The study was conducted with the objective of evaluating the hydraulic characteristics of microsprinklers after use with wastewater treated by an upflow anaerobic sludge blanket (UASB anaerobic reactor) and a polishing pond during a period equivalent to two years. The hydraulic characteristics determined for the new and used emitters were the following: manufacturing coefficient of variation, coefficient of use and the discharge-pressure head equation. The results indicated no appreciable variations after using wastewater. The value of the mean discharge for nominal pressure was reduced by 4.97% in relation to the new. The flow regime did not change and the variation coefficient increased but continued being of excellent category as per ASAE classification.
wastewater; localized irrigation; discharge
