PESSOA, J. D.; http://lattes.cnpq.br/2578226630006254; PESSOA, Julyanna Damasceno.
Resumen:
Agribusiness is responsible for high water consumption and high losses. With the
scarcity of water resources, minimizing water consumption in this sector is of
paramount importance.Therefore, this project aimed to analyze a hybrid system
composed of Bradley family hydrocyclone, parallel microfiltration ceramic
membrane system and reverse osmosis membrane. The hybrid system was used
to treat wastewater for reuse in irrigation. To this end, the hydrocyclone was first
constructed, followed by the physical characterization of the effluents used in the
hybrid system (lagoon and septic tank) located in the UFCG, in which
experimental data on volumetric concentration and mean particle size distribution
were obtained. The hydrocyclone was evaluated by changing both the process
variables (feed rate and operating time) and the physical properties of the effluent
to verify the solid / liquid separation efficiency. The prepared ceramic membranes
presented pore size of 1.33 μm and apparent porosity of 53%, working at the best
characterization pressure of 3.0 kgf.cm-2, with recovery of approximately 50% for
the smallest wastewater. volumetric concentration. The maximum total efficiency
(η) achieved by the hydrocyclone was approximately 40%. In the hybrid system
total nitrogen removal was up to: 87%, 77% for COD, 95% for BOD5,20, 99% for
turbidity, 89% for color, 80% for total dissolved solids and complete bacterial
removal. thermotolerant. Given the results obtained, the waters were classified
by class according to the CONAMA Regulation no 357 of 2005 for reuse, varying
their reuse between recreational activities, irrigation of vegetables and fruit
plants, animal desedentation, among others. The hybrid system has considerable
wastewater treatment capacity with wide application possibilities.