Effect of Nitrogen Load and Water Temperature on Nitrification Efficiency of Nitrification Tank Using Submerged Bed Process.
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- YOSHINO TSUNEO
- School of Hygienic Sciences, Kitasato University
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- IYO TOHRU
- School of Hygienic Sciences, Kitasato University
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- OHNO SHIGERU
- School of Hygienic Sciences, Kitasato University
Bibliographic Information
- Other Title
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- 固定床方式の硝化槽の硝化効率に及ぼす窒素負荷量および水温の影響〔英文〕
- コテイショウ ホウシキ ノ ショウカソウ ノ ショウカ コウリツ ニ オヨボス
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Abstract
Synthetic inorganic NH4-N wastewater with a load of 0.06, 0.12 and 0.24g/l·d were drculated through a nitrification tank equipped with a lace-like contact medium. At water temperatures of 20 and 30°C, high nitrification efficienaes (more than 90%) were obtained irrespective of the loading condition. At a water temperature of 10°C, a nitrification efficsency of approximately 80%was obtained under a low loading condition of 0.06 g-NH4-N/l⋅d. The maximum nitrifcation rates were 22.6mg-N/g-VSS·hr at a water temperature of 30°C, 11.0mg-N/g-VSS·hr at a water temperature of 20°C and 6.2mg-N/g-VSS·hr at a water temperature of 10°C.Temperature coeffiaents (θ) for nitrification were calculated to be 1.023-1.084.As the NH4-N loading rate was lowered, the influence of water temperature on nitrification effiaency was smaller. These results show that the nitrogen load should be limited to 0.06g/l⋅d or lower for nitrification treatment using the submerged bed process at a low water temperature.
Journal
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- Japanese Journal of Water Treatment Biology
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Japanese Journal of Water Treatment Biology 31 (1), 15-23, 1995
Japanese Society of Water Treatment Biology
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Keywords
Details 詳細情報について
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- CRID
- 1390001204961875072
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- NII Article ID
- 10002798128
- 130003700308
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- NII Book ID
- AN00351126
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- ISSN
- 18810438
- 09106758
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- NDL BIB ID
- 3635678
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed