What is the typical solids loading for DAF thickening in lb TSS/hr•FT2?

The typical solids loading for Dissolved Air Flotation (DAF) thickening is generally in the range of 1-2 lb TSS/hr•FT2. This range is important because it represents an effective balance that allows for optimal performance of the DAF system in separating solids from liquids.

In DAF systems, the concentration of suspended solids being processed is crucial for efficient thickening, which involves the removal of solids from wastewater. Operating within the 1-2 lb TSS/hr•FT2 range helps ensure that the flotation process can adequately remove the solids while minimizing the risk of overloading the system, which could lead to ineffective treatment or increased operational issues.

Higher loadings can lead to insufficient contact time between the bubbles and the solids, causing a decrease in flotation efficiency. On the other hand, lower loadings may not fully utilize the capacity of the DAF system. Hence, the specified range supports effective thickening performance and achieves a good balance for treating wastewater.