NOVELTY - A waste treatment system configured to treat domestic sludge and septage, comprises first stage adapted to separate soluble gases; second stage adapted to separate solids from liquid and further configured to stabilize biosolids to mineralize nitrogen compounds; and third stage adapted to oxidize soluble carbon and nitrogen compounds.    USE - The system is used for treating domestic sludge and/or septage (claimed).    ADVANTAGE - The system is environmentally friendly and is scalable to treat septage, domestic sludge or both in widely varying community sizes ranging from subdivisions to municipalities. It allows for reduced power requirements, reduced operating personnel, reduced carbon output, and additional results not typically achieved with existing waste treatment systems.    DETAILED DESCRIPTION - A waste treatment system configured to treat domestic sludge and septage, comprises:    (A) first stage adapted to separate soluble gases and to deliver 100 m3/m3 sludge delivered, the first stage configured with 40 m2 land/100 m3/day sludge and/or septage introduced into the first stage;    (B) second stage in fluid communication with the first stage, and adapted to separate solids from liquid and configured with 16-76 m2/1000 kg solids applied on an annual basis in the sludge and/or septage, and further configured to stabilize biosolids, to mineralize nitrogen compounds, and to reduce total volume of sludge and/or septage by 90-95%;    (C) third stage in fluid communication with the second stage, and adapted to receive effluent from the second stage and having an effective volume of 3.5-5 m3/m3 effluent delivered to the third stage from the second stage and having an area of at least 2.5-3 m2/m3 sludge and/or septage introduced into the waste treatment system, and further adapted to oxidize soluble carbon and nitrogen compounds;    (D) fourth stage in fluid communication with the third stage, and adapted to receive effluent from the third stage and having an effective treatment volume of at least 1 m3/100 m3 filtrate and occupying 2 m2/100 m3 sludge and/or septage introduced into the waste treatment system;    (E) fifth stage in fluid communication with the fourth stage and configured to have at least 1.5-1.75 m2/m3 effluent received from the fourth stage and configured with an effective treatment volume of 2.5 m3/m3 of sludge and/or septage introduced into the waste treatment system; and    (F) sixth stage in fluid communication with the fifth stage and configured to have at least 2.5 m2 of land/m3 sludge and/or septage introduced into the waste treatment system.    An INDEPENDENT CLAIM is also included for treating domestic sludge and/or septage, comprising:    (a) introducing domestic sludge and/or septage into a first stage adapted to separate and oxidize soluble gases;    (b) aerating fluid in the first stage; passing effluent from the first stage to a second stage adapted to separate solids from liquid sludge and/or septage, to stabilize biosolids such that they meet Federal 503 part (a) regulations for the land application of biosolids, to mineralize nitrogen compounds, and/or to reduce the total volume of sludge and/or septage by 90-95%;    (c) passing effluent from the second stage to a third stage adapted to provide biological oxidation of water soluble carbon and nitrogen compounds;    (d) aerating fluid in the third stage;    (e) passing effluent from the third stage to a fourth stage adapted to further oxidize carbon and nitrogen compounds;    (f) passing effluent from the fourth stage to a fifth stage adapted to receive soluble oxidized nitrogen and carbon compounds and suspended solids from the fourth stage, and to remove the oxidized nitrogen and carbon compounds;    (g) passing effluent from the fifth stage to a sixth stage adapted to remove remaining carbon and nitrogen compounds, suspended solids, and pathogenic organisms; and    (h) discharging treated wastewater from the sixth stage.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic of a waste treatment system.    Screening device (110)    Equalization vessel (130)    Trickling filter (160)    Wetland (170)    Sand filter (180)