Simple and high rate advanced sewage treatment by High-DO DHS reactor using pure oxygen

• Project/Area Number: 15K06278
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Civil and environmental engineering
• Research Institution: Gifu National College of Technology
• Principal Investigator: SUMINO Haruhiko 岐阜工業高等専門学校, その他部局等, 准教授 (50390456)
• Research Collaborator: KONDA Yukiko (TAKAISHI Yukiko) (株)トーエネック, 技術研究開発部 研究開発グループ 環境技術チーム ; TAKEKOSHI Kunio 岐阜工業高等専門学校, 産学官連携コーディネーター
• Project Period (FY): 2015-10-21 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: DHSリアクター / 間欠供給運転 / 生物膜 / 排水処理 / 高酸素濃度 / 排水の間欠供給 / 窒素除去 / 汚泥削減

Outline of Final Research Achievements

The intermittent feeding operation of High-DO DHS (Down-flow Hanging Sponge) reactor and DHS reactor couldn't control between aerobic to anaerobic completely. Although, the result of study was expected that a Hi-DHS/DHS reactor of single reactor and simple operation can denitrify, partial nitrify and prevent of biofilm overgrowth. Characteristics of retained sludge in the Hi-DHS/DHS reactor was different between the intermittent feeding operation and the continuous feeding operation, and also was different by organic matter concentration and hydraulics retention time.

Research Products

• [Journal Article] 酸素DHS法による産業排水処理 (2018)
  • Author(s): 近田有希子、角野晴彦、川上周司、珠坪一晃
  • Journal Title: 環境浄化技術 Volume: 17 Pages: 29-33
• [Presentation] Performance of DHS (Down-flow Hanging Sponge) Reactor for Treatment of Middle-strength Wastewater (2018)
  • Author(s): Sumino, H., Majima, K., Danshita, T., Kawakami, S., Takaishi-Konda, Y., Syutsubo, K.
  • Organizer: IWA Japan YWP Symposium Water-Wise Innovation Challenge!
  • Int'l Joint Research
• [Presentation] Treatment of food industrial wastewater by a DHS reactor and a Hi(high DO)-DHS reactor (2017)
  • Author(s): Haruhiko Sumino, Koji Majima, Tsuyoshi Danshita, Shuji Kawakami, Yukiko Takaishi-Konda, Kazuaki Syutsubo
  • Organizer: International Conference of “Science of Technology Innovation” 2017 (STI-Gigaku 2017)
  • Place of Presentation: Nagaoka, Niigata, Japan
  • Year and Date: 2017-01-05
  • Int'l Joint Research
• [Presentation] 酸素供給型DHS（Down-flow Hanging Sponge）リアクターによる食品工場排水の連続処理 (2016)
  • Author(s): 近田有希子、角野晴彦、珠坪一晃
  • Organizer: 第19回年日本水環境学会シンポジウム
  • Place of Presentation: 秋田県立大学（秋田県秋田市）
  • Year and Date: 2016-09-13
• [Presentation] Hi-DHS（High DO Down-flow Hanging Sponge）リアクターによる実豆腐工場排水の長期連続処理と汚泥性状 (2016)
  • Author(s): 石原優磨、竹中拓哉、角野晴彦、近田有希子、珠坪一晃
  • Organizer: 平成27年度土木学会中部支部研究発表会
  • Place of Presentation: 豊田工業高等専門学校（愛知県豊田市）
  • Year and Date: 2016-03-04