有機物供給による土壌浸透水からの窒素除去に関する流れと混合過程のシミュレーション

書誌事項

タイトル別名
  • Simulation of the Transport Processes Occuted in Pouring Organic Compounds into Rapid Infiltrator for Removing Nitrogen from Wastewater.
  • ユウキブツ キョウキュウ ニヨル ドジョウ シントウスイ カラ ノ チッソ ジ

この論文をさがす

抄録

The method of rapid infiltration through soil lacks the ability in removing nitrogen from wastewater reason of insufficient of organic substances for denitrification in the anaerobic region. To urge the denitrification it was tried by pouring organic compounds into the deep region of the infiltrator, where the process of nitrification completed and the soils get to be anaerobic. For understanding the processes occurred in this procedure, the mathematical models (with the Finite Element Method) are presented to simulate the flowing and mixing processes occurred within the two-dimensional designed experimental apparatus. Because the hydraulic conductivity of water in variably saturated soils depends on pressure head and water content, this problem is strongly nonlinear. To solve this problem, the Newton-Rampson method have been utilized and the calculated results agree well with that of experimental ones. From the calculated results, a low ratio of denitrification is presumable according to the low mixing between these organic matters and nitrate by means of supplying organic substancs from single point.

収録刊行物

  • 水環境学会誌

    水環境学会誌 18 (6), 511-517, 1995

    公益社団法人 日本水環境学会

参考文献 (26)*注記

もっと見る

詳細情報

問題の指摘

ページトップへ