Abstract: The paper introduces the characteristics of municipal sludge and the principle of aerobic sludgecomposting, and expounds the importance of conditioner in the process of composting. Secondly, the characteristics of all kinds of conditioners are clarified by summarizing the types of conditioners. Finally, theeffect of conditioner on aerobic composting of sludge was discussed. The purpose of this paper is to providetheoretical support and reasonable suggestions for the application of sludge aerobic composting conditioner.

Key words: conditioner, sludge, aerobic composting, research progress