Caracterização química dos dejetos de suínos mantidos sob dois sistemas de higienização das baias.

Abstract

Tends in view the production of notables volumes of waste originating from of farm pig section in the last decades, handling techniques were developed, for such residues, capable of they minimize the environmental impact for them caused. In this work it was aimed at to evaluate the effect of different cleaning systems (wash and scratching followed by wash) of pickets of swine in growth and termination with relationship to the chemical characterization of the waste. Therefore, the field semicontinuous biodigestors, with capacity of 60 L, kept under ambient temperature and supplied daily. In the chemical characterization of rehearsal of anaerobic biodigestion continuous the concentration of existent minerals was evaluated in the affluent and effluent. The scratching system followed by wash presented larger concentrations in the affluent than in the effluent for N, P, K, Ca, Mg, Na, Fe, Zn, Cu, Mn e Cr, when compared to the wash system, presenting significant difference (P < 0,01). It was possible to verify that the affluent of wash system presented a smaller concentration of N (0,27 g/kg) and P (0,04 g/kg), while the affluent of scratching system presented to same elements values 0,80 g/kg and 0,08 g/kg, respectively for N and P. The collect system, with your respective dilution of dejection, interfered in the concentration of nutrients of affluents and appraised effluents.