MITIGATION OF HYDROGEN SULFIDE CONCENTRATION IN SEWER PIPE BY USING CONDUCTIVE CONCRETE
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- FUKUSHIMA Masato
- 山口大学大学院 創成科学研究科 建設環境系専攻
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- TAKEUCHI Ayumi
- 山口大学大学院 創成科学研究科 建設環境系専攻
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- SUZUKI Tasuma
- 山口大学大学院 創成科学研究科 建設環境系専攻, 山口大学ブルーエナジーセンター
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- IMAI Tsuyoshi
- 山口大学大学院 創成科学研究科 建設環境系専攻
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- SAKUMA Hiraku
- 中川ヒューム管工業株式会社 技術営業部
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- HITOMI Takashi
- 中川ヒューム管工業株式会社 技術営業部
Bibliographic Information
- Other Title
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- 導電性コンクリートを用いた下水管内における硫化水素の抑制技術の開発
- ドウデンセイ コンクリート オ モチイタ ゲスイカン ナイ ニ オケル リュウカ スイソ ノ ヨクセイ ギジュツ ノ カイハツ
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Abstract
<p> The objective of this study was to develop a new technology to mitigate the concentration of hydrogen sulfide in sewer pipe by using conductive concrete. Experimental results showed that the concentration of hydrogen sulfide significantly decreased by using conductive concrete, and the effectiveness lasted during 66 days experiment. Also found was that elemental sulfur was observed after 66 days experiment in sludge for conductive concrete, whereas this tread was not observed for ordinary Portland cement. These results demonstrated that conductive concrete provides an electron pathway from deposited sludge in the bottom of sewer pipe to oxygen dissolved in surface water and as a result, the electron generated from hydrogen sulfide oxidation in anaerobic environment was accepted by oxygen via conductive concrete. Finally, regarding the mechanism responsible for hydrogen sulfide oxidation, chemical oxidation was the dominant process and biological process did not play a siginificant role.</p>
Journal
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- Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
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Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 75 (7), III_1-III_10, 2019
Japan Society of Civil Engineers
