An apparatus for treating organic waste. The apparatus includes a tank having an interior chamber. A weir having a lower opening is disposed in the tank and this weir divides the tank into an inlet chamber and an outlet chamber. The inlet chamber receives organic waste and an outlet discharges liquid to a waste disposal system from the outlet chamber. Microbes capable of biodegrading organic waste are introduced into the inlet chamber. A pump recirculates liquid from the bottom of the inlet chamber to the top of the inlet chamber.