Aproveitamento de aguapé (Eichornia crassipes) e biossólido como composto agrícola

Abstract

The watery wine and the silt one are two problematic factors related to the process of eutrophication and the treatment of effluent in stations of treatment of sewer. Ahead of this affirmation, if it considered to study an alternative experimentally in order to give an adequate destination to these materials. The compost was the modality of Ecotechnology chosen for the reversion of this condition. The present work tests the viability of the done composition to the base of these materials, with emphasis in the elimination of pathogens for use in agriculture. The compost process was evaluated in stacks confectioned with watery wine and silt, that is material are rich in Nitrogen. To get the ideal ratio of Carbon and nitrogen, sawdust joined, that is a rich material in Carbon. 4 aerobic stacks had been constructed, being that the fourth stacks was constructed to only corroborate with the result of temperature of the others 3 stacks. The three first mounted stacks had 0,7 meters of height for a meter of width and 1m of length. They had been monitored, how much the variation of the temperature 3 times per week, during 53 days. The fourth stack was monitored per 28 days. The aeration made possible the stabilization fastest of the material. Analyses of nutrient macro and micron had been carried through in each material individually at the beginning of the compost process searching to compare with the results in the end of the process and to verify if it had significant loss of the necessary nutrients to agriculture. The gotten results had demonstrated to the potential of this made up and its capacity of elimination of pathogene in a small scale of time, being obtained a average of elimination of patógenos of 99,90% of the three stacks.