NOVELTY - The apparatus comprises a biological reactor (40) that is arranged for the biological digestion of an organic waste stream (1) to produce a converted biomass and contains a biomass for converting the feed stream into a lipid-containing biomass, an inlet conduit for feeding the organic waste stream to the biological reactor and the lipid-containing biomass into a particle size reduction member (38), an outlet conduit for removing the converted biomass from the biological reactor, and a recirculation conduit for recirculation of a portion of the converted biomass from the outlet conduit.    USE - The apparatus is useful for treating an organic waste stream such as sewage sludge, food wastes, agricultural wastes and organic municipal solid wastes.    ADVANTAGE - The apparatus is capable effectively, easily and economically treating the organic waste stream without any contamination.    DETAILED DESCRIPTION - The apparatus comprises a biological reactor (40) that is arranged for the biological digestion of an organic waste stream (1) to produce a converted biomass and contains a biomass for converting the feed stream into a lipid-containing biomass, an inlet conduit for feeding the organic waste stream to the biological reactor and the lipid-containing biomass into a particle size reduction member (38), an outlet conduit for removing the converted biomass from the biological reactor, a recirculation conduit for recirculation of a portion of the converted biomass from the outlet conduit to another particle size reduction member, a decanter associated with the outlet conduit for separating a clear decant from the converted biomass, an acid-phase anaerobic digester, a separator for separating the fractured biomass from the lipids in the effluent and the volatile fatty acid containing stream from the biomass, a conduit member for transferring the effluent from the particle size reduction member to the separator, a lipid outlet from the separator for the separated lipids, and a nutrient purge member for separating ammonia and phosphorus from the volatile fatty acid containing stream and for producing the feed stream containing the volatile fatty acids. The particle size reduction member: is associated with the inlet conduit for mechanically reducing the average particle size of the organic waste stream prior to its entry into the biological reactor; is capable of reducing the average particle size of the organic waste stream of 50% and a viscosity of the organic waste stream of 500-2500 cP by a mechanical unit while simultaneously mixing the organic waste; and comprises a housing, a circulation unit for continuously circulating the organic waste stream within the housing, an attrition unit for contacting the organic waste stream during the circulation for causing attrition and reduction of the average particle size, a first particle size reduction member, and a second particle size reduction member for conditioning the feed stream prior to the acid phase anaerobic digester. The biological reactor is increased efficiency of 50%, and comprises an aerobic or anaerobic biological reactor. The attrition unit comprises paddle members and bead members. The other particle size reduction member comprises the same particle size reduction member associated with the inlet conduit. The organic waste stream is converted into a volatile fatty acid containing stream without the production of methane. An effluent from the particle size reduction member is produced in which the biomass is fractured and the lipids are released from the biomass. INDEPENDENT CLAIMS are included for:    (1) a method for the treatment of an organic waste stream;    (2) an apparatus for the separation of lipids from a biomass;    (3) a method for separating lipids from a biomass;    (4) an apparatus for converting a feed stream containing volatile fatty acids into a lipid-containing stream; and    (5) a method for converting a feed stream containing volatile fatty acids into a lipid-containing stream.    DESCRIPTION OF DRAWING(S) - The figure shows a block flow diagram of the organic byproducts and/or waste conversion.    Organic waste streams (1)    Particle size reduction member (38)    Biological reactor (40)    Solid separation (42)    Reverse osmosis. (44)