Positive pressure waste transfer system

A method of transferring waste through a waste transfer system having a hopper positioned between a toilet bowl and a discharge pipe, the waste transfer system further including a first valve between the toilet bowl and the hopper and a second valve between the hopper and the discharge pipe, the method including the steps of:

• opening the first valve to permit the passage of waste from the toilet bowl to the hopper;
• closing the first valve to completely seal the hopper;
• pressurizing the hopper while the first and second valves are closed;
• and
• opening the second valve to thereby force the waste from the hopper into and through the discharge pipe at a high velocity.

A waste transfer system comprising:

• a toilet bowl;
• a discharge pipe;
• a hopper positioned between the toilet bowl and the discharge pipe;
• and
• a valving arrangement operative to permit the introduction of material from the toilet bowl to the hopper under the force of gravity, selectively and completely seal the hopper, pressurize the hopper to a predetermined pressure with a source of compressed air, and discharge the material from the hopper to the discharge line at a high velocity by quickly depressurizing the hopper from the predetermined pressure to an atmospheric pressure.