Bioaugmentation is the process of adding selected microbial strains or mixed cultures to biological wastewater treatment systems to improve their performance. Specifically, the main objectives of bioaugmentation technology in a Wastewater Treatment Plant are to accelerate the degradation rate of the organic load present in wastewater, increase plant’s treatment capacity, improve process response to significant fluctuations of the incoming pollutant load, enhance process resistance to inhibition due to toxic influents, liquify and eliminate the fats, improve effluent quality and the characteristics of activated sludge (e.g. settleability, activity), eliminate the odors, reduce energy consumption and reduce excess sludge production.