Naslov
Impact of the Zagreb Wastewater Treatment and Disposal on Sava River

Autori
Vouk, Dražen ; Malus, Davor

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Water Management and Hydraulic Engineering / Nachtnebel, H.P. ; Jugovic, C.J. - Beč : The University of Natural Resources and Life Sciences, Vienna (BOKU), 2005, 323-332

Skup
Ninth International Symposium on Water Management and Hydraulic Engineering

Mjesto i datum
Ottenstein, Austrija, 04.09.2005. - 07.09.2005

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
water quality; Sava River; CWWTPZ; relevant low flow (Q30; 95%)

Sažetak
This paper gives the Sava River water quality analysis of the upper section on its course through Republic of Croatia. Analyzed section covers the area between hydrological stations Jesenice (state border with the Republic of Slovenia) and Galdovo (city of Sisak). Since Zagreb and its nearby settlements wastewaters are not treated, the studied section of the Sava is consequentially heavily loaded with waste (organic) matter. Water quality simulations were undertaken using QUAL2E mathematical model. Detailed analyses of available measurements, based on data from the National Watercourse Quality Monitoring Program, have preceded the simulation (forecasting). Concerning the input data availability, the given simulation has included the following water quality parameters: BOD-5 and dissolved oxygen concentrations, saturation of water with oxygen and water temperature. Besides the analysis with untreated wastewater effluents (discharges) characterizing current state, the analysis of planned state with treated effluent were undertaken as well. Current state analysis was also used for model calibration. Furthermore, simulations were undertaken for two hydrological regimes of Sava River: the current regime under which Sava maintains (more or less) natural flow condition and the planned regime that assumes the construction of water spillovers (forming river-run lakes). From computed results of autopurification potential of the Sava, the necessity for the planned wastewater treatment plants construction is estimated. The emphasis is on determination of necessity and justifiability of the Zagreb central wastewater treatment plant (CWWTPZ) construction, as well as the impact of the CWWTPZ on the Sava River water quality.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA