Suspendirani sedimenti v reki Dravi
Suspended sediments in the Drava river

slovenian

2014

volume 63, issue 11

Zveza društev gradbenih inženirjev in tehnikov Slovenije
(Obvezni izvod spletne publikacije)

The paper deals with the investigated correlation between the concentrations of suspended solids in the river Drava measured by optical sensors and laboratory determined quantities of suspended solids which may settle in the standing water. For this purpose, in the period of one year, 90 samples of water were taken directly at the optical sensors. At the same time, the temperatures and the pH values of water were measured. The microbiological parameters of water, which included the determination of the quantities of phytoplankton, zooplankton, bacteria, fungi, and organic debris have been investigated in the laboratory as well as mineralogical and chemical compositions of the sediments and their grain size distribution. The results showed that the field measured concentrations of suspended solids by optical sensors are very usable for the assessment of those quantities of suspended solids which can settle in the standing water as well as for their grain size distribution. This applies if the amount of phytoplankton and organic debris in the water is small.

28.12.2015