Swine manure management process

摘要

MU "PROCESS OF SWINE WASTE MANAGEMENT" MV. The following report refers to the development of a PROCESS FOR MANAGE PIG WASTE, whose operational dynamics of this system make treatment compatible with the use of waste. The utilization results from the portion of the residue with the highest concentration in dry matter (sludge), retained through the separation of phases (decanter) being destined for farming. The effluent waste from the decanter with less dry matter content will undergo a treatment process (series stabilization ponds) according to the following criteria: The hydraulic model is considered in complete mixture: therefore S = S ~ o ~ / 1 = kt , where the soluble biochemically oxidizable carbonaceous concentration (BODs) is quantified, for the effluents between lagoons obeying a coefficient of determination "K" of 0.16 for the first anaerobic lagoon (A ~ 1 ~), o, 13 for the second anaerobic (A ~ 2 ~), 0.11 for the first optional (F ~ 1 ~), 0.99 for the second optional (F ~ 2 ~). In the same order, the following hydraulic retention times (TFH) follow: 40, 25, 35 and 15; for the finishing phase: 35, 25, 30 and 15 for matrix units and complete cycle. The volumetric application rate for A ~ 1 ~ = 0.15 kgDBO ~ 5 ~ / m³. day, for A ~ 2 ~ = 0.10 kgDBO ~ 5 ~ / m³. day, surface application rate for optional ponds will be 167 kgDBO ~ 5 ~ / ha. day for F ~ 1 ~ and 90 kg DBO ~ 5 ~ / ha. day. The present process for F ~ 1 ~ is 90 kgDBO ~ 5 ~ / ha.day. The present process establishes that the second anaerobic lagoon will consist of a set of baffles, causing the substrate to follow the upward and downward flow. The distance between the baffles is determined using the following criteria: the distance between the baffles causes the immersion of the liquid mass (D / 2) is half that of the rise (D). It also establishes that the second optional pond will consist of a set of baffles arranged alternately, making the hydraulic regime tend to flow in a piston. For the filtration of nutrients, a last lagoon called a filter lagoon will be inserted, containing water hyacinth, where rainwater from the facilities' gutters will also be channeled in addition to the effluent from the fourth lagoon. As an option, it is suggested that the F ~ 1 ~ effluent be introduced in continuous flow to a pond with a high rate of degradation, the effluent of which will be destined and dams containing herbivorous filtering fish.