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Performance of Wastewater Subsurface Drip Emitters at Low and Normal Pressure
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.
Performance of Wastewater Subsurface Drip Emitters at Low and Normal Pressure
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.
Performance of Wastewater Subsurface Drip Emitters at Low and Normal Pressure
Duan, Xiaojing (author) / Lesikar, Bruce J. (author) / Kenimer, Ann L. (author) / Arnold, Michael A. (author) / Persyn, Russell A. (author)
Water Environment Research ; 80 ; 142-148
2008-02-01
7 pages
Article (Journal)
Electronic Resource
English
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