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Table 1 Concentration-based TN removal efficiencies (%) for four low impact development (LID) technologies (adapted from Collins et al. [42])

From: Application of denitrifying wood chip bioreactors for management of residential non-point sources of nitrogen

LID Technologya Median
Green roofs (n = 9) 7.4%
Permeable pavement (n = 5) −2.4%
Bioretention - Conventional (n = 17) 25%
Bioretention - Modified (n = 5) 54.2%
  1. a n is the number of studies