Influence of Chl.a Concentration on the Purification of Nitrogen and Phosphorus in a Lagoon

• IRIE Tatsuyuki

  School of Environmental Science, University of Shiga Prefecture

• KANEKI Ryoichi

  School of Environmental Science, University of Shiga Prefecture

• FURUKAWA Masayuki

  School of Environmental Science, University of Shiga Prefecture

Bibliographic Information

Other Title

• 内湖における窒素・リン浄化に及ぼすＣｈｌ．ａの影響
• ナイコ ニ オケル チッソ リン ジョウカ ニ オヨボス Chl a ノ エイキョウ

Abstract

Generally in lagoons around Lake Biwa, a reduction of loads from non-point source was expected. The purification ratio of the Noda lagoon, however, recently failed for the following reasons: plankton production and efflux of nitrogen and phosphorus from the sediment.<BR>In this study, Chl.a concentration in the Noda lagoon is measured to investigate the relationship and influence of SS, COD, nitrogen and phosphorus.<BR>It is shown that SS and COD increase as Chl.a concentration rises, while nitrogen and phosphorus tend to decrease. According to the experiment of efflux from the sediment, the efflux loads of nitrogen and phosphorus are less than the inflow loads, then the inflow loads greatly influence Chl. a concentration.

Journal

• JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES

  JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES 18 (6), 674-680, 2005

  THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES

Keywords

• Chlorophyll-a
• Lagoon
• Purification
• Sediment

Details

• CRID: 1390001204440598912
• NII Article ID: 10016799002
• NII Book ID: AN10088049
• DOI: 10.3178/jjshwr.18.674
• ISSN: 13492853
• ISSN: 09151389
• NDL BIB ID: 7726093
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7726093
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed