プール水の循環濾過・殺菌プロセスにおける濁度変化および塩素消費量の推算 Evaluation of Variation over Time of Turbidity and Chlorine Consumption in Cycle Filtration and Disinfection Process of Pool Water

この論文にアクセスする

この論文をさがす

著者

抄録

プール水の浄化・殺菌においては,濁度と遊離残留塩素の制御が重要である.一般に,汚濁物質は循環濾過によって除去され,また遊離残留塩素濃度に応じて消毒剤が間欠的に注入される.本研究では,砂濾過機と次亜塩素酸ナトリウムによる消毒システムを備えた室内温水プールにおいて,決まった人数の遊泳者が決まった時間遊泳する種々の計画遊泳を行い,プール水中の濁度,遊離残留塩素濃度および塩素剤注入量の経時変化を測定した.濾過機による汚濁物質の除去特性を考慮にいれた修正室谷式に基づき,汚濁物質排出の原単位である遊泳者1人が単位時間あたりに排出する汚濁物質量の値を用いて,濁度の経時変化を精度良く推定できた.また,遊離残留塩素の消費が遊泳者に由来する部分と遊離残留塩素濃度に比例する部分からなると考え,ある一定レベルの遊離残留塩素濃度を保つために必要な塩素注入量の経時変化を精度良く計算できることを示した.これらの結果は,遊泳プールの設計や運転に対して基礎的知見を与えるものと考えられる.

Control of the turbidity and concentration of free residual chlorine is of growing importance in the purification and disinfection of pool water. In general, suspended solids are removed from pool water by cycle filtration, and disinfectant is injected into pool water intermittently, depending on the concentration of free residual chlorine. In this study, various types of program swimming, in which a given number of people swam at a scheduled time, was performed in a heated indoor pool equipped with a sand filter and disinfection system using sodium hypochlorite. The variations over time of the turbidity, the concentration of free residual chlorine in pool water, and the dosage of disinfectant were measured. The variation of the turbidity over time was well evaluated using the quantity of turbid material secreted outwardly per man-hour, on the basis of the modified Muroya equation, in which the removal characteristics of turbid material by the filter were taken into account. The calculated results accorded well with the measured turbidity. Moreover, the chlorine consumption needed to maintain a consistent level of free residual chlorine in pool water was calculated on the assumption that the consumption consists of two parts: a part caused by swimmers and a part that was proportional to the concentration of free residual chlorine in pool water. As a result, the variation of the consumption of free residual chlorine was well evaluated. These results serve as a basis for the design and operation of a swimming pool.

収録刊行物

  • 化学工学論文集  

    化学工学論文集 34(2), 234-241, 2008-03-20 

    The Society of Chemical Engineers, Japan

参考文献:  19件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10021110661
  • NII書誌ID(NCID)
    AN00037234
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    0386216X
  • NDL 記事登録ID
    9435368
  • NDL 雑誌分類
    ZP5(科学技術--化学・化学工業--化学工学)
  • NDL 請求記号
    Z17-725
  • データ提供元
    CJP書誌  NDL  J-STAGE 
ページトップへ