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

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