NOVELTY - Treating animal waste and wastewater involves introducing the animal waste and wastewater to an anaerobic digester in induce to manner a substantially circumferential flow of the animal waste and wastewater in the anaerobic digester; contacting the circumferential flow of animal waste and wastewater with anaerobic micro-organisms supported on flexible members (32) and anaerobically digesting the animal waste and wastewater; collecting biogas produced by the anaerobic digestion of the animal waste and wastewater; and discharging the treated animal waste and wastewater.    USE - For treating animal waste and wastewater (claimed) produced from agricultural and industrial operations.    ADVANTAGE - The method increases biogas production, and cost effective.    DETAILED DESCRIPTION - Treating animal waste and wastewater involves introducing the animal waste and wastewater to an anaerobic digester in induce to manner a substantially circumferential flow of the animal waste and wastewater in the anaerobic digester; contacting the circumferential flow of animal waste and wastewater with anaerobic micro-organisms supported on flexible members (32) in the anaerobic digester and anaerobically digesting the animal waste and wastewater; collecting biogas produced by the anaerobic digestion of the animal waste and wastewater; discharging the treated animal waste and wastewater from the anaerobic digester; and heating the animal waste and wastewater in the anaerobic digester at 90-140 degrees F. INDEPENDENT CLAIMS are included for following:    (1) an apparatus for treating animal waste and wastewater comprising digester having an inlet anaerobic positioned in it, for introducing the animal waste and wastewater to the anaerobic digester in a manner to induce a substantially circumferential flow of the wastewater in the anaerobic digester, a support media (30) for supporting anaerobic micro-organisms in the anaerobic digester, an outlet (40) for collecting biogas from the anaerobic digester, and a discharge outlet (50) for discharging the treated animal waste and wastewater from the anaerobic digester; and    (2) a system for treating animal waste and wastewater comprising a source of animal waste and wastewater; an anaerobic digester; and a unit for transfer the animal waste and wastewater from the source of the animal waste and wastewater to the inlet of the anaerobic digester.    DESCRIPTION OF DRAWING(S) - The figures shows schematic diagram of support media for supporting anaerobic micro-organisms in the apparatus and cross-sectional view of an apparatus.    Support media (30)    Flexible members (32)    Fixed end (34)    Outlet (40)    Discharge outlet (50)