The sanitary sludge, principal byproduct of sewage treatment, constitutes one of the major municipal environmental problems of the present time. The present study was aimed to evaluate the composting of septic tank sludge (SS) and vegetable solid waste (VW) and to determine the importance of the temperature for the process of sanitization of the treated substrate. The experiment, entirely randomized with three treatments and three repetitions, constituted of nine aerobic reactors with 100 L capacity. The proportions of the wastes utilized were T1: 100%VW; T2: 5%SS + 95%VW; T3: 10%SS + 90%VW. The conjugated composting showed to be a feasible alternative for destruction of helminth eggs and stabilization of the wastes. The temperature, pH and ecological relations present in the reactors were fundamental for this purpose.
Composting; septic tank sludge; vegetable solid waste; helminth eggs
