Eutrophication potential of wastewater treatment plants in the upper reaches of svratka river

Abstract

During the year 2012 thirteen selected sites were monitored in the stretch between Brno reservoir and Nedvedice village. Based on the former monitoring, samples from the major tributaries (Besenek, Loucka, Nedvedicka, Lube, Bily brook) and Svratka River above and below monitored area were taken. Besides the water from tributaries and the river also samples of water discharged from sewage treatment plants in villages Nedvedice, Doubravník, Brezina and Veverská Bítýška were taken. Basic chemical and physical parameters of water were measured. Major impact of monitoring was to target the amount of nutrients, especially phosphorus. Requirements for salmonid (Svratka upper, Nedvedicka, Loucka, Besenek, Bily brook) or cyprinid (Lube, Kurimka, Svratka lower) waters quality meet at all localities. Wastewater treatment plants (WWTP) meet the emission standards in all cases. Monitoring of the amount of nutrients out-fl owing from WWTP at extreme fl ows is not usually carried out at all. Based on our results, the phosphorus infl ow into Brno reservoir would be up to 50 t per year in the case of average fl ow 7.96 m3.s-1 of Svratka River in Veverská Bítýška. © 2014 International Newsletters Ltd.