NOVELTY - Process comprises providing a waste stream for increased polyhydroxyalkanoate (PHA) production, introducing the waste stream into an aeration basin (106) at a location of the aeration basin, introducing a return activated sludge into the aeration basin, operating the aeration basin under operational parameters providing a famine-feast regime promoting the production of PHA by microorganisms, processing a treated waste stream from the aeration basin to separate activated sludge from an effluent, and processing a second portion to produce a stabilized PHA-laden biomass (120).    USE - The process is useful for producing polyhydroxyalkanoate during wastewater treatment (claimed).    ADVANTAGE - The process enhances the production of polyhydroxyalkanoates during wastewater treatment in desirable environmental conditions.    DETAILED DESCRIPTION - Process comprises providing a waste stream for increased PHA production, introducing the waste stream into an aeration basin (106) at a location along the length of the aeration basin, introducing a return activated sludge (RAS) into the aeration basin at a location substantially near the beginning of the aeration basin, operating the aeration basin under operational parameters providing a famine-feast regime that promotes the production of PHA by microorganisms in the aeration basin, processing a treated waste stream from the aeration basin to separate activated sludge (AS) from an effluent, where a first portion of the AS is returned to the aeration basin as the RAS, and processing a second portion of the AS to produce a stabilized PHA-laden biomass (120). An INDEPENDENT CLAIM is included for a process-I of comprising identifying a biodegradable, high carbon content waste stream having PHA precursor metabolites, where the waste stream comprises short chain fatty acids of more than 1 mM, polysaccharides of less than 6 mM, protein of less than 1 mM, and total suspended solids concentration of less than 200 mg/l, introducing the waste stream into an aeration basin at a location of one quarter to three quarters along the length of the aeration basin, introducing a return activated sludge (RAS) into the aeration basin at a location substantially near the beginning of the aeration basin, operating the aeration basin as a plug-flow reactor with the following operational parameters, an influent chemical oxygen demand loading rate of 800-3500 mg/l/day, a hydraulic retention time more than 1.5 days, and a food to microorganism ratio of 0.8-3, and transferring a treated waste stream from the aeration basin to a clarifier that separates activated sludge (AS) from an effluent, where a first portion of the AS is returned to the aeration basin as the RAS, and separating and stabilizing PHA-laden biomass from a second portion of the AS.    DESCRIPTION OF DRAWING(S) - The figure shows a flow chart of polyhydroxyalkanoate production during waste water treatment.    Pretreatment (104)    Aeration basin (106)    Solids separation (112)    Separation and stabilization. (120)