residual activated sludge 基本例句 剩余污泥 The effect of sludge residence time to residual leftover sludge output was studied.研究了污泥停留时间对剩余污泥产量的影响。 Based on the theory of hydrolysis acidification, a method to reduce excess sludge is introduced.以水解酸化理论为基础介绍了剩余污泥水解酸化的机理。