Studies on the Electrolytic Conditions for the Electrochemical Elution of Iron as Applied to Phosphorus Removal Technology.
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- MORIIZUMI Masaki
- Product Development Center, Home Appliances Company, Sanyo Electric Co., Ltd.
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- FUKUMOTO Akihiro
- Motor Applied Products Division, Home Appliances Company, Sanyo Electric Co., Ltd.
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- FUJIMOTO Keiichi
- Product Development Center, Home Appliances Company, Sanyo Electric Co., Ltd.
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- YAMAMOTO Yasuji
- Osaka Prefectural Institute of Public Health
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- OKUMURA Sayoko
- Osaka Prefectural Institute of Public Health
Bibliographic Information
- Other Title
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- リン除去技術における鉄電解法の最適電解条件の検討
- リン ジョキョ ギジュツ ニ オケル テツ デンカイホウ ノ サイテキ デンカイ ジョウケン ノ ケントウ
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Abstract
Phosphorus removal from small-scale domestic wastewater treatment systems by means of an electrolytic bath using of iron electrodes was examined.<br>We discovered, however, that an iron oxide layer forms on the surface of the iron electrodes, leading to a decreased phosphorus removal ratio.<br>To solve this problem, we discovered that specific electrolytic conditions can inhibit the formation of this iron oxide layer (FeOOH, Fe3O4) on the iron electrodes. One condition is the Fe:P ratio. An Fe/P ratio exceeding 1.5 inhibits the formation of this iron oxide layer. Another condition is the concentration of nitrate ions and nitrite ions. We have shown that the iron oxide layer forms when the nitrate nitrogen concentration is 60mg · l-1 or the nitrite nitrogen concentration is 10mg · l-1. However, a polarity reversal period of 24 hours inhibits the formation of the iron oxide layer when the nitrate nitrogen concentration is 60mg · l-1 and the iron oxide produced by nitrate ions and nitrite ions is broken down by the chloride ion at a concentration exceeding 60mg · l-1.
Journal
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- Journal of Japan Society on Water Environment
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Journal of Japan Society on Water Environment 23 (5), 279-284, 2000
Japan Society on Water Environment
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Details 詳細情報について
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- CRID
- 1390001205080995328
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- NII Article ID
- 10007660949
- 30022650596
- 10008006316
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- NII Book ID
- AN10372439
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- COI
- 1:CAS:528:DC%2BD3cXmtl2gtbs%3D
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- ISSN
- 18813690
- 09168958
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- NDL BIB ID
- 5375333
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed