Planning methodology of destratification system in a reservoir against algal bloom

M. Umeda, S. Furuya, H. Tanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Bubble-diffuse type destratification system is widely used in lakes and reservoirs that have problems related to algal water bloom caused by cyanobacteria. However, the planning methodology on proper installation of destratification system in terms of number, or air flow rate, of bubblers has not been established. In this paper, we propose a methodology to tackle this problem, by simulating and evaluating the gradient of water temperature of near-surface layer which is known to have relationships with occurrence of water bloom. A laterally averaged 2-dimensional hydrodynamic model was developed and verified in Haji Dam reservoir, where the destratification system has already been installed against algal bloom. By using the model, the proposed methodology was applied to the reservoir under the condition in 2001, and the current installation scale is evaluated as proper.

Original languageEnglish
Title of host publicationAdvances in Water Resources and Hydraulic Engineering - Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS
PublisherSpringer Berlin Heidelberg
Pages441-446
Number of pages6
ISBN (Print)9783540894643
DOIs
Publication statusPublished - 2009 Jan 1
Event16th Congress of Asia and Pacific Division of International Association of Hydraulic Engineering and Research, APD 2008 and the 3rd IAHR International Symposium on Hydraulic Structures, ISHS 2008 - Nanjing, China
Duration: 2008 Oct 202008 Oct 23

Publication series

NameAdvances in Water Resources and Hydraulic Engineering - Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS

Other

Other16th Congress of Asia and Pacific Division of International Association of Hydraulic Engineering and Research, APD 2008 and the 3rd IAHR International Symposium on Hydraulic Structures, ISHS 2008
CountryChina
CityNanjing
Period08/10/2008/10/23

Keywords

  • Destratification
  • Eutrophication
  • Numerical simulation
  • Reservoir
  • Water bloom

ASJC Scopus subject areas

  • Civil and Structural Engineering

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