英语翻译请翻译 The activated sludge process was developed in Englan

英语翻译
请翻译 The activated sludge process was developed in England in 1914 and was so named because it involved the production of an activated mass of microorganisms capable of aerobically stabilizing the organic content of a waste.
主要是后面 “an activated mass of microorganisms capable of aerobically stabilizing the organic content of a waste.”