Performance of wastewater subsurface drip emitters at low and normal pressure. Academic Article uri icon


  • Subsurface drip distribution is an important on-site wastewater treatment technique widely used with various soil types and restricted site conditions. This study evaluated the performance of five subsurface wastewater drip products under eight pressures, ranging from 0 to 310 kPa. Results showed that Netafim Bioline pressure-compensating emitters (Netafim Irrigation Inc., Fresno, California) had an application uniformity coefficient of 95% and a coefficient of variance (C(v)) of 4.9%. The average uniformity coefficient of Geoflow Wasteflow products (Geoflow USA, Charlotte, North Carolina) was 94.4%, with a C(v) value of 6.8%. Flowrate and pressure relationships were developed by analyzing low and normal operational pressure ranges, and R-square values ranged from 1.000 to 0.301. Geoflow pressure-compensating products were non-pressure-compensating emitters under low pressure. Netafim pressure-compensating emitters were partially pressure-compensating under low pressures. In normal operational pressure ranges, both Geoflow and Netafim products were fully pressure-compensating. Netafim pressure-compensating products were characterized as pressure-compensating over the full range of operational pressures.

published proceedings

  • Water Environ Res

author list (cited authors)

  • Duan, X., Lesikar, B. J., Kenimer, A. L., Arnold, M. A., & Persyn, R. A.

citation count

  • 1

complete list of authors

  • Duan, Xiaojing||Lesikar, Bruce J||Kenimer, Ann L||Arnold, Michael A||Persyn, Russell A

publication date

  • February 2008