Abstract: A sewage treatment device [10] is disclosed for use with a toilet [12] having a water flush input [16] and a sewage output [22]. The invention incorporates a treatment tank [56] connected for receiving the sewage from the sewage output [22] of the toilet. A disinfectant holding tank [58] is included for holding a disinfectant such as conventional household bleach. A mascerator blade [74] is disposed within the treatment tank [56] for mascerating the sewage to reduce the size of the particulate matter within the treatment tank [56]. An electric motor rotates the mascerator blade [74] and simultaneously pumps a disinfectant from the disinfectant holding tank [58] to the treatment tank [56]. A discharge pump [86] discharges the treated sewage from the treatment tank [56]. A control senses the level of the sewage in the sewage treatment tank and controls the sequence of operation of the mascerator blade [74] and the discharge pump [86].