Overview of the Lilliput Sewage & Wastewater Treatment Process.
Sewage is first sent to a septic tank where it is pre-digested. If you have the full Lilliput system (which eliminates the need for a septic tank), the raw sewage is sent to Lilliput® tanks where it is pre-digested by anaerobic bacteria, this converts the majority of the organic matter into simple chemicals.
When there is an excess of flow, the sewage or wastewater is sent back to the septic tank which ensures proper, full treatment of the effluent.
If you want to use the treated or processed water for anything other than irrigation, then a clarifier would be used to further treat the discharge by removing remaining solids and returning them to the septic tank.
Finally the discharge is disinfected, this ensures that pathogens are removed from the water.