ファイル | |
言語 |
日本語
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タイトルヨミ | ハイドロタルサイト カゴウブツ ヲ ハイゴウ シタ コンクリート ブロック ニヨル トシ カセン カラ ノ リン ジョキョ
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日本語以外のタイトル | Phosphorous Removal from Urban River Using Concrete Blocks Mixed with Hydrotalcite Compounds
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著者 |
野中 資博
山本 広基
島根大学生物資源科学部
相崎 守弘
福田 康伴
株式会社イズコン
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内容記述(抄録等) | Concrete blocks with phosphorous adsorption ability have been developed to remove non-point source phosphorous from rivers and canals. The concrete blocks were prepared by mixing cement with a hydrotalcite compound (HT) that has high selectivity and large phosphorous adsorption capacity. The concrete blocks (test pieces) with various the filling ratios of 85, 90 and 95% were prepared using fresh concrete, and the result of the slump test was 0 cm. Also, the compressive strength and phosphorous removal capacity were investigated fundamentally. The results showed that the compressive strength of all the test pieces was above 18N·mm-2 and they were sufficiently strong for use as laying blocks. For a test piece with a low filling ratio, phosphorous was removed by Ca2+ and for a test piece with a high filling ratio, phosphorous was not removed by ion exchange. However, these results suggest that high strength and high phosphorous adsorption ability are compatible with each other, which can be controlled by regulating the mix proportion. Furthermore, field tests were conducted using large concrete blocks containing HT (HT specimens). The results showed that phosphorous was adsorbed at the uppermost layer of the HT specimens. In the tests, the break-through of phosphorous adsorption occurred three months later and the average removal rate for such break-through was 3.69mg P·m-2·d-1.
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主題 | phosphorous removal
non-point source
concrete material
phosphorous resource
hydrotalcite compounds
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掲載誌名 |
水環境学会誌
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巻 | 27
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号 | 2
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開始ページ | 109
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終了ページ | 115
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ISSN | 1881-3690
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ISSN(Online) | 0916-8958
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発行日 | 2004-02-10
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DOI | |
出版者 | 日本水環境学会
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出版者ヨミ | ニホン スイカンキョウ ガッカイ
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出版者別表記 | Japan Society on Water Environment
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資料タイプ |
学術雑誌論文
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ファイル形式 |
PDF
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著者版/出版社版 |
出版社版
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部局 |
生物資源科学部
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