New Bioretention Drainage Channel as One of the Low-Impact Development Solutions: A Case Study from Poland

Agnieszka Stec () and Daniel Słyś
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Agnieszka Stec: Department of Infrastructure and Water Management, Rzeszow University of Technology, Al. Powstańców Warszawy 6, 35-959 Rzeszow, Poland
Daniel Słyś: Department of Infrastructure and Water Management, Rzeszow University of Technology, Al. Powstańców Warszawy 6, 35-959 Rzeszow, Poland

Resources, 2023, vol. 12, issue 7, 1-17

Abstract: In recent years, as a result of intensive urbanisation, a significant increase in the surface of impermeable areas has been observed, which results in changes in the hydrological cycle of catchments. In order to counteract these changes, low-impact development (LID) solutions are increasingly being implemented in urban catchments, including bioretention systems. Taking this into account, a new bioretention drainage channel (BRC) was designed, whose main task is retention, infiltration, and pre-treatment of rainwater. The pilot laboratory tests carried out on two BRC prototypes (K1 and K2) showed that the average rate of reduction of mineral-suspended solids from rainwater was 69% and 57%, respectively, for K1 and K2. Analysing the results of the research, it was found that the bioretention drainage channel is characterised by very high efficiency in removing petroleum hydrocarbons from rainwater, and the reduction rate of these pollutants for both the K1 and K2 channels was close to 100%. In turn, hydrodynamic studies carried out on the model of the urban catchment showed that the implementation of BRCs will reduce the peak runoff by more than 82%, and the maximum flow in the sewage network by 83%.

Keywords: rainwater; stormwater; sustainable development; bioretention; drainage channel; LID (search for similar items in EconPapers)
JEL-codes: Q1 Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2023
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