DEVELOPMENT AND EVALUATION OF SAND FILTRATION PROCESSES FOR THE TREATMENT OF ARSENIC-POLLUTED GROUNDWATER IN BANGLADESH

• SUGIMURA Masahiro

  東京電力株式会社

• FUKUSHI Kensuke

  東京大学環境安全センター

• SHIMAZAKI Dai

  国立保健医療科学院

• YAMAMOTO Kazuo

  東京大学環境安全センター

Bibliographic Information

Other Title

• バングラデシュにおけるヒ素汚染地下水の浄化装置の評価とヒ素除去機構の解明
• バングラデシュ ニ オケル ヒソ オセン チカスイ ノ ジョウカ ソウチ ノ ヒョウカ ト ヒソ ジョキョ キコウ ノ カイメイ

Abstract

Arsenic contamination of groundwater is found to be one of the most serious problems Bangladesh and surrounding region. This research report aim to investigate the removal mechanism of arsenic in oxidation-sand filtration process installed in a small community in Bangladesh. In order to remove arsenic at satisfactory level, the existence of iron with arsenic is found to be very important. Low concentration of iron may results unsatisfactory arsenic removal efficiency. Laboratory experiment exhibited that arsenic associated with small particles of iron hydroxide was the major species of arsenic released from the filter. This phenomenon is the major mechanism of leakage of arsenic from sand filters. In the sand filtration system, up-flow filtration was more effective than down-flow filter.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 2005 (783), 783_23-783_31, 2005

  Japan Society of Civil Engineers

Keywords

• Bangladesh
• arsenic
• iron
• AIRP
• IARP

Details

• CRID: 1390282680578456320
• NII Article ID: 10013814957
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.2005.783_23
• ISSN: 18827187
• ISSN: 02897806
• NDL BIB ID: 7271612
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7271612
• Web Site: https://www.jstage.jst.go.jp/article/jscej/2005/783/2005_783_783_23/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed