Water quality and head loss in irrigation filters
DOI:
https://doi.org/10.1590/S0103-90162004000600001Keywords:
drip irrigation, filtration, chlorine, non-woven synthetic fabric, fertilizersAbstract
Among the irrigation systems used today, trickle irrigation is one of the most efficient methods. This research, conducted by means of field tests, had the objective of comparing head loss evolution on water filtration with a disc filter (130 mum) and a non-woven synthetic fabric filter used in a drip irrigation system. The test consisted of fertirrigation with organic fertilizer, and chemical treatment of the water with sodium hypochlorite. Physical, chemical, and biological parameters were analyzed, such as: pH, turbidity, suspended solids, dissolved solids, EC, hardness, Langelier index, total iron, manganese, sulfides, algae, and bacteria. The water source used in this experiment was from an open reservoir, where an experimental trickle irrigation system had been installed. The research was developed in four steps lasting 30 days each, during different seasons. The chemical factors pH, total iron, and concentration of sulfides presented a medium risk of clogging the emitters. All other physical and biological water quality parameters analyzed resulted in values that did not present an emitter-clogging risk. There was a correlation of results between physical parameters turbidity, suspended solids, and algae, and suspended solids. Fertirrigation influenced water quality. The concentration of free chlorine was higher in the effluent from the disc filter. Head loss evolution in the non-woven synthetic fabric filter was more striking and faster than in the disc filter.Downloads
Download data is not yet available.
Downloads
Published
2004-12-01
Issue
Section
Agricultural Engineering
License
All content of the journal, except where identified, is licensed under a Creative Common attribution-type BY-NC.How to Cite
Water quality and head loss in irrigation filters . (2004). Scientia Agricola, 61(6), 563-572. https://doi.org/10.1590/S0103-90162004000600001