磁気分離法による活性汚泥中の糸状菌とフロック形成菌の分離

• 酒井 保藏

  宇都宮大学工学部応用化学科

• 高橋 不二雄

  宇都宮大学工学部応用化学科

書誌事項

タイトル別名

• The Removal of Filamentous Bacteria from the Activated Sludge Using the Magnetic Separation Methods.
• ジキ ブンリホウ ニ ヨル カッセイ オデイチュウ ノ シジョウキン ト フロック ケイセイキン ノ ブンリ

抄録

The aim in this paper is to clarify that the apparatus of rotating magnetic disk separation (apparatus of RMDS) is useful to remove filamentous bacteria from the activated sludge during the waste water treatment. The bulking sludge was mixed with ferromagnetic powder (Fe₃O₄) to prepare magnetic sludge (SVI: 430ml·g^-1 VSS) containing 2 g·l^-1 MLVSS and 2 g·l^-1 Fe₃O₄. The apparatus of RMDS composed of the aeration tank knd the magnetic separation tank equipped rotating magnetic disk with scraper was compared with that of gravitational sedimentation (apparatus of GS) composed of the aeration tank and the sedimentation tank on the separation of magnetic sludge. Six days experiments were carried out with adding 200mg·l^-1 COD_Cr as the influent at HRT=6h using both apparatuses of RMDS and GS. In case of GS method, the SVI kept constant at around 250ml·g^-1 VSS after 70h. On the other hand, the SVI with RMDS method decreased to about 200ml·g^-1 VSS after 30h, and about 100ml·g^-1 VSS after 90h. It was found by microscopic observation that filamentous bacteria remained in the apparatus of GS, but almost not in that of RMDS after the 6 d experiments.

収録刊行物

• 水環境学会誌

  水環境学会誌 22 (4), 323-326, 1999

  公益社団法人 日本水環境学会

キーワード

• ferromagnetic powder
• filamentous bacteria
• magnetic separation
• activated sludge

詳細情報

• CRID: 1390001205081566848
• NII論文ID: 10004452163
• NII論文ID: 10007660754
• NII書誌ID: AN10372439
• DOI: 10.2965/jswe.22.323
• COI: 1:CAS:528:DyaK1MXksVWqsrc%3D
• ISSN: 18813690
• ISSN: 09168958
• ISSN: http://id.crossref.org/issn/09168958
• NDL書誌ID: 4693120
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4693120
• Web Site: https://www.jstage.jst.go.jp/article/jswe/22/4/22_4_323/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可