NOVELTY - Oils and minerals are separated from pretreated feces by mixing pretreated feces with an acid-water solution. The resulting mixture is filtered to separate minerals from oils to yield an oil/acid-water solution with some remaining minerals. The oil from the acid-water solution is separated and the acid-water solution is distilled to yield mineral salts. The oil and residual acid-water solution are mixed with caustic solution to yield an oil/neutral-water solution, which is distilled and the oil is separated and dried.    USE - The method is used for separating oils and minerals from pre-treated feces (e.g. human, pig, cattle and fowl) to reuse and recycle various organic and inorganic chemical compounds found in feces. The resulting organic and inorganic chemical compounds, e.g. fats, fatty acids, oils, alcohols, sugars, and other minerals, are used in producing lubricants, grease, emulsifiers, biodiesel, fuels and/or fertilizers.    ADVANTAGE - The method uses a combination of unit operations that allows separation of some of the chemical groups from other chemical groups in the organic portions present in feces. It uses pressure filtration, which is efficiency, low cost, and has been used in sewerage waste treatment plants for many years to produce filtrate that is consistently less than 1% in solids and a filter cake that is greater than or equal to 25% percent solids.    DETAILED DESCRIPTION - Separation of oils and minerals from pretreated feces involves:    (A) mixing pretreated feces including viscous liquids, oils, and minerals, with an acid-water solution;    (B) filtering the resulting mixture to separate a portion of the minerals from the oils to yield an oil/acid-water solution with some remaining minerals;    (C) transferring the oil/acid-water solution to a first coalescer to separate the oil from the acid-water solution;    (D) evaporating or distilling the acid-water solution to yield mineral salts;    (E) mixing the oil and a residual acid-water solution separated in step (c) with a caustic solution to yield an oil/neutral-water solution;    (F) transferring the oil/neutral-water solution to a second coalescer to separate the oil from the neutral-water solution;    (G) evaporating or distilling the neutral-water solution to yield mineral salts;    (H) transferring the oil and a residual neutral-water solution to a third coalescer to separate the oil from the residual neutral-water solution; and    (I) drying the oil to remove any remaining water in the oil.    DESCRIPTION OF DRAWING(S) - The figure is a schematic illustration of the process and apparatus for waste treatment.    Filter (104, 108)    Filter tank (126)    Distillation unit (136)    Separation tank (148)