2017 Fiscal Year Final Research Report
Reduction of hardness and nitrate concentration of drinking water by biological treatment
| Project/Area Number |
15K00804
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Eating habits
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| Research Institution | Tokyo Kasei University (2016-2017)
Tokyo Kasei Junior College (2015) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
高橋 肇 東京海洋大学, 学術研究院, 准教授 (40413116)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 飲料水 / 硬度 / 硝酸態窒素 / 藻類 / 生物処理 |
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| Outline of Final Research Achievements |
We investigated whether algae spontaneously generated in aquarium or algae growing at a water treatment plant in Itoman City in Okinawa Prefecture can reduce hardness and can reduce nitrate nitrogen concentration in groundwater with high nitrate nitrogen concentration. Both algae could reduce the hardness. Hardness decreased at the time of light irradiation and did not decrease at dark place. The pH of water increased at the time of light irradiation and did not change at dark place. From this, it was found that the hardness decreased as the algae absorbed the CO2 of calcium bicarbonate dissolved in water when receiving photosynthesis. Nitrate nitrogen concentration also decreased as hardness. Each algae was Aphanochaete magnum, Cladophora albida.
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| Free Research Field |
食品学
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