STUDY ON THE KINETICS OF SUBSTRATE REMOVAL AND MODELING OF FLOW PATTERN IN AN OXIDATION DITCH

DOI

Bibliographic Information

Other Title
  • オキシデーションディッチ法における基質除去動力学と槽内流動・混合とに関する基礎的研究

Description

The modeling of the simultaneous removal of organic substances and nitrogen compounds in oxidation ditch (OD) process and experiments with a laboratory scale apparatus were performed to obtain information 1) on the performance of water quality in a ditch and 2) on the effects of operating conditions on substrates removal. The change of water quality represented by the parameters such as BOD, Kj-N, NOx-N, DO, alkalinity, and so on, in the ditch, was analyzed by combining both the kinetic model of Monod-type expression including the effect of other substances and the tank-in-series model describing the mixing in a ditch. As a result, the removal ratio of BOD and Kj-N was. expected to increase with the hydrauric retention time (HRT). As for T-N, optimum HRT was found in both of the results of experiment and calculation, probably because the removal of T-N was closely related to the distribution of DO level.<BR>In addition, the mixing model in a ditch, consisting of a virtically two phase flow with different flow velocity, was proposed to develop a model applicable to an actual OD process.

Journal

Details 詳細情報について

  • CRID
    1390001204112346112
  • NII Article ID
    130003775440
  • DOI
    10.11532/proes1983.22.227
  • ISSN
    18848281
    09134069
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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