Max weir loading for light alum floc in a solids-contact basin is:

The maximum weir loading for light aluminum floc in a solids-contact basin is typically established at 10 gallons per minute per foot (gpm/ft). This figure is critical in designing and evaluating the performance of sedimentation basins, especially in water treatment processes where flocculation is involved.

Understanding this number is essential because it helps ensure that the sedimentation process operates efficiently. If the weir loading exceeds this recommended rate, it can lead to issues such as ineffective settling of floc particles, increased turbidity in the effluent, or even resuspension of solids that should have been settled out. Therefore, adhering to this guideline supports proper operational parameters and optimizes the effectiveness of the water treatment process.