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STUDYING THE EFFECT OF URBAN RUNOFF FROM THE ROADWAY AND ANALYSIS OF THE CHEMICAL COMPOSITION OF STORMWATER
Abstract
Stormwater presents a significant problem in urban areas, especially in large cities. The intensified formation of impermeable surface leads to suppressing permeable-vegetation areas and, subsequently, substantial changes in the area's hydrological, environmental, and ecological characteristics. By changing the city's spatial structure, there may be an increase in flood peak, volume of runoff, and rising pollution in urban stormwater. As a result of this phenomenon, the aquatic environment can be degraded by changing water bodies' like rivers, lakes, etc. chemical and physical characteristics. Therefore, today more attention to storm water's qualitative parameters from paved surfaces as car parking, roadways, etc. This article focuses on capturing the first flush of stormwater runoff from impervious areas (roadway) during the rainfall events. The selected area of interest was near the Faculty of Civil Engineering campus in Bratislava, STU (Slovak Republic) - roadway Imricha Karvasa. In the chemical analysis were monitored qualitative parameters as reaction pH and organically bound halogens - AOX. The study aims are to compare the qualitative parameters of individual samples and evaluate them with recommendations of the Government of the Slovak Republic No. 269/2010. According to the results, the average value pH was 7.07, and the average concentration of AOX 767.77 ?g.l-1. The concentration of AOX extends the limit value, and therefore in the future, it is necessary to propose some measures (infiltration, retention tanks, etc.) to prevent unsuitable rainwater management.
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