Simulation of Floc Size Distribution in Flocculation of Activated Sludge Using Population Balance Model with Modified Expressions for the Aggregation and Breakage

Table 1

Four models with different expressions for the aggregation and breakage of activated sludge.

	Collision efficiency	Aggregation frequency	Breakage rate	Daughter-particles distribution	Parameters need to be calibrated
Method 1	constant	Eq. (5)	Eq. (7)	binary	, E
Method 2	constant		Eq. (7)	binomial	, E
Method 3	Eq. (4)		Eq. (7)		α0, E
Method 4	Eq. (4)		Eq. (10)		α0, E,