キャビテーション噴流を用いた新規水処理技術の開発

DOI DOI Web Site 参考文献12件

書誌事項

タイトル別名
  • A New Technology of Process Water Treatment Using Fluid-Jet Cavitation
  • キャビテーション フンリュウ オ モチイタ シンキ ミズショリ ギジュツ ノ カイハツ

この論文をさがす

抄録

A new technology using fluid-jet cavitation (CV-jet) has been developed in order to improve the quality of secondary fibers. CV-jet treatment was applied to process water in deinking. In this treatment, process water was injected into the reacting vessel by using a high-speed jet and cavitation bubbles were generated around the jet. The impact force produced by the collapse of the cavitation bubbles detached contaminants, such as ink and binder, from the surface of fines and ash particles. The effects of CV-jet treatments for process water in deinking were investigated in terms of the number of dirt speckles, the effective residual ink concentration (ERIC) and the brightness of the treated samples.<BR>The results showed that CV-jet treatment decreased the average size of dirt speckles in the process water, and the treatment also facilitated ink detachment from the fines in the water. The number and average size of dirt speckles after CV-jet treatment were decreased by the subsequent flotation. And the degree of dirt reduction after CV-jet treatment was much higher than without the treatment. The brightness of the fines after CV-jet treatment was also improved by the subsequent flotation. Similarly, the brightness gain through the flotation after CV-jet treatment was much higher than without the treatment. These results indicated that CV-jet treatments improved the quality of the fines in the process water, which were difficult to be improved by conventional deinking devices. Therefore, the CV-jet technology has the potential to improve deinking process.

収録刊行物

  • 紙パ技協誌

    紙パ技協誌 66 (10), 1139-1143, 2012

    紙パルプ技術協会

参考文献 (12)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ