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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Hydro-environment : Effect of water conveyance to improve water quality in the barato river
Effect of water conveyance to improve water quality in the barato river
Author : KOKI SUGIHARA(1), MAKOTO NAKATSUGAWA(2
ABSTRACT
Water conveyance was carried out due to improve eutrophic, stagnated water bodies in the Barato river. This study
clarified the water quality change by water conveyance, based on our surveys. The water quality surveys found that
inorganic nitrogen (IN) and biological oxygen demand (BOD) were decreased after water conveyance. And inorganic
phosphorus (IP) was increased. From calculation results, it was assumed that IN and BOD decreasing was caused by
dilution and phytoplankton decreasing. IP increasing assumed due to accumulation of unused phosphorus by
phytoplankton. And remarkable changes seem in survey result. Blue-green algae decreased selectively with water
conveyance year by year. However, blue-green algae increased again, in additionally dominant species of blue-green
algae change to Merismopedia punctate from Phormidium spp
File Size : 901,006 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Hydro-environment
Date Published : 28/08/2015
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