COAGULATION AND DISPERSION CHARACTERISTICS OF VOLCANIC ASH COAGULANTS AND THEIR APPLICATION TO TURBID WATER TREATMENT IN A RESERVOIR

• UMINO Hitoshi

  Public Works Research Institute

• KOBAYASHI Motoyoshi

  University of Tsukuba

• HAKOISHI Noriaki

  Public Works Research Institute

Bibliographic Information

Other Title

• 火山灰土凝集剤の凝集・分散特性と貯水池濁水処理への適用
• カザンバイド ギョウシュウザイ ノ ギョウシュウ ・ ブンサン トクセイ ト チョスイチ ダクスイ ショリ エ ノ テキヨウ

Abstract

Coagulation treatment is one of countermeasures for turbid water in a reservoir that is brought by lowering of surface level or sediment transport in a reservoir. We have taken volcanic ash coagulants which contain allophane and investigated their coagulation, dispersion characteristics and electrokinetic phenomena. Moreover, we conducted site experiment of coagulation treatment by using volcanic ash coagulants. Through this study, coagulation was observed when pH of suspension was adjusted to 7 to 9. Zeta potential of coagulants were raised by adding ultrasonic dispersion. High coagulation performance was obtained in site experiment, on the other hand, reduction of coagulants and effective dispersion method were desired for the practical use of volcanic ash coagulants.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 70 (4), I_1573-I_1578, 2014

  Japan Society of Civil Engineers

Keywords

• reservoir
• turbid water
• allophane
• coagulation experiment
• zeta potential

Details

• CRID: 1390282680329381888
• NII Article ID: 130005070119
• NII Book ID: AN10426673
• ISSN: 18808751
• ISSN: 2185467X
• ISSN: 09167374
• DOI: 10.2208/jscejhe.70.i_1573
• NDL BIB ID: 025438309
• Web Site: http://id.ndl.go.jp/bib/025438309
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025438309
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed