中文摘要：

为了明确溶胞过程中污泥颗粒形态结构变化,选取分维作为表征污泥颗粒形态的重要参数,考查图像法、小角度光散射法和沉降法在污泥分维测量中的应用。从图像法测得的二维分维结果发现,酸、碱处理都能使污泥分维在一定程度上增大;小角度光散射法测得的三维分维中,在pH12并辅以热处理时出现明显下降,说明此时污泥的结构变得非常疏松。对比3种分维测量方法可知,在污泥絮体分维测量中,小角度光散射法具有较好的适用性。

英文摘要：

Fractal dimension （FD） was selected as an important parameter for characterizing the change of sludge morphology. Methods measuring FD including Image, Small-Angle Light Scattering and Sedimentation were studied. Two-dimensional fractal dimension （D2） of sludge were increased to a certain degree by both acid and alkali treatment; while the three-dimensional fractal dimension （D3） of the sample pH12＋H （＋H means heating） declined according to the light scattering method, indicating the loose structure. A conclusion could be deduced after a comprehensive comparison. Method of Light Scattering has a better applicability in the sludge fractal dimension measurement.