Seasonal variations in hydraulic performance of rock-plant filters.

  title={Seasonal variations in hydraulic performance of rock-plant filters.},
  author={Q He and K. R. Douglas ‐ Mankin},
  journal={Environmental technology},
  volume={22 9},
Hydraulic retention time (HRT) may be one of the major factors causing seasonal variations in treatment efficiency of rock-plant filters. Six meso-scale rock-plant filters, three with narrowleaf cattails (Typha augustifolia) and three unplanted, were investigated to evaluate the influence of plant factors on HRT. Tracer studies were conducted during summer, fall, and spring to evaluate seasonal variations in hydraulic performance. Significant evapotranspiration was observed during summer, up to… CONTINUE READING