So simple that only a person with limited time,unlimited money, or Waste Management, would have a problem with it. I don't understand why every school, municipality and entrepreneur isn't doing this. The utilities also should be concerned, but given the apathy and laziness of most people, their business model is safe.
Maybe garbage disposal manufacturers would joint venture- all one needs is separate piping out and then back in.
Eliminate 95% of the weeds in your lawn by mowing 3 inches or higher. Then plant tiny ads: