关键词: 厌氧消化, 泡沫, 影响因素, 表面活性剂, 丝状菌

Abstract: To deal with the problems of foam formation arising from the process of sewage treatment，this paper reviewed the influencing factors of anaerobic digestion foaming，and explained the effects of surfactant，filamentous fungus，temperature，organic loading，mixing manners and the configuration of digesters on the formation of foam in anaerobic digester. The accumulation of surfactant，excessive proliferation of filamentous bacteria，temperature fluctuations，high organic loading，poor mixing and different digester configurations，could induce anaerobic digestion foaming. In order to prevent and control the foaming in anaerobic digester，some practical measures and the future research prospects were discussed. Monitoring temperature，organic loading and mixing efficiency，reducing temperature fluctuations and the accumulation of surfactant，and keeping digesters mixed adequately，could contribute to the control of anaerobic bubble formation，improve efficiency of anaerobic digestion process and reduce cost of anaerobic processing technology. In addition，further investigation on mechanism of anaerobic digestion foaming，the interactions among the influencing factors，and research of new configuration digesters，are important theoretically and practically.

Key words: anaerobic digestion, foaming, influencing factor, surfactant, filamentous bacteria