sea Water and Commercial Shellfish in Miyagi Prefecture. (In Japanese)

[12]   Honda, T., et al. (1999) The Survey for Water Pollution of Bisphenol A in Nagasaki Prefecture. Annual Report of Nagasaki Prefectural Institute of Public Health and Environmental Sciences, 45, 8-11. (In Japanese)

[13]   National Institute of Advanced Industrial Science and Technology (2005) Shousai Risk Hyoukasho Bisphenol A Ver. 0.8. (In Japanese)

[14]   Wada, O. (1994) 8. Functional Nutrients as Trace Elements. In: Suzuki, T. and Wada, O., Eds., Nutrition of Mineral and Trace Elements, Daiichi Shuppan, Tokyo, 102. (In Japanese)

[15]   Tanaka, K. Do You Refrain from Taking the Salt Too Much? Bad Effect of Low Salt Viewed from Preventive Medicine. (In Japanese)

[16]   Japan Water Research Center (2018) Study on International Comparison of Water Supply. (In Japanese)

[17]   Inoue, D., et al. (2010) Evaluation of Biodegradation Potential of Bisphenol A and Bisphenol F in Seawater. Journal of Japan Biological Society of Water and Waste, 46, 137-144. (In Japanese)

[18]   Ministry of Health, Labour and Welfare (2006) Q & A on Vibrio vulnificus. (In Japanese)

[19]   Suzuki, T., et al. (2013) Disinfection Using Zero-Valent Iron, Lemon Juice, and Sunlight Bacteria. Journal of Resources Processing, 60, 138-144. (In Japanese)

[20]   Takada, H. (2019) Reduce Single-Use Plastics. JEAS News, No. 162, Spring, 6-12. (In Japanese)

[21]   Plamondon, C. and Sinha, J. (2019) Life without Plastic—The Practical Step-by-Step Guide to Avoiding Plastic to Keep Your Family and the Planet Healthy (2017), Translated to Japanese by Y. Hattori. NHK Shuppan, 286-294. (In Japanese)

[22]   Tyl, R.W., et al. (2002) Three-Generation Reproductive Toxicity Study of Dietary Bisphenol A in CD Sprague-Dawley Rats. Toxicological Sciences, 68, 121-146.


[24]   Hiro, N., et al. (2002) High-Speed Removal of Nitrate from Aqueous Solutions by the Electrolytic Method. Electro-Chemistry, 70, 111-116. (In Japanese)

[25]   Hiratsuka, A. (1996) Bunrisui no Suiryou-Suishitsuni Chumokushita Gesui Odei Koekibunri Sisutemu no Bunsekihyouka (Analysis and Evaluation of the Solid-Liquid Separation System of Sewage Sludge Focused on the Water Quantity and Water Quality of the Separated Water). Doctoral Dissertation, Osaka University, Osaka, 3-4. (In Japanese)