Delvio Sandri

Qualidade da água para irrigação de um córrego após receber efluente tratado de abate bovino

Quality of irrigation water is very important to conserve products quality and the operation of irrigation equipment, especially when it contains effluent from residuary sources. The aim of this study was to evaluate the release of treated effluent from cattle slaughter on irrigation water quality of the Jurubatuba Stream, Anapolis -GO, Brazil. The effluent and water samples were taken on six different days and at the following locations: at the discharge of treated effluent before released into the stream -P1, 50 m upstream from the discharge point -P2, 50 m downstream from the discharge point -P3 and 120 m downstream from the discharge point -P4. Variables analyzed were dissolved solids, pH, iron, water hardness, sodium, calcium, magnesium, manganese, SAR, boron and BOD. Medium or high risk of emitters clogging were noticed by possible use of effluent for trickle irrigation when considering variables such as pH, dissolved solids, Iron, Manganese and water hardness. Water at analyzed points in the Jurubatuba Stream presented medium risk of clogging and moderate restriction of use in relation to water infiltration problems. At all analyzed points, the BOD concentrations were higher than the limit for irrigation of vegetables consumed fresh or cooked.