The objective of this work was to study the effect of the use of treated domestic sewage on the performance of a drip irrigation system. Crude sewage was subjected to a treatment sequence and applied for 120 hours on a coffee crop. Drip flow and coefficients of uniformity and distribution were evaluated and clogging factors were identified. The results showed that biofilm formation inside drippers decreased the uniformity of application of the effluent and that filtration alone does not prevent clogging of emitters.
Drippers; wastewater; clogging