Phosphorus retention patterns along the Tisza River, Hungary

Á Kovács, Zs Kozma, V. Istvánovics, M. Honti

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The aim of this study was to assess in-stream retention of suspended solids (SS) and total phosphorus (TP) at low flow condition in a large watercourse, the Tisza River. The analysis was based on a longitudinal water quality profile obtained in July 2006 during a cruise along the Hungarian section of the river (nearly 600 km). Water samples were taken manually for SS and TP every half an hour (ca. 5.5 km). Additionally, concentration of SS was calculated from on-line turbidity records taken every 6 s (ca. 10 m). Velocity field was calculated with a 1D hydrodynamic model calibrated for low flow conditions. To describe the transport, a simple first-order equation was adjusted to the SS profile after estimating the potential maximum of SS that the flow with the given velocity could transport. Specific P content of SS was related to velocity to estimate longitudinal TP profile. Retention of TP amounted to 42% along the Hungarian section of the Tisza River at a flow of 110 m3 s-1. Storage reservoirs significantly influenced the longitudinal retention pattern, upstream of Dam II (river kilometre 404), net TP retention reached 73%, while the downstream section was a source of TP.

Original languageEnglish
Pages (from-to)391-397
Number of pages7
JournalWater Science and Technology
Volume59
Issue number2
DOIs
Publication statusPublished - 2009

Fingerprint

Phosphorus
Rivers
phosphorus
river
low flow
Turbidity
Dams
Water quality
turbidity
Hydrodynamics
dam
hydrodynamics
water quality
Water
water

Keywords

  • River retention
  • Suspended solids
  • Tisza River
  • Total phosphorus
  • Turbidity

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

Cite this

Phosphorus retention patterns along the Tisza River, Hungary. / Kovács, Á; Kozma, Zs; Istvánovics, V.; Honti, M.

In: Water Science and Technology, Vol. 59, No. 2, 2009, p. 391-397.

Research output: Contribution to journalArticle

Kovács, Á ; Kozma, Zs ; Istvánovics, V. ; Honti, M. / Phosphorus retention patterns along the Tisza River, Hungary. In: Water Science and Technology. 2009 ; Vol. 59, No. 2. pp. 391-397.
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