Treatment Efficiencies of Nitrite Nitrogen in Industrial Wastewater by Using Amido Sulfonic Acid.
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- INOUE Mitsuru
- Kanagawa Environmental Research Center
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- INAMORI Yuuhei
- National Institute for Environmental Studies
Bibliographic Information
- Other Title
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- アミド硫酸による工場排水中の亜硝酸性窒素の処理効果
- アミド リュウサン ニ ヨル コウジョウ ハイスイ チュウ ノ アショウサンセ
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Abstract
Chemical denitrification of NO2-N conducted with amido sulfonic acid was studied to treat NO2-N in both bench and in situ experiments. In bench experiments, following optium conditions for NO2-N removal were obtained. The dosage of amide sulfate was 6.9 times equivalent to NO2-N load, pH value and stirring rate were 2.5 and 50 r.p.m., respectively in the bench reactor, and the period for reaction was more than 60 minutes. Nitrogenous gases like NOx and N2O, which are causative materials for air pollution and global warming, were not detected in the gas exhaust.<br>In situ experiment was made with wastewater containing NO2-N discharged from a factory and with its operating parameters same as the optimum conditions obtained in the bench experiment. It ran in batch style and was controlled automatically. Results showed that efficient chemical dentrification could be conducted through continuously striring during treated wastewater discharging, and through covering nitrite sensor to keep it from the nitrogenous gases generated in the reaction.
Journal
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- Journal of Japan Society on Water Environment
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Journal of Japan Society on Water Environment 21 (6), 353-359, 1998
Japan Society on Water Environment
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Keywords
Details 詳細情報について
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- CRID
- 1390001205081757824
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- NII Article ID
- 10007469152
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- NII Book ID
- AN10372439
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- COI
- 1:CAS:528:DyaK1cXltVWltLg%3D
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- ISSN
- 18813690
- 09168958
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- NDL BIB ID
- 4494326
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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