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Development of an empirical formula for estimation of bioretention outflow rate
Temur, Rasim/0000-0001-7154-2286; Gulbaz, Sezar/0000-0002-2274-6896 ; WOS:000466983100007 ; Urbanization of a watershed affects both surface water and groundwater resources. When impervious area increases, the excess runoff and volume of water collected at the downstream end of the watershed also increases, due to the decrease in groundwater recharge, depression storage, infiltration and evapotranspiration. Low-impact development (LID) methods have been developed in order to diminish adverse effects of excess stormwater runoff. Bioretention is one of the LID types which is used to prevent flooding by decreasing runoff volume and peak flow rate, and to manage storm-water by improving water quality. In this study, an empirical formula is derived to predict the peak outflow out of a bioretention column as a function of the ponding depth on bioretention, hydraulic conductivity, porosity, suction head, initial moisture content and height of the soil mixture used in the bioretention column. Coefficients of the empirical formula are determined by using metaheuristic algorithms. For analyses, the experimental data obtained from rainfall-watershed-biordention (RWB) system are used. The reliability of the empirical formula is evaluated by calculating the absolute per cent error between the peak value of the measured outflow and the calculated outflow of the bioretention columns. The results show that the performance of the empirical formula is satisfactory. ; Scientific Research Projects Coordination Unit of Istanbul UniversityIstanbul University [BEK-2017-26748]; Scientific Research Projects Coordination Unit of Istanbul UniversityIstanbul University ; This work was supported by Scientific Research Projects Coordination Unit of Istanbul University, Project number BEK-2017-26748. The writers would like to thank Scientific Research Projects Coordination Unit of Istanbul University for their support in undertaking this work. The authors would like to express their gratitude to the anonymous reviewers and the editor for their excellent suggestions which strengthened the paper.
Development of an empirical formula for estimation of bioretention outflow rate
Temur, Rasim/0000-0001-7154-2286; Gulbaz, Sezar/0000-0002-2274-6896 ; WOS:000466983100007 ; Urbanization of a watershed affects both surface water and groundwater resources. When impervious area increases, the excess runoff and volume of water collected at the downstream end of the watershed also increases, due to the decrease in groundwater recharge, depression storage, infiltration and evapotranspiration. Low-impact development (LID) methods have been developed in order to diminish adverse effects of excess stormwater runoff. Bioretention is one of the LID types which is used to prevent flooding by decreasing runoff volume and peak flow rate, and to manage storm-water by improving water quality. In this study, an empirical formula is derived to predict the peak outflow out of a bioretention column as a function of the ponding depth on bioretention, hydraulic conductivity, porosity, suction head, initial moisture content and height of the soil mixture used in the bioretention column. Coefficients of the empirical formula are determined by using metaheuristic algorithms. For analyses, the experimental data obtained from rainfall-watershed-biordention (RWB) system are used. The reliability of the empirical formula is evaluated by calculating the absolute per cent error between the peak value of the measured outflow and the calculated outflow of the bioretention columns. The results show that the performance of the empirical formula is satisfactory. ; Scientific Research Projects Coordination Unit of Istanbul UniversityIstanbul University [BEK-2017-26748]; Scientific Research Projects Coordination Unit of Istanbul UniversityIstanbul University ; This work was supported by Scientific Research Projects Coordination Unit of Istanbul University, Project number BEK-2017-26748. The writers would like to thank Scientific Research Projects Coordination Unit of Istanbul University for their support in undertaking this work. The authors would like to express their gratitude to the anonymous reviewers and the editor for their excellent suggestions which strengthened the paper.
Development of an empirical formula for estimation of bioretention outflow rate
Gülbaz, Sezar (author) / Kazezyılmaz-Alhan, Cevza Melek (author) / Temür, Rasim (author) / İÜC, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümü
2019-01-01
215
Article (Journal)
Electronic Resource
English
DDC:
690
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