ヨシ植栽水路における充填担体の空隙率が水路の窒素・リン除去能力に及ぼす影響 The Effect of Porosity of Packed Media on Nitrogen and Phosphorus Removal in Reed Bed Treatment System

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著者

    • 山田 一裕 YAMADA Kazuhiro
    • 東北大学大学院工学研究科土木工学専攻 Department of Civil Engineering, Faculty of Engineering, Tohoku University
    • 須藤 隆一 SUDO Ryuichi
    • 東北大学大学院工学研究科土木工学専攻 Department of Civil Engineering, Faculty of Engineering, Tohoku University

抄録

In order to solve the eutrophication problem in closed water area, it is well-known fact that to reduce the nitrogen and phosphorus is one of the important ways. However, such nutrients in present sewege systems are not sufficiently removed. The objective of this study is to propose a treatment system for secondary effluent by using reed bed treatment system with different packed media. The effect of por osity of packed media on nitrogen and phosphorus removal was discussed.The results indicated that the removal rate of nitrogen in reed bed treatment system packed with gravel was higher (1.54 gN·m-2·d-2) than those packed with sand and net material. According to numeral analysis 50 percent of nitrogen in the sand system was removed due to adsorption on sand, whereas in the gravel and net material systems 60 percent of it was removed by biological denitrification at the root zoon of reed. It was found that nitrification- denitrification at the root zoos of reed was important way for nitrogen removal, and the nitrogen removal at the root zoon was effectively carried out as the porosity of packed media increased. On the other hands 80 percent of phosphorus in the sand and gravel systems was adsorbed on packed media.

収録刊行物

  • 水環境学会誌 = Journal of Japan Society on Water Environment  

    水環境学会誌 = Journal of Japan Society on Water Environment 22(6), 505-510, 1999-06 

    公益社団法人 日本水環境学会

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各種コード

  • NII論文ID(NAID)
    10004452639
  • NII書誌ID(NCID)
    AN10372439
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09168958
  • NDL 記事登録ID
    4768679
  • NDL 雑誌分類
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL 請求記号
    Z16-1045
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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